The injury issue is twofold. First and foremost, the Mets have lost there closer for nearly half the season. However the bigger issue is the timing and severity of the injury. While the Mets have indicated an unwillingness to do so, Parnell represented one of their best Major League caliber trade chips. His name figured to come up this winter in trade discussions. Having season ending surgery and no real date of return will certainly squash that.