CHARLOTTE, N.C. — Masters champion Rory McIlroy's driver wasn't the only one the United States Golf Association declared nonconforming in testing before this week's PGA Championship at Quail Hollow Club.
World No. 1 golfer Scottie Scheffler also confirmed Sunday that the USGA ruled his driver unplayable before he captured his third major with a five-stroke victory over Harris English, Bryson DeChambeau and Davis Riley.
«The driver testing is something that regularly happens on tour,» Scheffler said. «My driver did fail me this week. We had a feeling that it was going to be coming because I've used that driver for over a year. I was kind of fortunate for it to last that long, I felt like.»
McIlroy, who completed the career Grand Slam by winning a green jacket at the Masters in April, was also among the golfers whose drivers were declared nonconforming by the USGA, according to a report on SiriusXM PGA Tour Radio on Friday.
McIlroy, who tied for 47th at 3 over in the PGA Championship, left Quail Hollow on Sunday without talking to reporters for the fourth straight day.
He tied for 43rd in driving accuracy among the 74 players who made the cut Sunday, hitting 7 of 14 fairways. In the first round, he hit only 4 of 14 fairways.
The PGA of America requested that the USGA conduct driver testing at Quail Hollow, it said in a statement.
«That program is consistent with the same level of support that we provide to the PGA Tour as part of their regular program for driver testing,» the USGA said.
The driver testing focuses on, among other things, the «characteristic time» of a club's face, or its spring-like effect. Drivers' faces tend to «creep» or thin the more they're used by golfers, giving them even more spring.
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