MLB Oakland A's Baseball Cap 12x Signed Vintage Hat Rickey Henderson AthleticsMLB Oakland A's Baseball Cap 12x Signed Vintage Hat Rickey Henderson Athletics The Oakland Athletics are a professional baseball team in the MLB based in Oakland California and play out of the Oakland Coliseum. They have won 9 World Series (tied with the Boston Red Sox), have 15 American League pennants, and have 7 numbers (and one businessman) retired, including Rickey Henderson. He was an all star and a Gold Glove winner with the Athletics Very good