The History of The A's Baseball Team
The complete history of the Athletics franchise, from Connie Mack's Philadelphia dynasties through Kansas City, Oakland, Moneyball, and the move to Las Vegas.
Read the full story →EVERY A'S ROSTER SINCE 1901
Philadelphia to Kansas City to Oakland to Las Vegas. Every player and the position they played, one season at a time, going all the way back to 1901.
Explore all rosters →More Coverage
A Fan's Guide to the A's Move to Las Vegas
The A's New Las Vegas Ballpark: What Fans Should Know
What Las Vegas Can Learn From Baseball's Best Ballpark Fan Cultures
The A's Future Core Headed to Vegas
Las Vegas Athletics Stadium: Where Construction Stands in Late 2026
Every Home the A's Have Had: A Ballpark History from Philadelphia to the Las Vegas Strip
The Las Vegas Athletics Stadium: Timeline, Location, and What's Next
Your First Las Vegas Athletics Game: A First-Timer's Game Day Guide
Getting to (and Around) Athletics Games in Las Vegas
PHILADELPHIA TO LAS VEGAS
A charter member of the American League, the Athletics are born under Connie Mack.
The franchise leaves Philadelphia after 54 seasons for Kansas City.
The A's move west and build a dynasty, three straight titles in 1972–74.
An interim home in Sacramento bridges the gap between Oakland and the desert.
A new 30,000-seat ballpark on the Tropicana site opens on the Strip.
DIG INTO THE ARCHIVE
5,000+ player seasons, every A's player since 1901
Explore →All 126 rosters, season by season
Explore →Franchise eras, dynasties, and milestones
Explore →Every home the A's have played in
Explore →The skippers who ran the dugout
Explore →Hall of Famers, MVPs, and league honors
Explore →Trade calculator, betting model, and analytics
Explore →Your guide to 2028 tickets in Las Vegas
Explore →News, stadium watch, and fan guides
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