Jon Rahm's first round at the PGA Championship was a rollercoaster of emotion, but one moment left him feeling anything but victorious. After carding a solid one-under 69 at Aronimink Golf Club, the Spanish star was still stewing over an incident on the par-4 7th hole—one that ended with an apology and a promise to make things right.

Here's what happened: Rahm's second shot from the left rough sailed long over the green. Frustrated, he took a swipe at the turf—and that divot struck a volunteer square in the face and shoulder. "Thanks for reminding me of that," Rahm told a reporter, clearly still shaken. "I got a flier on my second shot that went long. Out of frustration, I tried to make an air swing, but I wasn't looking. I took a divot, and unfortunately, I hit a volunteer. It hit him in the shoulder and then the face. I couldn't feel any worse. That's why I was there apologizing. I need to track him down to give him a present—it was inexcusable and completely avoidable."

Video from the PGA Championship's website shows Rahm hitting over the green, then swiping at the grass. A commentator's "Oh, and there we go" captures the awkwardness before Rahm turns to the gallery. "Whether it was my intention or not, it was just not good," he admitted. The mishap cost him a bogey on the 7th, but Rahm rebounded with two-under golf over the remaining 17 holes—including a jaw-dropping eagle from 98 yards out on the par-4 2nd.

"What can I say? It was a phenomenal shot," Rahm said of his recovery. "I came off the 1st green kicking myself for a wrong shot choice. Then on the next hole, I had a similar number into the wind, made the right decision, and hit a great shot."

It's a reminder that even the pros have moments they'd like back—on and off the course. For Rahm, the lesson is clear: keep your cool, because you never know where that divot might land.