What are good hamstring exercises?

Chances of a complete recovery after surgery are estimated today at 85 to 90 percent. At the time of Tommy John's operation, Jobe put his odds at 1 in 100. After his surgery in 1974, John spent 18 months rehabilitating his arm, returned for the 1976 season, and went on to pitch in the major leagues until 1989 at age 46. Today, the procedure takes about an hour. Full rehabilitation takes about a year for pitchers and about 6 months for position players.