Indians outfielder Grady Sizemore is done for the season after undergoing knee surgery on Friday. Sizemore was forced to undergo microfracture surgery in Vail, Colorado in hopes that he won't need further procedures on the knee in the future. "It's tough because we were hoping he wouldn't have to get the microfracture surgery but this is what is best for him," Indians manager Manny Acta said. "It's going to give him the best chance to play longer and be as healthy as he can. What's good for him is good for us."