I think Mattingly ultimately just can be lumped in with a bunch of other 1b. I understand the injuries, but longevity is part of it. He was only top 5 in the league in WAR 1 time. Never won a WS, heck did the Yankees ever even win the division when he played? There are more 1B with higher WAR and JAWS not in the Hall, than ones with less that are in. Honestly this would absolutely be him getting in for being a Yankee