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What are the longest losing streaks in MLB history?

MLB, Chicago White Sox, Philadelphia Phillies, Baltimore Orioles

In July 2025, the Los Angeles Dodgers suffered their worst losing streak since 2017, at seven games. Though the slide was uncharacteristic of the defending World Series champions, it doesn't get close to joining the worst losing streaks in MLB history. 

The longest single-season MLB losing streak of all time was 26 games, by the 1889 Louisville Colonels. In the modern era (since 1900), the 1961 Philadelphia Phillies top the list. 

Which other teams claim the longest losing streaks in MLB history? 

23 games

1961 Philadelphia Phillies

21 games

2024 Chicago White Sox

1988 Baltimore Orioles

 

20 games

1969 Montreal Expos 

1943 Philadelphia Athletics 

1916 Philadelphia Athletics 

1906 Boston Americans 

19 games

2021 Baltimore Orioles

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