Jordan Spieth hits from the 15th fairway during practice for the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Wednesday, June 10, 2020. (AP Photo/David J. Phillip)

Fans stand behind a fence as Jon Rahm, of Spain, watches his tee shot on the second hole during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

Ryan Palmer was with his caddie down the first fairway during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

A rules official hands a score card to Ryan Palmer at the first tee during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

Dustin Johnson tees off at the 11th hole during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

Dustin Johnson's caddie Austin Johnson, right, wipes down a putting green flag pole with a disinfectant wipe along with Bryson DeChambeau's caddie Tim Tucker during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

Harold Varner III tees off on the 14th hole during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

Jon Rahm, of Spain, tees off on the 17th hole during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

Justin Rose, of England, watches his second shot on the 18th fairway during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

Justin Thomas tees off on the 17th hole during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

A sound technician wears a protective mask during the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)

Fans cheer while sitting in a grandstand outside the course overlooking the 15th fairway in order to watch the first round of the Charles Schwab Challenge golf tournament at the Colonial Country Club in Fort Worth, Texas, Thursday, June 11, 2020. (AP Photo/David J. Phillip)