Originally Posted by WhiteSoxNation
Not sure how throwing off speed preserves the arm......since you throw them with the same arm action/effort as a fastball......There were several starts when his FB was hitting at 91-93 and he was plenty effective.
Wilbur Wood used to throw like 360 innings / year no problemo. That is an extreme case but illustrates the point. Throw a knuckle curve from that Sale arm slot would be near unhittable ask Burt Hooten.