Bobby Doerr – No. 1
Considered to be the top second baseman in franchise history – at least until Dustin Pedroia surpasses him – Bobby Doerr spent his entire 14 year career with the Red Sox.
Doerr was a nine-time All-Star who appeared on the MVP ballot eight times, finishing as high as third place in 1946. He as named The Sporting News AL Player of the Year in 1944 when he led the league with a .528 slugging percentage.
He was an exceptional defensive second baseman who was among the best in the game at turning double plays. His 116 defensive rating is the fourth highest in franchise history at any position and a significant reason why his 53.3 WAR ranks sixth among position players.
A Hall of Fame career was cut short when a back injury forced Doerr to retire at the age of 33. By that point he had already appeared in 1865 games, the sixth most in franchise history.