Jason Day's record-tying nine-under 63 led a birdie barrage on Thursday morning in the opening round of The Players Championship at TPC Sawgrass in Ponte Vedra Beach.
The world number one's sizzling start - tied for the low score on the famed Stadium Course - was good enough for the early lead in the so-called fifth major but, amazingly, did not put much distance between himself and the field.
In fact, among the first day's early wave, no fewer than 17 players were at five-under or better, with Bill Haas, Shane Lowry, Justin Rose and Cameron Tringale at seven-under, just two shots back from the leader.
Starting on the 10th tee, Day shot a 32 on his first nine and bettered that by a shot on his second nine, leaving even his wife impressed with how easy it looked.
Before Thursday's round of nine birdies and nine pars, Day's last round at TPC Sawgrass was an 81 with a triple and two doubles.
Meanwhile, world number two Jordan Spieth, competing for the first time since his Masters collapse and in the same group as Day, appeared to fight himself at times on Thursday, finishing with an even-par 72.