Erik Compton is a walking billboard for organ donation and sheer determination. He's also at the top of the Greenbrier Classic leaderboard. Playing on a late sponsor exemption, the 30-year-old double heart transplant recipient shot a 7-under 63 on Thursday to share the first-round lead with rookie Matt Every in the inaugural tournament. http://sports.espn.go.com/golf/news/story?id=5421557
