So they're tougher to pitch to but easier to get out? that seems utterly nonsensical. The definition of "tough to pitch to" should be "difficult to keep off base" Question: Where did I write that they are "tougher to picth to". You seem to be having trouble understanding my thesis, so let me simplify it: 1) Minor league hitters are not as good at hitting as MLers; 2) Minor league hitters also have a different approach (i.e., mental approach) to hitting than do MLers; 3) ML pitchers are more accustomed to pitching to ML hitters, and thus are more familiar / comfortable with their approach; 4) Therefore, minor league hitters present a special "problem" for ML pitchers b/c they take a different approach to hitting. This approach does not make up the gap between MLers and minor leaguers (obviously), but perhaps it causes some problems for longtime ML pitchers who find themselves on rehab assignments.