Mike Trout has 45.9 fWAR from 2012 to today. The next closest position player has just over 2/3 that much, Josh Donaldson with 31.0. To put that in perspective, through five years Willie Mays had 31.1, Hank Aaron had 28.4, Mickey Mantle had 29.5, Alex Rodriguez had 35.6, Barry Bonds had 31.0, Ken Griffey Jr had 28.1,…