Seiichi Uchikawa (内川 聖一, born August 4, 1982 in Ōita, Japan) is a Japanese professional baseball player for the Fukuoka SoftBank Hawks in Japan's Nippon Professional Baseball.
 He rose to prominence in 2008 with a league-leading .378 batting average.
 He was a part of the Japanese baseball team during the 2009 World Baseball Classic, as well as the 2013 World Baseball Classic.
Miguel Lahera Betancourt (born January 24, 1985) is a Cuban baseball player for the Trois-Rivières Aigles of the Can-Am League.
 He was part of the Cuban national baseball team which won a silver medal at the 2008 Summer Olympics, and also competed for the Cuban national team in the 2008 Haarlem Baseball Week, 2009 World Port Tournament, 2009 World Baseball Classic, 2011 Pan American Games and 2017 World Baseball Classic.
Scott Robert Thorman (born January 6, 1982 in Cambridge, Ontario) is a Canadian former first baseman who is currently the manager of the Lexington Legends, the single A affiliate of the Kansas City Royals.
 Thorman was drafted in the first round, 30th overall in the 2000 Major League Baseball draft by the Atlanta Braves.
 Thorman played for Canada in the inaugural 2006 World Baseball Classic and Thorman also played in the 2009 World Baseball Classic.
The Qualifying Round of the 2017 World Baseball Classic was held from February 11 to September 25, 2016.
 Teams which participated at the 2013 World Baseball Classic were automatically qualified for the 2017 tournament except the four nations which ended up last in their respective groups: Australia, Brazil, Mexico, and Spain had to play in the qualifiers along with 12 other national teams.
 16 teams participated, divided into four groups of four teams each.
 The winners of each of the four groups qualified for the 2017 World Baseball Classic.
Chen Kun (; born 5 March 1980 in Panzhihua, Sichuan, China) is a Chinese baseball player who was a member of Team China at the 2008 Summer Olympics.
 He also played for China at the 1999 Asian Baseball Championship, 2005 Konami Cup Asia Series, 2005 Baseball World Cup, 2006 Asian Games, 2006 World Baseball Classic, 2009 World Baseball Classic, 2013 World Baseball Classic and 2017 World Baseball Classic.
Chu Fujia (; born 10 September 1989 in Jiangsu, China) is a Chinese baseball infielder for the Jiangsu Hopestars.
 He was a member of the China national baseball team competing in the 2009 World Baseball Classic, 2013 World Baseball Classic, 2012 Asia Series, 2012 Asian Baseball Championship, 2015 Asian Baseball Championship, 2013 East Asian Games, 2014 Asian Games and 2017 World Baseball Classic.
Team Israel has competed in the World Baseball Classic since the 2013 World Baseball Classic qualifier round.
 In 2017 Israel competed at a World Baseball Classic qualifier for the second time, and for the first time qualified for the main tournament.
Earl Rene Agnoly Thompson (born November 18, 1975 in Colón, Panama) is a former professional baseball player who is most notable for being on Panama's roster in the 2006 World Baseball Classic and 2009 World Baseball Classic.
 He played professionally for six years in the Florida Marlins organization and in independent baseball and later became a member of the Panama national baseball team.
Pool A of the First Round of the 2009 World Baseball Classic was held at Tokyo Dome, Tokyo, Japan from March 5 to 9, 2009.
Tokyo Dome (東京ドーム , Tōkyō Dōmu ) is a stadium in Bunkyo, Tokyo, Japan.
 Construction on the stadium began on May 16, 1985, and it opened on March 17, 1988.
 It was built on the site of the Velodrome, adjacent to the predecessor ballpark, Kōrakuen Stadium.
 It has a maximum total capacity of 55,000 depending on configuration, with an all-seating configuration of 42,000.

Question: What is the maximum total capacity of the stadium in which Pool A of the First Round of the 2009 World Baseball Classic was held at?
Answer: 55,000