First off one of the many reasons PAP stinks is not all pitchers are created equal, nor are mature arms in as much danger as developing arms. It's heart is in the right place, but there are literally double digit issues with the metric. PAP aside this is about developing a pitcher, and Yo isn't fully developed, not even close. He's all we have at this point for top of the rotation talent, without him the rest is immaterial. We aren't going to outscore teams and win a world series with a rotation of Bush, Burns, Looper, Suppan, whomever... that's not realistic, nor do we really have a good chance at making the playoffs. Since there is some misinformation being spread here: BP discussion on the injury Nexus A Hardball Times discussion A Fangraphs Article Hardball Review Article A link to an actual scientific study done by Monash University in Australia. It's an interesting read and is already 12 years old, pitching discussed starting with Section 6.2, the study deals with all baseball and softball related injuries, prevention, and touches on rehabilitation.