Jun Mizutani overwhelmed Chinese-born Kazuhiro Chan four games to none in the men's singles final at the national championships on Sunday, making him the first man to win the event five times in a row.

The 21-year-old Mizutani, who has risen to a career-high seventh in the world rankings, won 11-7, 11-8, 11-5, 11-3 at Tokyo Metropolitan Gymnasium.

Earlier in the day, he beat up-and-coming 16-year-old Koki Niwa four games to none in the quarterfinals and Taku Takakiwa four games to one in the semis.

Mizutani broke the previous tie for consecutive men's singles titles with Kiyoshi Saito and Norikazu Fujii. Saito won the titles from 1982-85 and Fujii from 1946-1949.

"I knew almost everyone was expecting me to win this singles title, and I wanted to do so in dominant fashion," Mizutani said.

"It was disappointing to lose in the doubles final yesterday, so I wanted to get revenge on (doubles champion) Niwa in my first match of the day. I tried my very hardest on that one."