PGA Tour veteran Nick Watney withdrew from the RBC Heritage tournament on Friday after testing positive for COVID-19, the US tour said in a statement.
Watney, who shot a three-over-par 74 in Thursday's opening round at Harbour Town, was tested for the coronavirus early Friday after complaining of symptoms, the tour said.
The 39-year-old American is the first player on tour to test positive for the coronavirus since play resumed in Texas last week.
Watney is now self-isolating while the tour has started tracing all those who had been in contact with him during this week's event at Hilton Head Island, South Carolina.
"Nick will have the PGA Tour's full support throughout his self-isolation and recovery period under CDC guidelines," the Tour said in a statement.
"For the health and well-being of all associated with the tournament and those within the community, the tour has begun implementing its response plan in consultation with medical experts, including working with those who may have had close contact with Nick."
The RBC Heritage is taking place without spectators as the PGA Tour feels its way back after shutting down in March as the coronavirus pandemic erupted.
Nick Watney of the United States has withdrawn from the RBC Heritage at Hilton Head, South Carolina after testing positive for COVID-19