Catcher without a doubt. Just watch most teams warm up, whats the catcher doing. Catching balls thrown in from the field. Infielders are getting ground balls, outfielders are getting flyballs and one hoppers. Everyone is working on throwing to every base. Except the catcher, she is just the coaches ball retriever. Oh and for most teams she gets to throw 2-3 balls down to second and on the truly progressive teams she gets to catch a pop up the coach throws just before they leave the field. Sadly that is also exactly how practice goes as well.