Just something random I discovered on the internet:

2004
Eric "Game Over" Gagne: 65.2 IP, 43 H, 4 HR, 15 BB, 93 K, 2.19 ERA
Frankie "K-Rod" Rodriguez: 71.0 IP, 44 H, 2 HR, 26 BB, 106 K, 1.77 ERA

and

B.J. "B.J." Ryan: 72 IP, 54 H, 4 HR, 30 BB, 102 K, 2.25 ERA

I think B.J. Ryan deserves a cool nickname, too. Those numbers stack up pretty well with the best in the biz.