paragraph_text: New Haven was the host of the 1995 Special Olympics World Summer Games; then-President Bill Clinton spoke at the opening ceremonies. The city is home to the Pilot Pen International tennis event, which takes place every August at the Connecticut Tennis Center, one of the largest tennis venues in the world. New Haven biannually hosts "The Game" between Yale and Harvard, the country's second-oldest college football rivalry. Numerous road races take place in New Haven, including the USA 20K Championship during the New Haven Road Race.

paragraph_text: Chesapeake Energy Arena in downtown is the principal multipurpose arena in the city which hosts concerts, NHL exhibition games, and many of the city's pro sports teams. In 2008, the Oklahoma City Thunder became the major tenant. Located nearby in Bricktown, the Chickasaw Bricktown Ballpark is the home to the city's baseball team, the Dodgers. "The Brick", as it is locally known, is considered one of the finest minor league parks in the nation.[citation needed]

paragraph_text: Fresno has three large public parks, two in the city limits and one in county land to the southwest. Woodward Park, which features the Shinzen Japanese Gardens, numerous picnic areas and several miles of trails, is in North Fresno and is adjacent to the San Joaquin River Parkway. Roeding Park, near Downtown Fresno, is home to the Fresno Chaffee Zoo, and Rotary Storyland and Playland. Kearney Park is the largest of the Fresno region's park system and is home to historic Kearney Mansion and plays host to the annual Civil War Revisited, the largest reenactment of the Civil War in the west coast of the U.S.

paragraph_text: Melbourne is notable as the host city for the 1956 Summer Olympic Games (the first Olympic Games held in the southern hemisphere and Oceania, with all previous games held in Europe and the United States), along with the 2006 Commonwealth Games. Melbourne is so far the southernmost city to host the games. The city is home to three major annual international sporting events: the Australian Open (one of the four Grand Slam tennis tournaments); the Melbourne Cup (horse racing); and the Australian Grand Prix (Formula One). Also, the Australian Masters golf tournament is held at Melbourne since 1979, having been co-sanctioned by the European Tour from 2006 to 2009. Melbourne was proclaimed the "World's Ultimate Sports City", in 2006, 2008 and 2010. The city is home to the National Sports Museum, which until 2003 was located outside the members pavilion at the Melbourne Cricket Ground. It reopened in 2008 in the Olympic Stand.

paragraph_text: The Oklahoma City Zoo and Botanical Garden is home to numerous natural habitats, WPA era architecture and landscaping, and hosts major touring concerts during the summer at its amphitheater. Oklahoma City also has two amusement parks, Frontier City theme park and White Water Bay water park. Frontier City is an 'Old West'-themed amusement park. The park also features a recreation of a western gunfight at the 'OK Corral' and many shops that line the "Western" town's main street. Frontier City also hosts a national concert circuit at its amphitheater during the summer. Oklahoma City also has a combination racetrack and casino open year-round, Remington Park, which hosts both Quarter horse (March – June) and Thoroughbred (August – December) seasons.

paragraph_text: During a 10-day run in Oklahoma City, the State Fair of Oklahoma attracts roughly one million people along with the annual Festival of the Arts. Large national pow-wows, various Latin and Asian heritage festivals, and cultural festivals such as the Juneteenth celebrations are held in Oklahoma City each year. The Tulsa State Fair attracts over one million people during its 10-day run, and the city's Mayfest festival entertained more than 375,000 people in four days during 2007. In 2006, Tulsa's Oktoberfest was named one of the top 10 in the world by USA Today and one of the top German food festivals in the nation by Bon Appetit magazine.

paragraph_text: Approximately 2,600 athletes from 82 nations participated in 86 events in fifteen disciplines. Both the Olympic and Paralympic Games were organized by the Vancouver Organizing Committee (VANOC), headed by John Furlong. The 2010 Winter Olympics were the third Olympics hosted by Canada and the first by the province of British Columbia. Canada hosted the 1976 Summer Olympics in Montreal, Quebec, and the 1988 Winter Olympics in Calgary, Alberta. Metro Vancouver is the  largest metropolitan area to host the Winter Olympics, although Calgary is the largest city to host the Winter Olympics. They will both be surpassed by Beijing in 2022.

paragraph_text: Annual summer events include the Electronic Music Festival, International Jazz Festival, the Woodward Dream Cruise, the African World Festival, the country music Hoedown, Noel Night, and Dally in the Alley. Within downtown, Campus Martius Park hosts large events, including the annual Motown Winter Blast. As the world's traditional automotive center, the city hosts the North American International Auto Show. Held since 1924, America's Thanksgiving Parade is one of the nation's largest. River Days, a five-day summer festival on the International Riverfront lead up to the Windsor–Detroit International Freedom Festival fireworks, which draw super sized-crowds ranging from hundreds of thousands to over three million people.

paragraph_text: The Budapest Marathon is an annual marathon and sport event hosted by the city of Budapest, Hungary since 1961. It is normally held at the beginning of October or the end of September. Since 1984, "Budapest Sport Iroda" (BSI) has organised the event.

paragraph_text: The 2002 Commonwealth Games were held in Manchester, England. The 2002 Games were to be hosted in England to coincide with the Golden Jubilee of Elizabeth II, head of the Commonwealth. In terms of sports and events, the 2002 Games were until the 2010 edition the largest Commonwealth Games in history featuring 281 events across 17 sports. The final medal tally was led by Australia, followed by host England and Canada. The 2002 Commonwealth Games set a new benchmark for hosting the Commonwealth Games and for cities wishing to bid for them with a heavy emphasis on legacy.

paragraph_text: Regular LPGA tournaments are held at Cedar Ridge Country Club in Tulsa, and major championships for the PGA or LPGA have been played at Southern Hills Country Club in Tulsa, Oak Tree Country Club in Oklahoma City, and Cedar Ridge Country Club in Tulsa. Rated one of the top golf courses in the nation, Southern Hills has hosted four PGA Championships, including one in 2007, and three U.S. Opens, the most recent in 2001. Rodeos are popular throughout the state, and Guymon, in the state's panhandle, hosts one of the largest in the nation.

paragraph_text: Many annual events celebrate the diverse cultures of Houston. The largest and longest running is the annual Houston Livestock Show and Rodeo, held over 20 days from early to late March, is the largest annual livestock show and rodeo in the world. Another large celebration is the annual night-time Houston Pride Parade, held at the end of June. Other annual events include the Houston Greek Festival, Art Car Parade, the Houston Auto Show, the Houston International Festival, and the Bayou City Art Festival, which is considered to be one of the top five art festivals in the United States.

paragraph_text: The Oklahoma City Oil Field is one of the world's giant petroleum fields and is located in Oklahoma City, Oklahoma in the United States of America. The field was opened just south of the city limits on December 4, 1928, and first entered Oklahoma City limits on May 27, 1930.

paragraph_text: There is a variety of annual events, beginning with the relatively new New Year's Day Parade, fireworks display at the London Eye, the world's second largest street party, the Notting Hill Carnival is held during the late August Bank Holiday each year. Traditional parades include November's Lord Mayor's Show, a centuries-old event celebrating the annual appointment of a new Lord Mayor of the City of London with a procession along the streets of the City, and June's Trooping the Colour, a formal military pageant performed by regiments of the Commonwealth and British armies to celebrate the Queen's Official Birthday.

paragraph_text: In descending order of population, Oklahoma's largest cities in 2010 were: Oklahoma City (579,999, +14.6%), Tulsa (391,906, −0.3%), Norman (110,925, +15.9%), Broken Arrow (98,850, +32.0%), Lawton (96,867, +4.4%), Edmond (81,405, +19.2%), Moore (55,081, +33.9%), Midwest City (54,371, +0.5%), Enid (49,379, +5.0%), and Stillwater (45,688, +17.0%). Of the state's ten largest cities, three are outside the metropolitan areas of Oklahoma City and Tulsa, and only Lawton has a metropolitan statistical area of its own as designated by the United States Census Bureau, though the metropolitan statistical area of Fort Smith, Arkansas extends into the state.

paragraph_text: Oklahoma City is the annual host of the Big 12 Baseball Tournament, the World Cup of Softball, and the annual NCAA Women's College World Series. The city has held the 2005 NCAA Men's Basketball First and Second round and hosted the Big 12 Men's and Women's Basketball Tournaments in 2007 and 2009. The major universities in the area – University of Oklahoma, Oklahoma City University, and Oklahoma State University – often schedule major basketball games and other sporting events at Chesapeake Energy Arena and Chickasaw Bricktown Ballpark, although most home games are played at their campus stadiums.

paragraph_text: One of the best known sporting events in the city is the Boston Marathon, the 26.2-mile (42.2 km) race which is the world's oldest annual marathon, run on Patriots' Day in April. On April 15, 2013, two explosions killed three people and injured hundreds at the marathon. Another major annual event is the Head of the Charles Regatta, held in October.

paragraph_text: The third-largest university in the state, the University of Central Oklahoma, is located just north of the city in the suburb of Edmond. Oklahoma Christian University, one of the state's private liberal arts institutions, is located just south of the Edmond border, inside the Oklahoma City limits.

paragraph_text: Washington Dickson Field is a baseball field in Stringtown, Oklahoma, United States. Built to house the Stringtown High School baseball team, the field is a part of the Oklahoma Secondary School Activities Association. The covered bleachers can seat about 132 spectators. With stadium lighting, it has the ability to host night games or events.

paragraph_text: The League of American Bicyclists gave Tucson a gold rating for bicycle friendliness in late April 2007. Tucson hosts the largest perimeter cycling event in the United States. The ride called "El Tour de Tucson" happens in November on the Saturday before Thanksgiving. El Tour de Tucson produced and promoted by Perimeter Bicycling has as many as 10,000 participants from all over the world, annually. Tucson is one of only nine cities in the U.S. to receive a gold rating or higher for cycling friendliness from the League of American Bicyclists. The city is known for its winter cycling opportunities. Both road and mountain biking are popular in and around Tucson with trail areas including Starr Pass and Fantasy Island.

Question: What is an annual event hosted by the largest city in Oklahoma?
Answer: Big 12 Baseball Tournament