Simpson leading Heritage, Watney leaving after positive test

Webb Simpson lines up his putt on the first green, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)

Bryson DeChambeau follows his shot from the second tee, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)

Dustin Johnson follows his shot from the 11th tee, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)

Mackenzie Hughes of Canada hits from the 18th tee, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)

Bryson DeChambeau chips onto the 15th green, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)

Rickie Fowler hits from the 11th tee, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)

Rory McIlroy of Northern Ireland, hits from the sand along the 16th fairway, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)

Brooks Koepka looks at his putt on the ninth green, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)

Corey Conners of Canada putts on the ninth green, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)

Golfers warms up on the practice green, during the second round of the RBC Heritage golf tournament, Friday, June 19, 2020, in Hilton Head Island, S.C. (AP Photo/Gerry Broome)