Fresh off his first major at the PGA Championship, Day pulled away early and poured it on with three long birdie putts on the back nine at Plainfield for an 8-under 62 and a six-shot victory.
Day finished at 19-under 261. He won two weeks ago at Whistling Straits with a record to par at 20-under 268.The victory moves the 27-year-old Australian to the top of the FedEx Cup, assuring he will be among the top five with a clear shot at the $10 million bonus.
And while he stays at No. 3 in the world, Day now is in the picture with Rory McIlroy and Jordan Spieth for golf supremacy.