Ryo Ishikawa all but ensured himself of becoming the youngest golfer in history to earn ¥100 million in prize money on the Japanese men's tour after making the cut in the second round of the Casio World Open on Friday.

The 17-year-old Ishikawa followed an opening round 70 with a 71 for a share of 14th place at 3-under, stealing the thunder from Komei Oda, who fired a sizzling 5-under-par 67 to open up a four-shot lead on 11-under 133.

Oda moved a step closer to his first career title when he picked up an eagle and five birdies against a pair of bogeys, at Kochi Kuroshio Country Club, where security has been increased in the wake of last week's bomb scare.