Adjustment bureau

If you think James Shields has been a different pitcher this year, you're right. Kim Klement/US Presswire

They say baseball is a game of adjustments. So when something isn't working, you have no choice but to mix things up. This group of five pitchers all made major changes to their pitching approach this season, and the results speak for themselves.

James Shields, Tampa Bay Rays
2010: 5.18 ERA, 1.46 WHIP
2011: 2.08 ERA, 0.96 WHIP