document_title: St. Pete–Clearwater International Airport

question_text: who flies out of clearwater st pete airport

text: History[edit]

text: The airport is on the west shoreline of Tampa Bay, six miles (10 km) north of St. Petersburg, Florida (the "birthplace of commercial air transportation"). Barely a decade after the pioneer flight of the Wright brothers at Kitty Hawk in 1903, the first tickets for airline travel were sold by the St. Petersburg-Tampa Airboat Line of Tony Jannus to fare-paying passengers. Using a Benoist XIV amphibious aircraft, the inaugural flight took place from a location near the downtown St. Petersburg Pier.[6] Mayor Abram C. Pheil of St. Petersburg and Mae Peabody of Dubuque, Iowa, were the first passengers, flying across the bay to Tampa and, according to a United Press account, reportedly reaching the maximum speed of 75 miles per hour during the flight. Other reports indicate that they reached an altitude of 50 feet (15 m).

text: This was the beginning of commercial air transportation anywhere in the world and is commemorated by a replica of the Benoist aircraft and a plaque at the airport terminal baggage claim area. Another replica is displayed at the St. Petersburg Museum of History adjacent to the Pier. Since 1991, the terminal holds the archives of the Florida Aviation Historical Society.[7]

text: Construction and wartime[edit]

text: Construction of the airport at its present site started in March 1941. After the attack on Pearl Harbor, the airport was acquired by the United States Army Air Forces, which used it as a military flight training base assigned to Third Air Force.

text: The 304th Fighter Squadron, a combat training unit of the 337th Fighter Group based P-40 Warhawks and, later, P-51 Mustangs at Pinellas Army Airfield (as it was then known) for the duration of World War II. Antisubmarine patrols against German U-boats in the Gulf of Mexico were also flown from the airfield.

text: To commemorate the airport's vital role during that conflict, a plaque was dedicated at the airport terminal in 1994 by the P-51 Fighter Pilots Association and Brigadier General James H. Howard, who was the only European Theater fighter pilot to be awarded the Medal of Honor in World War II and later served as the last wartime base commander of Pinellas Army Airfield. A permanent exhibit honoring General Howard is located in the terminal.

text: Postwar operation[edit]

text: After World War II the property was returned to Pinellas County by the U.S. government to operate as a civil airport. It was originally called Pinellas International Airport and given the IATA designation, PIE, which it still uses, because PIA was already taken by Peoria International Airport.[8] It was later changed to St. Petersburg–Clearwater International Airport because, according to airport manager "Bobo" Hayes, tourists didn't know where Pinellas county was.[7]

text: In the 1950s some airlines flew to both PIE and TPA, such as Delta Air Lines, Eastern Air Lines, National Airlines and Northwest Airlines. The April 1957 Official Airline Guide (OAG) shows 17 airline departures: ten Eastern, six National and one Mackey. Four of those flights were nonstop beyond Florida, including an Eastern DC-4 to Chicago and a 1049G to Pittsburgh.

text: With the advent of the jet age runway 17/35 was extended north into Tampa Bay; the first scheduled jet was a Northwest Airlines Boeing 720B from Chicago in late 1961. (The 1961 Aviation Week directory says PIE's longest runways were 5700 ft, but probably 17/35 was 8000 ft when the 720B arrived.) The increased capacity of the Boeing 707 and Douglas DC-8, compared to the DC-6 and DC-7, prompted the Civil Aeronautics Board to approve consolidation of airline service for the Tampa Bay area at TPA in the early 1960s.

text: During the early 1960s, Eastern was the last scheduled airline serving PIE and it ceased all flights from the airport in 1964.

text: Airline service returned to PIE in the 1970s when Air Florida flew Boeing 707 jets followed by Lockheed L-188 Electra turboprops out of PIE; in 1982, Northeastern International started Douglas DC-8 jet nonstops to Islip, New York, and in 1983 People Express started nonstops to Newark with Boeing 737s and Boeing 727s. In 1986 Florida Express flew British Aircraft Corporation BAC One-Eleven jets nonstop to its hub in Orlando.[9] In 1987 American Airlines started nonstops to its Raleigh-Durham hub, but by October 1989 PIE once again did not have scheduled airline service.

text: American Trans Air and Air South then began flights in the mid 1990s but both ended operations at PIE in 2004, ATA downsizing due to bankruptcy and Southeast going defunct. The airport was once again left without scheduled passenger flights.

text: Recent developments[edit]

text: In September 2006 Allegiant Air announced scheduled service from St. Petersburg–Clearwater to cities in Iowa, Illinois, Indiana, Michigan, Missouri, New York, Ohio, Pennsylvania, South Carolina, Tennessee, and Virginia. Allegiant's destination count from PIE has increased to 59 airports in the eastern United States. In February, the Lansing, Michigan service shifted to Grand Rapids, Michigan, with four weekly flights.

text: The airport recently completed a US$22 million renovation, including, among other things, larger gates, new plumbing, and building jetway loading bridges as previous boarding and deplaning required all passengers to walk across the tarmac to their gates.[10]

text: In January 2015 Silver Airways announced it was beginning service to PIE, but in March the company had cancelled its plans.[11]

text: Facilities[edit]

text: The airport covers 1900 acres (769 ha) at an elevation of 11 feet (3 m). It has two asphalt runways: 18/36 is 9,730 by 150 feet (2,966 x 46 m) with an ILS approach, and 4/22 is 5,903 by 150 feet (1,799 x 46 m).[1]

text: The airport is also the home of Coast Guard Air Station Clearwater, the largest and busiest U.S. Coast Guard Air Station in the United States, operating HC-130 Hercules and MH-60T Jayhawk aircraft. The U.S. Army Reserve also maintains an Army Aviation Support Facility (AASF) at PIE immediately west of the approach end of Runway 17R for Companies A and F, 5th Battalion, 159th Aviation Regiment and Medical Evacuation Unit, operating UH-60 Blackhawk helicopters.

text: U.S. Customs and Border Protection, the Federal Aviation Administration (FAA)-operated control tower, the FAA's Central Florida Region Automated Flight Service Station (AFSS) (which is the busiest AFSS in the United States) and the St. Petersburg VORTAC for airways navigation are also important federal government services at the airport.

text: Along with scheduled passenger and charter airlines as well as military flight operations, United Parcel Service (UPS Airlines) along with other air cargo operators and general/corporate aviation utilize the airport with UPS conducting extensive Boeing 757-200 freighter operations. The entire tract of the airport is designated as a Foreign Trade Zone (FTZ) and a large Airport Industrial Park developed in the 1980s is a major center of commerce. The airport and its tenants employ over 3,000 people and have an economic benefit of more than $400 million yearly to the Tampa Bay area.

text: The airport has a 24-hour airport rescue and fire-fighting (ARFF) department (Index C), along with operations, facilities, engineering, security, and administrative personnel.

text: For the year ending June 30, 2017, the airport had 113,096 aircraft operations, an average of 310 operations per day; with 71% general aviation, 13% military, 12% commercial and 3% air taxi. In November 2017, there were 259 aircraft based at this airport: 98 single-engine, 29 multi-engine, 56 jet, 39 helicopter, 36 military and 1 ultralight.[1]

text: Airlines and destinations[edit]

text: St. Petersburg–Clearwater International Airport has one terminal and thirteen gates: 1–12 and 14.

text: Passenger[edit]

text:
Airlines
Destinations

Allegiant Air
Allentown, Appleton, Asheville, Austin, Bangor, Belleville/St. Louis, Bloomington/Normal, Cedar Rapids, Chattanooga, Chicago/Rockford, Cincinnati, Columbus–Rickenbacker, Charlotte/Concord, Cleveland, Dayton, Des Moines, Elmira, Flint, Fort Wayne, Grand Rapids, Greensboro, Greenville/Spartanburg, Harrisburg, Huntington (WV), Indianapolis, Kansas City, Knoxville, Lexington, Louisville, Memphis, Milwaukee,[12] New Orleans, Newburgh, Niagara Falls, Norfolk, Ogdensburg (NY),[13] Omaha, Peoria, Pittsburgh, Plattsburgh, Providence,[14] Raleigh/Durham, Roanoke, Sioux Falls, South Bend, Springfield/Branson, Syracuse, Toledo
Seasonal: Fargo, Hagerstown (MD), Moline/Quad Cities, Phoenix/Mesa,[12] Portsmouth (NH), Richmond, Tulsa

Sun Country Airlines
Charter: Gulfport/Biloxi

Sunwing Airlines
Seasonal: Halifax, Toronto–Pearson

text: Statistics[edit]

text: Airline market share[edit]

text:
Carrier shares for (Dec 2016 – Nov 2017)[15]

Carrier
Passengers (arriving and departing)

Allegiant

1,985,000(100%)

text: Top domestic destinations[edit]

text:
Top domestic destinations (December 2016 – November 2017)[15]

Rank
City
Passengers
Carriers

1
Cincinnati, Ohio
50,520
Allegiant

2
Indianapolis, Indiana
35,360
Allegiant

3
Grand Rapids, Michigan
33,300
Allegiant

4
Knoxville, Tennessee
31,840
Allegiant

5
Asheville, North Carolina
28,610
Allegiant

6
Pittsburgh, Pennsylvania
25,330
Allegiant

7
Columbus–Rickenbacker, Ohio
24,400
Allegiant

8
Charlotte–Concord, North Carolina
24,070
Allegiant

9
Lexington, Kentucky
23,160
Allegiant

10
Huntington, West Virginia
22,980
Allegiant

text: Annual traffic[edit]

text:
Annual passenger traffic (enplaned + deplaned) at St Pete-Clearwater Airport, 1992 thru 2016[16]

Year
Passengers
Year
Passengers
Year
Passengers

2010
776,087
2000
734,940

2009
776,535
1999
791,973

2008
742,380
1998
911,195

2017
2,055,269
2007
747,369
1997
883,086

2016
1,837,035
2006
389,997
1996
1,045,928

2015
1,645,402
2005
596,510
1995
1,086,051

2014
1,247,987
2004
1,333,069
1994
721,977

2013
1,017,049
2003
997,761
1993
561,322

2012
865,942
2002
623,959
1992
397,940

2011
833,068
2001
637,310

text: Accidents and incidents[edit]

text: On June 6, 1982, a Douglas C-47A (N95C), of Fromhagen Aviation, was written off after the starboard engine failed during the takeoff for a training flight. All five people aboard survived.[17]

text: On September 30, 2015, the pilot of a Piper PA-30, registered to Jet Aircraft Management, crashed and died while practicing takeoffs and landings.[18][19]

text: On June 1, 2016, Allegiant Air flight 871 made an emergency landing at the airport, its scheduled destination. The plane departed from Moline, Illinois. No injuries were reported, and the airline declined to comment on the mechanical failure.[20]


document_title: Three-point field goal

question_text: when did 3 point line start in high school

root

text: Three-point field goal

text: History[edit]

text: The three-point line was first tested at the collegiate level in a 1945 NCAA game between Columbia and Fordham but it was not kept as a rule. At the direction of Abe Saperstein, the American Basketball League became the first basketball league to institute the rule in 1961. Its three-point line was a radius of 25 feet (7.62 m) from the baskets, except along the sides.[2] The Eastern Professional Basketball League followed in its 1963–64 season.

tag: p

text: The three-point shot later became popularized by the American Basketball Association after its introduction in the 1967–68 season. ABA commissioner George Mikan stated the three-pointer "would give the smaller player a chance to score and open up the defense to make the game more enjoyable for the fans."[3] During the 1970s, the ABA used the three-point shot, along with the slam dunk, as a marketing tool to compete with the National Basketball Association (NBA).

text: In the 1979–80 season, after having tested it in the previous pre-season, the NBA adopted the three-point line despite the view of many that it was a gimmick.[4] Chris Ford of the Boston Celtics is widely credited with making the first three-point shot in NBA history on October 12, 1979. Kevin Grevey of the Washington Bullets also made one on the same day.

text: The sport's international governing body, FIBA, introduced the three-point line in 1984, at a distance of 6.25 m (20 ft 6 in).

text: The NCAA's Southern Conference became the first collegiate conference to use the three-point rule, adopting a 22-foot (6.71 m) line for the 1980–81 season.[5][6] Ronnie Carr of Western Carolina University was the first to score a three-point field goal in college basketball history on November 29, 1980.[6][7][8] Over the following five years, NCAA conferences differed in their use of the rule and distance required for a three-pointer. The line was as close as 17 ft 9 in (5.41 m) in the Atlantic Coast Conference, and as far away as 22 feet in the Big Sky Conference.[9] Used in conference play, it was adopted by the NCAA for the 1986–87 men's season at 19 ft 9 in (6.02 m), and was first used in the NCAA Tournament in 1987.[10] In the same 1986–87 season, the NCAA adopted the three-pointer in women's basketball on an experimental basis, using the same 19 ft 9 in distance, and made its use mandatory beginning in 1987–88.[11] In 2007, the NCAA lengthened the men's three-point distance to 20 ft 9 in (6.32 m), with the rule coming into effect at the beginning of the 2008–09 season.[12] The NCAA women's three-point distance was moved to match the men's distance in 2011–12.[11] American high schools, along with elementary and middle schools, adopted a 19 ft 9 in (6.02 m) line nationally in 1987, a year after the NCAA.[13] The NCAA used the FIBA three-point line (see below) in the 2018 National Invitation Tournament.[14]

text: During the 1994–95, 1995–96, and 1996–97 seasons, the NBA attempted to address decreased scoring by shortening the distance of the line from 23 ft 9 in (7.24 m) (22 ft (6.71 m) at the corners) to a uniform 22 ft (6.71 m) around the basket. From the 1997–98 season on, the NBA reverted the line to its original distance of 23 ft 9 in (22 ft at the corners, with a 3 inch differential). Ray Allen is currently the NBA all-time leader in career made three-pointers with 2,973.[15]

text: In 2008, FIBA announced that the distance would be increased by 50 cm (19.69 in) to 6.75 m (22 ft 1 3⁄4 in), with the change being phased in beginning in October 2010. In December 2012, the WNBA announced that it would be using FIBA's distance, too, as of the 2013 season. The NBA has discussed adding a four-point line, according to president Rod Thorn.[16]

text: In the NBA, three-point field goals have become increasingly more frequent along the years, with effectiveness increasing slightly. The 1979-80 season had an average 2.2 three-point goals per game and 6.6 attempts (28% effectiveness). The 1989-90 season had an average 4.8 three-point goals per game and 13.7 attempts (35% effectiveness). The 2009-10 season had an average 6.4 three-point goals per game and 18.1 attempts (36% effectiveness). The 2016-17 season had an average 9.7 three-point goals per game and 27.0 attempts (36% effectiveness).[17]

text: Rule specifications[edit]

text: A three-point line consists of an arc at a set radius measured from the point on the floor directly below the center of the basket, and two parallel lines equidistant from each sideline extending from the nearest end line to the point at which they intersect the arc. In the NBA and FIBA standard, the arc spans the width of the court until it is a specified minimum distance from each sideline. The three-point line then becomes parallel to the sidelines from those points to the baseline. The unusual formation of the three-point line at these levels allows players some space from which to attempt a three-point shot at the corners of the court; the arc would be less than 2 feet (0.61 m) from each sideline at the corners if it was a continuous arc. In the NCAA and American high school standards, the arc spans 180° around the basket, then becomes parallel to the sidelines from the plane of the basket center to the baseline (5 feet 3 inches or 1.60 metres). The distance of the three-point line to the center of the hoop varies by level:

text:
Arc radius
Minimum distance from sidelines

National Basketball Association
23 feet 9 inches (7.24 m)
3 feet (0.91 m)
[18]

FIBA (also used by WNBA)
6.75 meters (22 ft 2 in)
0.90 meters (2 ft 11 in)
[19]

National Collegiate Athletic Association
20 feet 9 inches (6.32 m)
4 feet 3 inches (1.30 m)
[20]

American high school basketball
19 feet 9 inches (6.02 m)
5 feet 3 inches (1.60 m)
[21]

tag: table

text: A player's feet must be completely behind the three-point line at the time of the shot or jump in order to make a three-point attempt; if the player's feet are on or in front of the line, it is a two-point attempt. A player is allowed to jump from outside the line and land inside the line to make a three-point attempt, as long as the ball is released in mid-air.

text: An official raises his/her arm with three fingers extended to signal the shot attempt. If the attempt is successful, he/she raises his/her other arm with all fingers fully extended in manner similar to a football official signifying successful field goal to indicate the three-point goal. The official must recognize it for it to count as three points. Instant replay has sometimes been used, depending on league rules. The NBA,[22] WNBA, FIBA and the NCAA specifically allow replay for this purpose. In NBA, FIBA, and WNBA games, video replay does not have to occur immediately following a shot; play can continue and the officials can adjust the scoring later in the game, after reviewing the video. However, in late game situations, play may be paused pending a review.

text: If a shooter is fouled while attempting a three-pointer and subsequently misses the shot, the shooter is awarded three free-throw attempts. If a player completes a three-pointer while being fouled, the player is awarded one free-throw for a possible 4-point play. Conceivably, if a player completed a three-pointer while being fouled, and that foul was ruled as either a Flagrant 1 or a Flagrant 2 foul, the player would be awarded two free throws for a possible 5-point play.

text: Related concepts[edit]

text: Major League Lacrosse features a two-point line which forms a 15-yard (14 m) arc around the front of the goal. Shots taken from behind this line count for two points, as opposed to the standard one point.

text: In gridiron football, a standard field goal is worth three points; various professional and semi-pro leagues have experimented with four-point field goals. NFL Europe and the Stars Football League adopted a rule similar to basketball's three-point line in which an additional point was awarded for longer field goals; in both leagues any field goal of 50 yards (46 m) or more was worth four points. The Arena Football League awards four points for any successful drop kicked field goal (like the three-point shot, the drop kick is more challenging than a standard place kick, as the bounce of the ball makes a kick less predictable, and arena football also uses narrower goal posts for all kicks than the outdoor game does).

text: During the existence of the World Hockey Association in the 1970s, there were proposals for two-point hockey goals for shots taken beyond an established distance (one proposal was a 44-foot (13.4m) arc, which would have intersected the faceoff circles), but this proposal gained little support and faded after the WHA merged with the NHL. It was widely believed that long-distance shots in hockey had little direct relation to skill (usually resulting more from goalies' vision being screened or obscured), plus with the lower scoring intrinsic to the sport a two-point goal was seen as disruptive of the structure of the game.

text: The Super Goal is a similar concept in Australian rules football, in which a 50-meter (55 yd) arc determines the value of a goal; within the arc, it is the usual 6 points, but 9 points are scored for a "super goal" scored from outside the arc. To date the super goal is only used in pre-season games and not in the season proper.[23]

text: The National Professional Soccer League II, which awarded two points for all goals except those on the power play, also used a three-point line, drawn 45 feet (14 m) from the goal. It has since been adopted by some other indoor soccer leagues.


document_title: Tennis court

question_text: what are the tennis courts at wimbledon made from

text: Tennis court

text: Dimensions[edit]

text: Tennis is played on a rectangular flat surface, usually of grass, clay or hard material. The dimensions of a tennis court are defined and regulated by the International Tennis Federation (ITF) governing body and are written down in the annual 'Rules of Tennis' document.[1] The court is 78 feet (23.77 metres) long. Its width is 27 feet (8.23 metres) for singles matches and 36 feet (10.97 metres) for doubles matches.[2] The service line is 21 feet (6.40 metres) from the net.[2] Additional clear space around the court is needed in order for players to reach overrun balls for a total of 60 feet (18 metres) wide and 120 feet (37 metres) long. A net is stretched across the full width of the court, parallel with the baselines, dividing it into two equal ends. The net is 3 feet 6 inches (1.07 metres) high at the posts, and 3 feet (0.91 metres) high in the center.[3] The net posts are 3 feet (0.91 metres) outside the doubles court on each side or, for a singles net, 3 feet (0.91 metres) outside the singles court on each side.

text: Surfaces[edit]

text: Tennis is played on a variety of surfaces and each surface has its own characteristics which affect the playing style of the game. There are four main types of courts depending on the materials used for the court surface: clay courts, hard courts, grass courts and carpet courts. The International Tennis Federation (ITF) lists different surfaces and properties and classifies surfaces into one of five pace settings:[4]

text:
Category 1 (slow)
Category 2 (medium-slow)
Category 3 (medium)
Category 4 (medium-fast)
Category 5 (fast)

tag: ul

text: Of the current four Grand Slam tournaments, the Australian and US Open use hard courts, French Open is played on clay, and Wimbledon, the only Grand Slam to have always been played on the same surface, is played on grass. The Australian Open switched to hard courts in 1988 and in its early years the French championship alternated between clay and sand/rubble courts. The US Open is the only major to have been played on three surfaces; it was played on grass from its inception until 1974, clay from 1975 until 1977 and hard courts since it moved from the West Side Tennis Club to the National Tennis Center in 1978.

text: ITF uses the following classification for tennis court surface types:[5]

text:
Surface code
Type
Description

A
Acrylic
Textured, pigmented, resin-bound coating

B
Artificial clay
Synthetic surface with the appearance of clay

C
Artificial grass
Synthetic surface with the appearance of natural grass

D
Asphalt
Bitumen-bound aggregate

E
Carpet
Textile or polymeric material supplied in rolls or sheets of finished product

F
Clay
Unbound mineral aggregate

G
Concrete
Cement-bound aggregate

H
Grass
Natural grass grown from seed

J
Other
E.g. modular systems (tiles), wood, canvas

text: Clay courts[edit]

text: Clay courts are made of crushed shale, stone or brick.[6] The French Open is the only Grand Slam tournament to use clay courts.

text: Clay courts slow down the ball and produce a high bounce in comparison to grass or hard courts.[6] For this reason, the clay court takes away many of the advantages of big serves, which makes it hard for serve-based players to dominate on the surface. Clay courts are cheaper to construct than other types of tennis courts, but a clay surface costs more to maintain. Clay courts need to be rolled to preserve flatness. The clay's water content must be balanced; green clay courts generally require the courts to be sloped to allow water run-off.

text: Clay courts are more common in Europe and Latin America than in North America, and tend to heavily favour baseline players.

text: Grass courts[edit]

text: Grass courts are the fastest type of courts in common use.[6] They consist of grass grown on very hard-packed soil, which adds additional variables: bounces depend on how healthy the grass is, how recent it has been mowed, and the wear and tear of recent play. Points are usually very quick where fast, low bounces keep rallies short, and the serve plays a more important role than on other surfaces. Grass courts tend to favour serve-and-volley tennis players.

text: Grass courts were once among the most common tennis surfaces, but are now rare due to high maintenance costs as they must be watered and mown often, and take a longer time to dry after rain than hard courts. The grass surface, however, is the most physically forgiving to the human body because of its softness.

text: Hard courts[edit]

text: Hard courts are made of uniform rigid material, often covered with an acrylic surface layer[6] to offer greater consistency of bounce than other outdoor surfaces.[7] Hard courts can vary in speed, though they are faster than clay but not as fast as grass courts. The quantity of sand added to the paint can greatly affect the rate at which the ball slows down.[8]

text: The US Open is played on DecoTurf while the Australian Open is played on Plexicushion, both acrylic-topped hard court surfaces.

text: Carpet courts[edit]

text: "Carpet" in tennis means any removable court covering.[6] Indoor arenas store rolls of rubber-backed court surfacing and install it temporarily for tennis events, but they are not in use anymore for professional events. A short piled form of artificial turf infilled with sand is used for some outdoor courts, particularly in Asia. Carpet is generally a fast surface, faster than hardcourt, with low bounce.[6]

text: Notable tennis tournaments previously held on carpet courts were the WCT Finals, Paris Masters, U.S. Pro Indoor and Kremlin Cup. Since 2009, their use has been discontinued on both the ATP and WTA tours.

text: Indoor courts[edit]

text: Any court surface may be used indoors. Hard courts[7] are most common indoors, as they are made with the most versatile materials and surface finishes. Clay courts are installed indoors with underground watering systems, and used mostly for Davis Cup matches. The conclusion of the Wimbledon Championships, in 2012, was played on the lawn of Centre Court under the roof and artificial lights. Carpet surfaces have been used both on the ATP World Tour and World Championship Tennis circuit, though no events currently use them. Historically, other surfaces have been used indoors such as hardwood at the defunct World Covered Court Championships and London Indoor Professional Championships. Currently, the ATP World Tour Finals event is the most important indoor tennis tournament.

text: Smaller courts[edit]

text: The ITF campaign Play and Stay aims to increase tennis participation worldwide by improving the way children are introduced to the game. The campaign promotes playing on smaller courts with slower red, orange and green balls. This gives children more time and control so they can serve, rally, and score from the first lesson on courts that are sized to fit their bodies. The ITF has mandated that official competition for children under 10 years of age should be played on so-called "Orange" courts 18 m (59 ft) long by 6.4 m (21 ft) wide. Competition for children under 8 years is played on "Red" courts that are 11 m (36 ft) long and 5.5 m (18 ft) wide. The net is always 0.8 m high in the center.[9]

text: Terminology[edit]

text: Common tennis court terms:

text:
Advantage service box or ad court: The receiver's left side service box, or the opponent's right for the server; significant as the receiving side for an advantage point.
Alley or Tramlines:[10] The lanes on each side of the singles court. These are only used when playing doubles.
Back court: The area between the baseline and the service line.
Baseline: The rearmost line of the court, furthest from and parallel to the net.
Center service line: The line dividing the two service boxes on each side.
Center mark: The 12-inch mark at the halfway point of the baseline used to distinguish the two halves (and service boxes) of a tennis court.
Deuce service box or deuce court: The receiver's right side service box, or the opponent's left for the server, significant as the receiving side for a deuce point.
Service box: The area on each side bounded by the singles sideline, the service line, and the net. There are left and right service boxes, separated by the center service line.
Service line: The line that is parallel to the net and is located between the baseline and the net. It marks the end of the service boxes.
Side T: The T shape formed by the service line and the singles sideline. There are four such side Ts, two on each side of the net.
T or Middle T: The T shape formed by the service line and the center service line.