The Colorado Rockies are on pace to be one of the worst teams in history during the 2025 MLB season.
The Rockies are 9-45 for a .167 winning percentage as of late May. FanGraphs currently projects Colorado to finish with a 52-110 record (.321 winning percentage) this season.
For context, the 1899 Cleveland Spiders have the title for worst regular-season record by most losses and winning percentage. They went 20-134 for a winning percentage of .130.
The Chicago White Sox set the modern record (1901-present) for losses in an MLB season, finishing 41-121 (.253) in 2024.
Worst Records in MLB History by Winning Percentage
| Team | Year | Record | Win Percentage |
|---|---|---|---|
| Cleveland Spiders | 1899 | 20-134 | .130 |
| Colorado Rockies | 2025 | 9-45 | .167 |
| Pittsburgh Alleghenys | 1890 | 23-113 | .169 |
| St. Louis Browns | 1897 | 29-102 | .221 |
| Washington Nationals | 1886 | 28-92 | .233 |
| Philadelphia Athletics | 1916 | 36-117 | .235 |
| Kansas City Cowboys | 1886 | 30-91 | .248 |
| Boston Braves | 1935 | 38-115 | .248 |
| New York Mets | 1962 | 40-120 | .250 |
| Washington Senators | 1904 | 38-113 | .252 |
| Chicago White Sox | 2024 | 41-121 | .253 |
| Philadelphia Athletics | 1919 | 36-104 | .257 |
Most Losses in a Season in MLB History
| Team | Year | Record |
|---|---|---|
| Cleveland Spiders | 1899 | 20-134 |
| Chicago White Sox | 2024 | 41-121 |
| New York Mets | 1962 | 40-120 |
| Detroit Tigers | 2003 | 43-119 |
| Philadelphia Athletics | 1916 | 36-117 |
| Boston Braves | 1935 | 38-115 |
| Baltimore Orioles | 2018 | 47-115 |
| Detroit Tigers | 2019 | 47-114 |
| Pittsburgh Alleghenys | 1890 | 23-113 |
| Washington Senators | 1904 | 38-113 |
| Pittsburgh Pirates | 1952 | 42-112 |
| Oakland Athletics | 2023 | 50-112 |
| New York Mets | 1965 | 50-112 |
Rockies Standings
Rockies 2025 Schedule
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