Dodgers pitcher Randy Wolf's last-ditch effort to return from the disabled list before the end of the season has been snuffed out by another setback. The left-hander felt more discomfort in his shoulder this week and will undergo arthroscopic surgery Wednesday at the Kerlan-Jobe clinic to determine the cause. The development casts Wolf's future into doubt, especially given that he spurned a handful of multi-year offers last winter to accept a one-year contract with his hometown Dodgers. "Obviously, I took a huge risk to come here," Wolf said. "I knew it was a risk, but I took a gamble, and I lost. Life is full of them." The Dodgers hold a $9 million option on Wolf for next season that they clearly aren't going to exercise.