During the third round at the Memorial Open on Saturday, Justin Thomas' caddy, Jimmy Johnson, left on the back nine after falling ill.
"Jimmy just wasn't feeling well," Thomas said, per ESPN's Mike Wells. "He was feeling dizzy. I mean, I can tell he was light-headed and just didn't have a lot of energy. I mean, I told him on 12 that if he needed to leave, he needed to leave. Just to make sure that he's OK versus both of us worrying about it out there, and I hit my tee shot and I came out and Jimmy was gone and my dad was there.