Kosuke Hagino rewrote his own 200-meter individual medley national record Saturday to claim a fourth berth at this summer's Rio Olympics and round off a dominant week at the national championships.

Hagino blazed home in 1 minute, 55.07 seconds to chop 0.26 seconds off his previous record, beating second-place Hiromasa Fujimori by 2.50 seconds and finishing inside the Rio qualifying mark by almost three full seconds.

The national championships this year double as qualifiers for the Rio Games.