Under Rule 6.3c, it’s a two-shot penalty for each player who hit the wrong ball, and the mistake must be corrected by going back and playing the correct ball to finish the hole. Both Zalatoris and Davis did. Both made bogey when both would’ve made birdie.

Playing the wrong ball can be costly in strokes, money, and FedEx Cup points, especially at a Signature Event like The Sentry. Just ask Will Zalatoris, who played Cam Davis’ golf ball on the par-5 15th hole on Sunday at Kapalua.

Cameron Davis and Will Zalatoris were both left counting the cost of an unusual error on their final round at The Sentry, with the pair hitting each other's golf balls by mistake