Baseball Prosectus的John Perrotto表示，Joba Chamberlain肩膀的問題是讓洋基 這時候即使想要也不可能將他放回牛棚的原因。因為肩膀的問題讓他很難很快地熱身，這 不適合當後援的投手。 這也令一些人懷疑，這也是他球速時好時壞的原因。因為去年他受傷前，據看過他在 2A先發的球探表示，他先發1-7局都可以投到96miles以上。即使上了大聯盟受傷前，先發 的球速也都穩定的在93-97間。 　　但他的投球機制一直被批評，包括Mitch Williams, Dan Plesac (MLB Network)和 Orel Hershizer (ESPN)都認為Joba過度使用上半身的力量，而沒有好好使用腿部的力量， 遲早肩膀會出問題。 但他本人否認肩膀有問題的說法，Girardi也表示這絕不是他們將Joba放在先發的原因 。當然這也是去年繼BP說，因海盜隊擔心Phil Coke肩膀關節唇受過傷而決定更換交易的球 員，但Phil Coke個人堅決否認自己受過這樣的傷，認為這是個不實的消息後。再次有洋基 球員對BP的消息提出否認。只是不管是真是假，我們就仔細觀察下去。 www.riveraveblues.com Perrotto: Joba’s shoulder preventing bullpen move anyway By Benjamin Kabak Buried in the “Rumors and Rumblings” section at the bottom of John Perrotto ’s weekend roundup column on Baseball Prospectus was an intriguing note about Joba Chamberlain. “The Yankees couldn’t move right-hander Joba Chamberlain from the rotation back to the bullpen if they wanted to at this time, because shoulder problems make it too difficult for him to warm up quickly.” Bullpen considerations aside, I have to wonder about the veracity of this rumor. If Joba had a known shoulder problem, the Yankees would not be trotting him out there every five days. They care too much about and are too focus on Joba’s future to risk his health in the short term. A shoulder problem, however, would explain the downward trend in fastball velocity Joba has been displaying since his August 2008 injury. One of the logical fallacies of the B-Jobber argument is that Joba could go from throwing 91 mile-per-hour fastballs, as he was last week in Texas, to throwing 98 out of the pen. That simply isn’t true, and right now, this rumor puts into print something many fans have been wondering about Joba. For now, it is simply a rumor, but we’ll keep our eyes on it. Frank says: June 1st, 2009 at 12:49 pm Don’t know if this is true, but if it is, it might not be a total surprise. Joba’s delivery has been critcized by Mitch Williams, Dan Plesac (MLB Network) and Orel Hershizer (ESPN) as lacking leg drive and follow through. Essentially, his landing leg is viewed as being too stiff and he seems to be throwing more with his upper body and less with his legs. This will inevitably lead to shoulder problems. www.nj.com Yankees pitcher Joba Chamberlain denies rumor that shoulder issue has kept him out of bullpen by Marc Carig/The Star-Ledger Tuesday June 02, 2009, 11:25 AM CLEVELAND -- Is Joba Chamberlain a starter only because a shoulder problem prevents the pitcher from warming up fast enough to work out of the bullpen? Not so says the pitcher and Yankees manager Joe Girardi. From John Perrotto in baseballprospectus.com (hat tip/River Ave. Blues): The Yankees couldn't move right-hander Joba Chamberlain from the rotation back to the bullpen if they wanted to at this time, because shoulder problems make it too difficult for him to warm up quickly. "Not at all," Chamberlain said after his start on Monday night. "I don't know where that came from." Girardi also denied the snippet, which was listed under the "AL Rumors and Rumblings" section of Perrotto's column on Sunday. "That's not the reason we haven't put him in the bullpen," Girardi said. "The reason we haven't put him in the bullpen is because we envision him as a starter." --

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