Daisuke Maruyama took a huge stride toward his first tour title after a flurry of birdies on the back nine gave him a 6-under-par 65 and a seven-stroke lead at the Fujisankei Classic on Saturday.
Starting the day in a tie for second, Maruyama leapfrogged overnight leader I.J. Chang and closed on a three-day total of 13-under 200.
South Korean Chang, whose hole-in-one sent him top of the leaderboard Friday, struggled with bogey-riddled 73 while Craig Jones of Australia was another shot back tied with Shingo Katayama and Takuya Taniguchi on 208.
Maruyama made his first birdie on the third and moved clear of faltering Chang, who dropped three shots through his first seven holes.