Is that really true, though? The only time I've seen Hader really get in trouble is when he gets behind in too many counts, has to abandon his slider and grooves a FB. I haven't really noticed any difference in how much a team has seen him. When he's on it doesn't really make a difference. The three teams he faced the most this year (Cubs, Cards, Pirates, and Reds obviously), Cards rocked him to an .840 OPS. Pirates .531, Reds .454, and Cubs .386. And the Cubs had the most PA's against him.