Patrick Corbin said Sunday that he will decide after a second opinion this week whether to rehab or undergo Tommy John surgery to repair a partial tear of his ulnar collateral ligament. It would be shocking if he chooses rehab, as it's something that simply doesn't work. Corbin revealed that he's been nursing some elbow tightness all spring but had chalked it up to fatigue. The issue came to a head in his last outing, when the pain became too much during Corbin's final three pitches.