Neither player realized the error until they reached the green. The penalty for playing the wrong ball is two shots, so the players had to return to the spot where they hit the incorrect golf balls and play from the correct spot.

Cameron Davis and Will Zalatoris miss out on thousands of pounds in prize money after a mix-up at The Sentry tournament in Hawaii.

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.

It almost seems impossible—especially on the PGA Tour. In the final round of the Sentry, Will Zalatoris and Cam Davis, playing in the same group, were penalized two strokes for playing the wrong golf ball on Kapalua’s par-5 15th.

A mix-up between Australian Cameron Davis and American Will Zalatoris in the final round of The Sentry on Sunday led to both golfers walking away from the tournament with significantly reduced prize cheques.

A mix-up between golfers Cameron Davis and Will Zalatoris at The Sentry tournament resulted in both players incurring penalties. They mistakenly hit each other's balls on the 15th hole. The mistake led to a reduction in their prize money,