Chris Tillman's changeup grip, seen here, has helped turn him into an All-Star.
Justin Verlander is known for his fastball but his changeup can be just as important to him.
For now, the changeup is more finishing piece than fundamental, but its impact is undeniable, any way you spin it.
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide—from Peter King, Tom Verducci, Lee Jenkins, Andy Staples, Grant Wahl, and more—delivered straight to you, along with up-to-the-minute news and live scores.