Kazuhiko Hosokawa shot a 7-under-par 64 to take a one-stroke lead over Tadahiro Takayama and Thammanoon Srirot of Thailand after the first round of the Under Armour KBC Augusta on Thursday.

Hosokawa, who claimed his first title in four years with a playoff victory at last month's Tour Championship, eagled the par-5 sixth hole in a front-nine 30 to highlight his round at the par-71 Keya Golf Club in Fukuoka Prefecture.