Cliff Lee (elbow) is on track to begin a rehab assignment at High-A Clearwater on Sunday. He'll officially be cleared if he wakes up with no discomfort on Wednesday, a day after throwing a 60-pitch live batting practice session. Lee has been sidelined since mid-May with a flexor strain in his left elbow but should rejoin the Phillies' rotation in a couple weeks if he can avoid setbacks.