<
>

What are the worst records in MLB history?

In 2024, the Chicago White Sox broke the modern major league record for most losses in a season. AP Photo/Aaron Gash

In June 2025, the Colorado Rockies claimed the fewest wins through 70 games since the 1899 Cleveland Spiders. At this juncture, Colorado (.186 win percentage) is on pace to go 30-132 this season.

The Chicago White Sox struggled at an even greater historical level throughout the full duration of 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
(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

1962 New York Mets: 40-120, .250

1904 Washington Senators: 38-113, .252

2024 Chicago White Sox: 41-121, .253

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

For more MLB coverage, check out the ESPN hub page for breaking news, rankings, recaps, stats, standings, scores, schedules, and more.