15. Junichi Tazawa
One of the few positive developments during the dismal 2012 season was the emergence of Tazawa as a dependable and often excellent late-inning relief option. In his first full season after Tommy John surgery, Tazawa struck out 45 and walked just five, finishing with a 1.43 ERA in 37 appearances. He’s positioned to be the chief righthanded setup man this season, and may even be the closer-in-waiting.