Rory McIlroy’s first round at the PGA Championship was a struggle. It was also a learning experience.

Rory McIlroy struggled with wayward tee shots in a four-over par 74 start Thursday at the PGA Championship, then was asked to describe his frustrating round at breezy Aronimink.

Rory McIlroy’s first round at the PGA Championship was a struggle. It was also a learning experience.

The Masters champion hit just five of 14 fairways Thursday at Aronimink and bogeyed his last four holes.

Rory McIlroy and others had complained about the setup at Aronimink in first two rounds, but Round 3 is proving easier and a 66 put McIlroy squarely in the mix.