15. Brandon Webb, 25, D'backs
Season: 3-0, 3.24, K/BB: 20-11
Career: 20-25, 3.24, K/BB: 356-198
This sinkerballer made a strong case for the Rookie of the Year award in 2003 but slid back to the pack last season. Now his groundball-to-flyball ratio has climbed to a career-high 4.56 and he is back to winning again.