Struggling professional Ted Oh stole the limelight on the first day of the TCL Classic at Harbour Plaza Golf Club in China.
The young Korean who is battling to keep his card on the Davidoff Tour this year fired a five-under-par 67 in the Davidoff Tour event to lead by a stroke.
Ireland's Paul McGinley came in just four shots behind, with a 71.
Tucked in behind Oh are a group including Lee Westwood, Thongchai Jaidee from Thailand, and Korean Charlie Wi, who all shot 68.
California-based Oh is best known for being the youngest player to qualify for the US Open when he achieved the feat as a 16-year-old amateur in 1993.
Leading scores in the first round of the APGA TCL Classic, Harbour Plaza GC, Dongguan, China
(10 players failed to finish due to darkness, par 72):
67 Ted Oh (Kor)
68 Chung Joon (Kor), Eddie Lee (Nzl) Zaw Moe (Myn), Thongchai Jaidee (Tha), Charlie Wi (Kor), Lee Westwood (Eng), Gerald Rosales (Phi)
69 Chris Williams (Eng), Prayad Marksaeng (Tha), Jim Johnson (USA), Danny Zarate (Phi), Wang Ter-chang (Tpe), Rick Gibson (Can)
70 John Daly (USA), Zhang Lian-wei (Chn), Colin Montgomerie (Sco), Dean Alaban (Aus), Kyi Hla Han (Myn), Jyoti Randhawa (Ind), Craig Kamps (Rsa), Ted Purdy (USA), Rafael Ponce (Ecu)
71 Paul McGinley (Irl), Andrew Coltart (Sco), Simon Yates (Sco)
73 Michael Campbell (Nzl), Carlos Franco (Par)