In 2001 he sat because he was young, he could have pitched through it. 2002-2004 he had no injuries. 2005 he got sick which limited him a few starts thats not an injury. Late in the year he got hurt with an injury that was going to take 9-12 months to recover from, he came back early and aggravated the issue (yes the lat is directly related to the shoulder). He has had one major injury in 6.5 years. Imagine next year Zambrano goes down in May, misses the rest of the season and then is just fine in 2009. Is he injury prone because he only has 39 starts over 2 seasons. If Sheets doesn't try to come back and is just hurt for a full season would he no longer have the injury prone tag? To me it seems like the reasoning for the tag is because he tried to come back too early and ended up on the DL again for a couple months, that seems silly to me. Many, many injuries are related to previous injuries. Pitchers try to compensate for previous injuries with their mechanics and wind up hurting something else(Prior comes immediately to mind). So, Sheets having a shoulder injury, coming back and hurting his lat may have the same root cause, but he's still missing time for it and it begs the question as to if he can right himself and consistently make his starts.