Fowler now leads by one over Jon Rahm, Chez Reavie and his joint 36-hole leader, Bryson DeChambeau, while crowd favourite and three-time winner, Phil Mickelson, Xander Schauffele and Daniel Berger are another shot back and sharing 5th place.
Fowler has been twice runner-up in the event and appears on the verge of a 5th PGA Tour title although the 13 players within three shots of his lead might yet have some say on that.
Fowler has been twice runner-up in the event and after struggling to the turn in even par today he switched into another gear over the closing six holes holing a ten-footer at the last to edge clear of the field.
Rahm is on the verge of claiming the number one standing in the world and like Fowler he would also birdie his final three holes to keep his hopes alive of a third PGA Tour title to go with his two European Tour titles.
Aaron Baddeley continued his strong improvement after his disappointing opening round, a third round of 66 today moving him into a share of 21st and he now leads the Australians.
Marc Leishman is 35th and Cameron Smith dropped 31 places with his round of 74 to be in 50th place.
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