If Sheets misses a start, this will be the third season in a row that he hasn't made his full slate of starts. Whether you call that injury prone or not, it certainly means that he has not been the epitome of health either. It's starting to become a trend. While it may appear these are fluke injuries, or unrelated injuries, the fact remains that he has missed starts because of injuries. It might reach the point where the most anyone should expect of Sheets is 22-25 starts. He already has 18 this season, so this injury would have to become fairly severe for him to not get 25. But in 2006, he started only 17 games and in 2005, he started only 22 games. It's three years since he made over 30 starts.