Spain 's Jon Rahm , WAGR No. 16 , followed his second - round 64 with a 62 in the third round .
Spain 's Jon Rahm , WAGR No. 16 , held the WATC individual low score record for approximately 30 minutes until DeChambeau finished .
Spain 's Jon Rahm , WAGR No. 16 , followed his second - round 64 with a 62 in the third round and held the WATC individual low score record for approximately 30 minutes until DeChambeau finished .