DUBLIN, OHIO — Jon Rahm, a popular player on the PGA Tour and the world’s third-ranked male golfer, had just charged to a six-stroke lead on Saturday in the third round of the Memorial Tournament, an event he won a year ago. Walking from the 18th hole, where a crowd surrounding the green showered him with warm applause, Rahm, 26, shook hands with his playing partners and smiled.
Seconds later, he was doubled over and in tears, his left hand clasping his face. A doctor for the tour had met Rahm at the edge of the green and informed him that he had tested positive for Covid-19, a result reported to the tour as Rahm was shooting a sparkling eight-under-par 64 on the difficult course at the Muirfield Village Golf Club.