The Chicago Cubs at the moment (6-6-08)
The best record in MLB history belongs to the 1906 Chicago Cubs, who finished the season with a record of 116 wins and 36 losses.
In MLB through the 2008 season, the record for home runs by a team in one season is 264 by the 1997 Seattle Mariners.
The MLB record for doubles in a season is 67 and is held by Earl Webb of the Boston Red Sox in the 1931 season. This being 2008, that record is entering it's 77th season.
Who has the best ERA for a MLB season
2001 Seattle Mariners they went 116-46.
51
In the 2009 season, Mark Reynolds struckout 223 times which was an new MLB record. He broke the old record of 204 set by ... Mark Reynolds in 2008 season. He is the only player in MLB history to have struckout 200+ times in a season.
As of the start of the 2008 season, the MLB record for being struckout is held by Reggie Jackson with 2,597.
it is tied between the seattle mariners and the Chicago cubs.
Through the 2009 season, the record for a season is 4,483,350 by the 1993 Colorado Rockies.
Barry Bonds
The 1984 Detroit Tigers hold the best starting record in MLB history with a 35-5 record.