Tomohiro Kondo pulled away to a four-shot victory at the Tsuruya Open on Sunday, while Ryo Ishikawa never found himself in contention and tied for 15th.
Kondo parred all four holes of his suspended third round to stay in the lead and went on to shoot a 5-under 66 for a 19-under 265 total at Yamanohara Golf Club.
The 33-year-old picked up his fifth career JGTO Tour win and first since the 2008 Crowns, along with the winner's check of 24 million.
"I was playing really well all week, so I was confident and had no worries," Kondo said. "Three years without a win felt like a long, long time, especially because I had won at least one tournament a year between 2006 and 2008."