In May 2025, the San Diego Padres blew out the Colorado Rockies in a 21-0 rout. At 6-33, the Rockies obtained the worst MLB record of the season and the worst 39-game start to a season in National League history.
The Chicago White Sox struggled at a historical level during the 2024 season. At the end of September, the White Sox broke the modern MLB era record for most losses in a season.
Check out the historical rundown below:
Worst Records, MLB History
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