Zach Johnson tests positive, list of British Open WDs grows
Zach Johnson hits off the second tee during the final round of the John Deere Classic golf tournament, Sunday, July 11, 2021, at TPC Deere Run in Silvis, Ill. (AP Photo/Charlie Neibergall)

Zach Johnson hits off the second tee during the final round of the John Deere Classic golf tournament, Sunday, July 11, 2021, at TPC Deere Run in Silvis, Ill. (AP Photo/Charlie Neibergall)

Jul. 11, 2021 07:07 PM EDT
Ryan Moore hits off the second tee during the final round of the John Deere Classic golf tournament, Sunday, July 11, 2021, at TPC Deere Run in Silvis, Ill. (AP Photo/Charlie Neibergall)

Ryan Moore hits off the second tee during the final round of the John Deere Classic golf tournament, Sunday, July 11, 2021, at TPC Deere Run in Silvis, Ill. (AP Photo/Charlie Neibergall)

Jul. 11, 2021 07:09 PM EDT