BIRTH NAME: Henry Louis Gehrig

YEARS ACTIVE: 1923-1939

TEAM(S): New York Yankees

First base is crowded with great players with animal nicknames, but with apologies to Andres "Big Cat" Galarraga, Orlando "Baby Bull" Cepeda, and Johnny "Big Cat" Mize, we've got to go with the Iron Horse here. Something about a streak? Even when suffering from broken bones in most of his fingers, or getting nearly knocked out by a pitch, Gehrig set a precedent of toughness and durability that all these soft big leaguers playing today can’t even touch.