Luke Donald managed an even-par 71 on Saturday and remained four strokes clear of the field after three rounds of the Dunlop Phoenix.
Donald finished 54 holes at 13-under-par 200 at Phoenix Country Club.
Shunsuke Sonoda also shot 71 and was joined in second place by Brendan Jones (67). They stand at minus-9, while Hirohito Koizumi (68) and Hiroyuki Fujita (70) share fourth at 8-under 205.
Donald traded a bogey for a birdie from the second. He moved to 14-under with a birdie at the eighth. Around the turn, Donald tripped to a bogey on the 11th, but came right back with a birdie on No. 12. He stumbled to a bogey at 17 to slip back to even-par for his round.
Shingo Katayama (68) is one of three players tied for sixth at minus-7. Alvaro Quiros shares 10th at 5-under 208 after posting 69 for the second straight day.