William John Horschel is an American professional golfer who currently plays on the PGA Tour. Horschel was born in Grant, Florida. He won the individual medalist honors at the 2006 U.S. Amateur, shooting a two day score of 138 at Hazeltine National Golf Club in Chaska, Minnesota. His opening round of 60 was an 18–hole tournament and USGA record. He failed to make it past the third round of match play, however.