I was a big fan of Jaime Garcia this past year, and it really dissappointed me when I heard that he was undergoing Tommy John Surgery back in September. While it certainly does not signal the end of his career, it's always unfortunate to watch a young, talented pitcher waste his years away on the DL. Hopefully he'll recover quickly and make his way back for the 2010 season.
There's an interesting article on ChrisOLeary.com that was written back in July breaking down Garcia's mechanics and some of the potential arm and shoulder problems he could face over time.
Had he been healthy for the 2009 season, I would have projected something along the lines of a 1.25 to 1.35 WHIP, with an ERA in the 3.50 to 4.00 range. Along with the help of a decent Cardinals offense, Jaime might have been able to win anywhere from 10 to 15 games. Oh, what might have been.