Low scores poured in Thursday at the Turkish Airlines Open, and the leaderboard is tight through 18 holes.
Three are tied at the top at 7 under, as Nicolas Colsaerts, Joost Luiten and Haydn Porteous all fired 64s at Regnum Carya Golf and Spa Resort.
Overall, 32 players fired sub-70 rounds Thursday and 41 posted sub-par rounds in the 78-player field.
Among the notables chasing are Padraig Harrington (T-4, 6 under), Ian Poulter (T-6, 5 under), Tyrrell Hatton (T-10, 4 under), Lee Westwood (T-10, 4 under) and Paul Dunne (T-10, 4 under).
Justin Rose, Thomas Pieters and Matthew Fitzpatrick are all tied for 19th at 2 under. Tommy Fleetwood, the Race to Dubai leader, is tied for 42nd at even par.
Colsaerts and Porteous both have two European Tour wins. Luiten owns five titles on the circuit.