Franchise Archive · Since 1901
The History of the Athletics
One of baseball's oldest and most decorated franchises: 9 World Series titles, four cities, two Connie Mack dynasties, the Swingin' A's three-peat, the Bash Brothers, and Moneyball. Here's the whole story, era by era.
9 World Series Championships
Franchise Timeline
1901–1954
Philadelphia Athletics
The founding era under manager-owner Connie Mack, home to two dynasties and five World Series titles.
1955–1967
Kansas City Athletics
Thirteen seasons in Kansas City, a rebuilding chapter that developed talent later key to the Oakland dynasty.
1968–2024
Oakland Athletics
The longest era: the three-peat Swingin' A's, the Bash Brothers, Moneyball, and 57 seasons at the Coliseum.
2025–2027
Athletics (Sacramento, interim)
An interim home at Sutter Health Park in West Sacramento, bridging Oakland and Las Vegas.
2028–
Las Vegas Athletics
A new 33,000-seat ballpark on the Las Vegas Strip is planned to open for the 2028 season.
Retired Numbers
9
Reggie Jackson
OF · Hall of Fame
24
Rickey Henderson
OF · Hall of Fame
27
Catfish Hunter
P · Hall of Fame
34
Rollie Fingers
P · Hall of Fame
43
Dennis Eckersley
P · Hall of Fame
42
Jackie Robinson
Retired across all of MLB
Hall of Famers
Connie Mack
Manager & Owner · Philadelphia
Eddie Plank
Pitcher · Philadelphia
Chief Bender
Pitcher · Philadelphia
Frank "Home Run" Baker
Third Base · Philadelphia
Eddie Collins
Second Base · Philadelphia
Mickey Cochrane
Catcher · Philadelphia
Jimmie Foxx
First Base · Philadelphia
Lefty Grove
Pitcher · Philadelphia
Al Simmons
Outfield · Philadelphia
Reggie Jackson
Outfield · Oakland
Catfish Hunter
Pitcher · Oakland
Rollie Fingers
Pitcher · Oakland
Rickey Henderson
Outfield · Oakland
Dennis Eckersley
Pitcher · Oakland
Tony La Russa
Manager · Oakland
A selection of the franchise's Hall of Famers. Explore every player who ever wore the uniform in the all-time player directory, or tour every home in the ballparks directory.
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