As of the start of the 2008 season, the Philadelphia Philles have lost the most games in MLB history. Their franchise record is 8853-10028 for a winning percentage of .469. The team with the worst franchise winning percentage is the Tampa Bay Rays who have a record of 645-972 for a winning percentage of .399.
The Pittsburgh Pirates, with 20 losing seasons. They broke their own previous record of 19 consecutive losing seasons. :-(
The Baltimore Orioles?
The Pittsburgh Pirates
Yes, a major league baseball team has been forced to forfeit a game when it is losing badly. There have also been teams that have been forced to forfeit due to a crowd that was too rowdy.
The 1997 Seattle Mariners hold the MLB single season record for home runs with 264.
The Phillies lost 23 games in a row in 1961.
The chicago cubs
In the AA League in 1887, Philadelphia had 638 The NL record is held by the 1893 Giants with 426 Since 1900, the Major League record is 347 by the 1911 Giants The AL record is held by the 1976 Oakland A's with 341