Rory McIlroy’s preparation for the PGA Championship hit a painful snag on Tuesday when a stubborn blister forced him to cut his practice round short at Aronimink. The Masters champion, who limped through the final round of the Truist Championship just days earlier, stopped after just three holes, removed his shoe on the fourth tee, and rode back to the clubhouse in a cart. Still, he managed a smile as he signed autographs and posed for photos before heading out.

The blister, located under his right pinky toe, has been a nagging issue since his victory at Augusta in April. “Yeah, I’ve got a blister on my pinky toe on my right foot, but it’s underneath my nail,” McIlroy explained on Sunday. “I can’t really get to it, so it’s a little sore. But I’ll be all right.” He later told Irish media that he had the nail removed and is searching for a more comfortable pair of shoes to ease the discomfort ahead of Thursday’s opening round.

For golf fans, it’s a reminder that even the game’s biggest stars aren’t immune to the little things—like a sore toe—that can throw off their rhythm. McIlroy will have one more day to rest or practice before teeing it up at the PGA Championship, and given his recent form, he’ll be hoping this is just a minor bump in the road.

Meanwhile, Justin Rose is feeling right at home in the Philadelphia suburbs. The 45-year-old Englishman has a storied history on the Main Line, including his 2013 U.S. Open win at Merion and a runner-up finish at Aronimink in the 2018 BMW Championship, where he lost to Keegan Bradley in a playoff. For Rose, the area feels like a second home. “I think the whole area feels very familiar to the part of England I live in,” he said. “Very leafy, very green. Even this time of year, the spring here is very much like the spring in England.”

Rose credits the classic course designs at Merion and Aronimink for his success, noting that the old-school layouts suit his game. As the PGA Championship gets underway, all eyes will be on McIlroy’s toe—and Rose’s comfort zone.