DORAL, Fla. (AP) Scott Piercy and Marcus Fraser are tied after the opening round of the Cadillac Championship, each shooting 6-under 66 on Thursday in the first World Golf Championships event of the year.
Phil Mickelson is alone in third, one shot back after a 67.
Adam Scott, Jason Dufmer, Charley Hoffman and Danny Willett all shot 68s, and world No. 1 Jordan Spieth was in another group at 69, three shots back. In all, 15 players finished within four shots of the lead on Doral's Blue Monster.
Defending champion Dustin Johnson struggled, shooting even-par 72 and finishing the day tied for 28th in the 66-man field.