Two-time world champion Daiya Seto edged Rio Olympic winner Kosuke Hagino in the men's 400-meter individual medley at the national swimming championships Thursday.

Seto beat his good friend and the defending national champion Hagino by a hair at the wall, finishing in 4 minutes, 10.44 seconds — 0.01 seconds ahead of Hagino.

This meet doubles as a qualifier for this summer's world championships in Budapest.