In May 2025, the blew out the in a . At 6-33, the Rockies obtained the worst MLB record of the season and the to a season in National League history.
The struggled at an even greater historical level during the 2024 season. At the end of September, the White Sox broke the modern MLB era record for in a season.
Check out the historical rundown below:
Worst Records, MLB History
(Min. 150 Games Played; W-L, Win Pct)
1899 Cleveland Spiders: 20-134, .130
1916 Philadelphia A’s: 36-117, .235
1935 Boston Braves: 38-115, .248
2024 Chicago White Sox: 39-121, .244
1962 New York Mets: 40-120, .250
1904 Washington Senators: 38-113, .252
Most Losses in a Season, MLB History
(W-L, Win Pct)
1899 Cleveland Spiders: 134
2024 Chicago White Sox: 121
1962 New York Mets: 120
2003 Detroit Tigers: 119
1916 Philadelphia Athletics: 117
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