Which pitcher holds the record for most losses in one season?
Righthander John Coleman lost 48 games for Philadelphia in 1883, which was the final season that a pitcher had to release the ball at a point below the hip ... basically underhanded.
That would be John Coleman of the 1883 Philadelphia Quakers who lost 48 games (w/l record was 12-48). Since 1900, the most losses in a season by a pitcher is 29 by Hall of Famer Vic Willis of the Boston Braves in 1905 (w/l record was 12-29). Since 1950, the most losses in a season by a pitcher is 24 by Roger Craig of the 1962 New York Mets (w/l record was 10-24) and Jack…
The 1899 Cleveland Spiders lost 134 games to hold the all time record. In terms of total losses, the 1899 Cleveland Spiders of the National League posted a record of 20 wins and 134 losses. In the 162 game season era, the record goes to the 2003 Detroit Tigers, who posted a record of 43 wins and 119 losses.