For pitchers, that is Alexander Spaulding who pitched between 1871-1877 for the Boston Red Stockings of the National Association and the Chicago White Stockings of the National League and had a won-loss record of 253-65 for a winning percentage of .796.
For pitchers that played after 1900, that is Spud Chandler who pitched for the New York Yankees between 1937-1947 and had a won-loss record of 109-43 for a winning percentage of .717.
For teams, through games played on April 15, 2009, that is the New York Yankees with a won-loss record of 9,476-7,239 for a winning percentage of .567.
51
Through the 2009 season, the record for a season is 4,483,350 by the 1993 Colorado Rockies.
1 and a lot
The Cincinnati Reds have the highest winning percentage against them. The Reds are 5-4 all time against the Yankees.
The Chicago White Sox, after the 2006 interleague play. Oakland had it going into this year.
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.
The 1984 Detroit Tigers hold the best starting record in MLB history with a 35-5 record.
Nationals
orioles 196-123
Chicago Cubs
The Chicago Cubs at the moment (6-6-08)
They're not. In fact, they finished 2010 with a 97-65 record. That was the best record in the MLB.
the angels
2001 Seattle Mariners they went 116-46.
Kenny Lofton
The Chicago Cubs at the moment (6-6-08)
2001 Seattle Mariners they went 116-46.