Abraham Ancer plays a shot from a bunker on the 2nd hole during the first round of the Masters.
CNN  — 

Mexican golfer Abraham Ancer says he is “gutted” after having a two-stroke penalty assessed for an unintentional bunker error in the first round of the Masters.

Video footage showed that Ancer “unknowingly” touched the sand in a bunker on the 15th hole on Thursday.

In a statement from James B. Hyler, Jr., chairman of the Augusta National’s competition committee, because the touching of the sand was “deemed visible to the naked eye” and the world No. 31 signed his scorecard, a penalty was handed out.

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“On the 15th hole during Thursday’s first round, Abraham Ancer unknowingly touched the sand before making his third stroke from the greenside bunker,” the statement said.

“After Mr. Ancer had signed his scorecard and exited the scoring area, video evidence was reviewed by the Committee regarding a potential breach of Rule 12.2b(1), which states that touching sand in a bunker right behind the ball results in a penalty. The touching of the sand was deemed visible to the naked eye. Had this not been the case, the video evidence would have been disregarded and a penalty would not have been applied.”

Having finished with a bogey six on the par-five 15th hole, it became a triple-bogey eight with the penalty and his one-over 73 became a three-over 75.

“I was just informed that I have been assessed a 2 stroke penalty for unintentionally grazing the sand in my backswing on hole 15,” Ancer wrote on Twitter on Thursday, accompanied with a video of his transgression. “While I’m gutted, I can’t wait to get after it tomorrow.”

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Rules for televised competitions outlined in 2017 by the United States Golf Association’s (USGA) state that it will “assign one or more of its officials to monitor the video broadcast.”

“This monitoring role will include both a proactive review to identify and help resolve potential Rules issues as they arise, and a responsive review when needed, such as to help referees on the course who ask for information on a real-time basis and to help the Committee when it is assessing issues based on something that happened at an earlier time.”

Ancer is in a group with early leader Hideki Matsuyama as well as Harris English for the opening two rounds.