Game Changers: Golfers Who Give Back\nWhat do Michael Phelps, Bill Clinton, Michael J. Fox and Morgan Freeman have in common? They're on the cover of the December issue of Golf Digest, where they're celebrated for using golf to help others\nOn how well he can play with Parkinson's disease:\n\n "I've been so lucky to be celebrated for what I do and really kind of humbled about that. It's great to do something where I really suck. My best score for 18 holes is 46 out and 46 in, and I'm a 22-handicap. My friend Clark Gregg, from the "Avengers" movies, has a great description of me teeing off: He says I look like I'm between two subway cars with a foot on each platform. Then he says, 'And you hit the ball 220 yards, and I don't know how you do it.'"\nOn playing golf with one hand:\n\n "I was a in a horrendous car accident four years ago. I don't know what happened, whether I passed out, went to sleep or what. The upshot is a paralyzed left hand. I literally can't use it. . . I don't seem to be any worse than I was with two hands. I can't hit it 240 or 260 yards like some of these guys, but I enjoy trying. "\nOn the health benefits of golf:\n\n "If you walk a hilly course on a windy day and you play all 18 holes, you won't say golf isn't a sport and golfers aren't athletes. I'm convinced one of the reasons my stepfather lived to 89 and lived as well as he did was because he played a lot of golf."\nOn his occasional displays of frustration on the course:\n\n "Oh yeah, I've thrown clubs. I launched my 7-iron and managed to get it stuck in a tree. All my buddies were laughing because they know how competitive I am. They love torturing me in the only sport I can't beat them."