If the Sox can repeat, Dustin Pedroia would be the first player in team history to win four rings with the Red Sox. Right now, he is tied at three with David Ortiz (04, 07, 13), Harry Hooper (1912, 1915, 1918) and Heinie Wagner (1912, 1915, 1918).
Duffy Lewis would also be on this list, but he did not play in 1918 as he was serving in the Navy. He returned to MLB in 1919, but as a Yankee...