Pittsburgh
The Cubs franchise started play in the National League in 1876, the first season of the National League. At that time, they were known as the White Stockings.
The Twins franchise was a charter member of the American League, playing in Washington as the Senators beginning in 1901. The Senators moved to Minnesota and became the Twins for the 1961 season.
All the major league baseball teams agree on a schedule of playing among themselves, with each team playing 161 games. Anything that happens after that, the playoffs, the league championships, the World Series is all after the regular season, hence post-season.
Mark McGwire
Because it is now a franchise
According to Pro Football Reference, through the 2007 season the franchise that has lost the most games is the Arizona Cardinals who have a overall record of 464-667-39. The Cardinals are an original franchise in the NFL and have been playing since 1920. They started off in Chicago.
Their first season was the 1968-69 season. They finished 16-66 which is currently their worst record in franchise history.
the franchise was established in 1994, then began playing in the 1995 season.
71,239 in the 2009 season.
Each MLB team plays 162 games during the regular season.
The Arizona Fall League is associated with the sport of baseball. It is operated by Major League Baseball and is an off-season league which attracts some of the top minor league prospects in baseball.
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