Seiko Iseki had too much power for Olympic teammate Koji Matsushita on Sunday, winning the men's final 3-1 to clinch his third singles title at the national table tennis championships.

Iseki kept Matsushita on the back foot with his hard-hit forehand and backhand drives at Nagoya Sports Complex in a 22-20, 18-21, 21-14, 21-17 victory.

Meanwhile, sisters Miyuki and Yuka Nishi defeated Naomi Yotsumoto and Mikie Takahashi in two straight sets to win their third straight women's doubles crown.