Reggie Jackson / played 21 seasons and reached the post-season in 11 of them, winning six pennants and five World Series. His accomplishments include winning both the regular-season and World Series MVP awards in 1973, hitting 563 career home runs, maintaining a .490 career slugging percentage, being named to 14 All-Star teams, and the dubious distinction of being the all-time leader in strikeouts with 2,597 (he finished with 13 more career strikeouts than hits).
Today, in honor Jackie Robinson, the first African American to play in the Major League, all players and coaches wore his number 42 instead of their own numbers. Robinson's number has been universally retired by all MLB teams. After the Yankees Mariano Rivera finally retires, the number 42 will only be worn on Jackie Robinson Day.