Xavier Nady, suffering from a partially torn elbow ligament, will begin hitting drills on Friday. These exercises will be a true bellwether for Nady. If the Yanks’ outfielder can swing without completely rupturing the ligament or feeling more pain, then he and the Yanks can begin thinking about rehab. Nady has been undergoing a platelet-rich plasma injection regime in the hopes of avoiding Tommy John surgery. If he responds well to the baseball exercises, he feels he could start a rehab assignment on Monday, May 25 with mid-June as a possible return date. He would probably just DH for the rest of the season.