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Connie Mack, Bash Brothers and 20 straight wins: Looking back on best A’s seasons

There are plenty of great teams to choose from in a historic Athletics franchise that has seen nine World Series titles. Some of the greatest squads, however, came up short of a championship despite dominant regular seasons and star-studded rosters.…

Published: Friday, 30 October 2026 at 3:50 AM
Connie Mack, Bash Brothers and 20 straight wins: Looking back on best A’s seasons
Key Things to Know
  • MLB.com ranked the top five greatest seasons in Athletics franchise history.
  • The 1931 team holds the franchise record with 107 regular-season victories.
  • The 1989 Athletics swept the Giants in the World Series following an earthquake delay.
The Story in 60 Seconds

MLB.com ranked the top five seasons in Athletics franchise history, highlighting dominant squads across different eras. The list includes the 1931 team, which set a franchise record with 107 regular-season wins behind Lefty Grove, and Connie Mack's 1929 championship team that defeated the Chicago Cubs in five games.

The feature also highlights modern eras, including the star-studded 1988 Bash Brothers roster, the 1989 championship sweep over the San Francisco Giants, and the 2002 "Moneyball" squad that achieved an American League record 20-game winning streak.

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