Trinidad went 11 rounds with one of the best middleweights of all time (who as someone mentioned started out as a light HW). He lost his undefeated record to an ATG. He finished his career with 3 losses, all to future Hall of Famers. Before that, he amassed a fantastic record with wins over some hugely accomplished fighters. No shame in any of that.

(At least he didn't seek out undersized fighters to add to his fukking legacy).