Corbin (elbow) will make one more rehab start before returning to the D-backs, after having his best outing in his comeback from Tommy John surgery Friday. Corbin threw six innings, giving up one run on four hits and two walks, while striking out five for Double-A Mobile. It looks like Corbin will return to the D-backs before the all-star break, but an exact return date and where his last rehab assignment will take place are unknown right now. This is positive news, especially after his comeback was slowed down following discomfort after an extended spring training outing. He has shown good velocity as his rehab has progressed, but his command will dictate his success when he gets back to facing major league hitters.