Dustin Pedroia is arguably the greatest Red Sox infielder in post-integration history. He averaged 5 errors a year in 11 full-time seasons at second base.
Statisticians can point to Wade Boggs, who led the majors in times on base for eight straight years (in an era when people called Rickey Henderson the best leadoff man of all-time). Boggs was a great hitter who became a good third baseman, but teammates, fans and media didn't consider him a leader on and off the field, like they did with Pedroia. BBRef Most Similar by Ages: Pedroia age 24 - Rod Carew; Boggs age 38 - Rod Carew.
Career WAR for Boston:
Boggs 71.9, Pedroia 51.9, Nomar Garciaparra 41.2, Rico Petrocelli 39.1, Xander Bogaerts 35.2, John Valentin 32.5, Kevin Youkilis 31.3, Mo Vaughn 24.7,
Rafael Devers 20.1, Rick Burleson 18.3, Jody Reed 14.3, Marty Barrett 9.3, Brock Holt 8.6, Jerry Remy 6.5, Mark Bellhorn 4.1, Lou Merloni 2.4, Pablo Sandoval -1.6.