One lesson they taught him?
"They never let you see that the game got out of hand and they never let the game get out of hand," Hamels said. "I think that's what it was. They never really said anything, you could just see it in their mannerisms. They really thought they were never out of the game. They never thought they weren't qualified to be the best. They thought they were the best and you could see it and the way they went about their business."
Hamels learned from them all as he rose to become one of the best left-handed starting pitchers in the game.