Heading into the final day Horsfield, a sophomore at Florida, held a one-stroke lead but pulled away to win by a dominating nine-strokes.

“I feel like I played really good,” Horsfield told the Western Golf Association. “I could have been a little better, but that is nitpicking at things. Coming into [Thursday], if you would have told me you got to 17- under par, I wouldn’t have believed you, so I will take it.”

The remarkable play for Horsfield throughout the week was mostly done on the back nine where he went a remarkable 13-under.

In the morning round on Thursday, Horsfield shot a 4-under 67, with all of his work done on the closing nine. Following a 1-over 36 on the front, the Florida Gator star birdied five holes on the second nine for a bogey-free 5- under 31.

The stellar play for Horsfield continued in the afternoon, when he fired a 7-under 64. Horsfield birdied three front nine holes and then put an exclamation point on his three days of stroke play with six birdies on the final nine. The closing stretch began with birdies on Nos. 10-13 and then additional birdies on holes 15 and 16. If Horsfield hadn't bogeyed the final two holes he would have broken the scoring record he had set in the first round.