Doug Gray at Reds Minor Leagues did a breakdown of how Homer Bailey's groin injury may have impacted him last year. He compared Bailey's innings pitched before his groin injury on June 26th and after he returned from the DL, versus the approximately nineteen innings he pitched while injured. The difference is staggering and should give Reds fans great cause for optimism in 2008:

Non-injured innings pitched (93.1): 2.89 ERA and 1.17 WHIP
Injured innings pitched (19.3): 10.24 ERA and 2.24 WHIP