There's no denying how good Aroldis Chapman has been this season. He earned his eighth All-Star appearance in the first half, and he's been the best member of a bullpen that ranks third in ERA (3.37) this season. But, spoiler alert, it might be the dumbest thing you hear all day. Well, for one thing, he's finally committed to his sinker, as he's throwing it 34% of the time this year, compared to just 5% three years ago. Or, how about the fact that Chapman's arm angle has increased by nearly seven degress from just five years ago?