The second round of the men's golf domestic tour was held in Hokkaido, and Scott Vincent of Zimbabwe increased his score by nine and jumped from 68th to the top.
Vincent lined up with South Africa's Jave Kluger on the 17th, with nine birdies and a total of nine unders without bogies, up two scores from the lead.
Eight people, including Azuma Yano and Mirai Horikawa, who both increased their scores by five, are in third place with a one-stroke difference, and it is a mixed battle.
Rikuya Hoshino, who is the No. 1 prize money representative of the Tokyo Olympics, is 17th with a total of 6 under, and Ryo Ishikawa is 24th with a total of 5 under.