Russell Henley went from contending to likely missing the cut Friday at the Mayakoba Golf Classic thanks to an unfortunate and costly mistake.
Henley was signing balls for fans after his second round when he realized one of the balls was slightly different from the one he uses. Henley said he was unsure how the ball got in his bag but that he used it on hole Nos. 9-12.
As a result, Henley was penalized two shots on each hole, eight strokes in all, for violating Rule 20-3, which covers all rules not laid out in the Rules of Golf.