High school biology teacher looks to make the most of his 'Tin Cup' moment at the US OpenHigh school biology teacher looks to make the most of his 'Tin Cup' moment at the US Open - The Associated Press

Colin Prater feels a little like Kevin Costner’s character in “Tin Cup” this week — a relative unknown who suddenly finds himself on one of golf’s biggest stages at the U.S. Open. So you can't blame him for being a little nervous. After all, his full-time job…