The Athletics (often referred to as the A's) are an American professional baseball team based in West Sacramento, California. The Athletics compete in Major League Baseball (MLB) as a member club of the American League (AL) West Division. The team will play its home games at Sutter Health Park in West Sacramento for the 2025–2027 seasons before its planned relocation to the Las Vegas metropolitan area. While in West Sacramento, the team is being referred to as simply the "Athletics" and "A's", with no city name attached. The franchise's nine World Series championships, fifteen pennants, and seventeen division titles are the second most in the AL after the New York Yankees. One of the AL's eight charter franchises, the team was founded in Philadelphia in 1901 as the Philadelphia Athletics. They won three World Series championships in 1910, 1911, and 1913, and back-to-back titles in 1929 and 1930. The team's owner and manager for its first 50 years was Connie Mack, and Hall of Fame players included Chief Bender, Frank "Home Run" Baker, Jimmie Foxx, and Lefty Grove. The team left Philadelphia for Kansas City, Missouri, in 1955 and became the Kansas City Athletics, before moving to Oakland, California, in 1968 and becoming the Oakland Athletics. The Athletics played their home games at the Oakland Coliseum from 1968 until 2024. Nicknamed the "Swingin' A's", under owner Charlie O. Finley they won three consecutive World Series in 1972, 1973, and 1974, led by players including Vida Blue, Catfish Hunter, Reggie Jackson, and Rollie Fingers. After being sold by Finley to Walter A. Haas Jr., the team won three consecutive pennants and the 1989 World Series behind the "Bash Brothers", Jose Canseco and Mark McGwire, as well as Hall of Famers Dennis Eckersley, Rickey Henderson and manager Tony La Russa. In 2002, the Athletics set a then American League record for most consecutive wins in a season with twenty, an event that would go on to be the pioneering step in the application of sabermetrics in baseball. The streak record was later broken in 2017 by the Cleveland Indians. From 1901 through the end of 2024, the franchise's overall win–loss record is 9,329–9,859–87 (.486).

Sutter Health Park

The Toronto Blue Jays are a Canadian professional baseball team based in Toronto, Ontario. The Blue Jays are a member of the East division of the American League (AL) in Major League Baseball (MLB), and play their home games at Rogers Centre. The "Blue Jays" name originates from the bird of the same name, and blue is also the traditional colour of two of Toronto's other professional sports teams: the Maple Leafs (ice hockey) and the Argonauts (Canadian football). In addition, the team was originally owned by the Labatt Brewing Company, makers of the popular beer Labatt's Blue. Colloquially nicknamed the "Jays", the team's official colours are royal blue, navy blue, red, and white. An expansion franchise, the club was founded in Toronto in 1977. Originally based at Exhibition Stadium, the team began playing its home games at the SkyDome, upon its opening in 1989. Since 2000, the Blue Jays have been owned by Rogers Communications and in 2004, the SkyDome was purchased by that company, which it renamed Rogers Centre. They are the second MLB franchise to be based outside the United States, and currently the only team based outside the U.S. after the first Canadian franchise, the Montreal Expos, relocated to Washington, D.C. after the 2004 season and became the Washington Nationals. In the late 1970s and early 1980s, the Blue Jays went through struggles typical of an expansion team, frequently finishing in last place in its division. In 1983, the team had its first winning season and two years later, they became division champions. From 1985–1993, they were an AL East powerhouse, winning five division championships in nine seasons, including three consecutive from 1991–93. During that run, the team also became back-to-back World Series champions in 1992 and 1993, led by a core group of award-winning All-Star players, including Hall of Famer Roberto Alomar, Joe Carter, John Olerud, and Devon White. The Blue Jays became the first (and, to date, only) team outside the U.S. to appear in and win a World Series, and the fastest AL expansion team to do so, winning in its 16th year. After 1993, the Blue Jays failed to qualify for the playoffs for 21 consecutive seasons, until clinching a playoff berth and division championship in 2015. The Blue Jays are one of three MLB teams under corporate ownership, with the other two being the Seattle Mariners (Nintendo of America) and the Atlanta Braves (Liberty Media). The Blue Jays played their first game on April 7, 1977 against the Chicago White Sox before a home crowd of 44,649. The game is now perhaps best remembered for the minor snowstorm which began just before the game started. Toronto won the snowy affair 9–5, led by Doug Ault's two home runs. That win would be one of only 54 of the 1977 season, as the Blue Jays finished last in the AL East, with a record of 54–107. After the season, assistant general manager Pat Gillick succeeded Peter Bavasi as general manager of the team, a position he would hold until 1994. In 1978, the team improved their record by five games, but remained last, with a record of 59–102. In 1979, after a 53–109 last place finish, shortstop Alfredo Griffin was named American League co-Rookie of the Year. In addition, the Blue Jays' first mascot, BJ Birdy, made its debut in 1979. In 1980, Bobby Mattick became manager, succeeding Roy Hartsfield, the Blue Jays' original manager. In Mattick's first season as manager, although they remained at the bottom, Toronto almost reached the 70-win mark, finishing with a record of 67–95, a 14-win improvement on 1979. Jim Clancy led with 13 wins and John Mayberry became the first Jay to hit 30 home runs in a season. In the strike-divided season of 1981, the Blue Jays finished in last place in the AL East in both halves of the season. They were a dismal 16–42 in the first half, but improved dramatically, finishing the 48-game second half at 21–27, for a combined record of 37–69.