He sure knows his own. But he never has been a problem here, not in his first stint with San Diego and he hasn't been one this season. When a certain Hall of Famer is willing to begin the year with the Padres' AAA team in Portland, he isn't ready to quit. Players such as Rickey and Tony are first-ballot Hall of Famers because they didn't make many mental mistakes. Just sitting next to them during a game can be helpful.
Young players can learn libraries.
I fail to see the downside of having great players on a roster. As long as they haven't become athletic embarrassments, and Tony and Rickey aren't that, they should be welcomed. Because they can be extremely important. Especially in a division that isn't what it's cracked up to be. Look at this thing.