Charlotte, N.C. - Rory McIlroy was forced to use a backup driver in the PGA Championship and was considered to have failed after he arrived at Quail Hollow, according to a report on Siriusxm PGA Tour Radio.

McIlroy tied for driving accuracy among 74 players who advanced on Friday, hitting just 10 goals in two rounds. He hit only four out of 14 fairways on Thursday, ranking 150th among 156 players in the field.

The Masters champion cut that number as the bogey on the last hole was driven toward the corporate tent.

For the second day in a row, McIlroy left Quail Hollow and refused to talk to the media.

USGA test clubs to ensure that they meet the clubs according to the requirements of the US and Mexico Championships and confirmed USGA's test at Quail Hollow when the US PGA requirements. All tests were completed before the first round.

"The program is consistent with the same level of support we provide for the PGA Tour, which is part of its regular driver testing program," USGA said.

The result is confidential.

Instead of responding immediately to requests such as how many players submit drivers for testing, the USGA statement is referred to the USGA statement.

These tests are often random and it is not uncommon to test before a big champion.

One such case was opened for the British Open in 2019 at Royal Prowush, when Xander Schauffele was one of 30 players, tested by R&A, who managed golf outside the United States and Mexico.

Schauffele said he didn't know his driver didn't know until he was notified and then worked that Tuesday night in search of a replacement. He was angry with R&A because he didn't keep things secret.

"My companion is called a cheater by my opponent," Schauffele said in 2019. "It's all jokes, but it's not going well when someone shouts "scammers" in front of 200 people."

After heavy use, the driver will usually fall outside the limit. While McIlroy and others will carry backups with you just in case, they may spend some time feeling comfortable like a regular driver.

McIlroy tied for seventh place in the Truist Championship last week. Last month, when he won the Masters for the 17th time, he would be the only sixth player in his career, a career grand slam.

The Associated Press information is used in this report.