Koepka earns huge Challenge Tour win

American Brooks Koepka fired a 5- under 66 on Sunday to cruise to a 10-stroke victory at the Challenge de Espana.

Koepka finished his easy victory at 24-under-par 260. The closing 66 matched his worst round of the week as he posted two 64s and two 66s.

The 23-year-old American won for the second time this season, and for the third time in all on the Challenge Tour.

Koepka traded a bogey for a birdie from the second. He birdied three in a row from the fifth, then birdied the ninth to make the turn at minus-23. He tripped to a bogey at 12, but erased that mistake with a birdie on No. 13. Koepka birdied the par-5 17th for the fourth time this week before making par at the last to seal the win.

Luis Claverie (66), Edouard Dubois (72) and Bernd Ritthammer (68) shared second place at 14-under 270. Julien Guerrier (66), Daniel Im (66) and Alfredo Garcia-Heredia (68) tied for fifth at minus-13.