Krush 172 takes place on March 30, 2025, at Korakuen Hall in Tokyo, Japan.

K-1 WORLD MAX 2025 -70kg World Championship Tournament Opening Round will be held in Tokyo, Yoyogi! 16 elite fighters from 15 countries battle for supremacy! All eyes are on the showdown between reigning K-1 WORLD GP Super Welterweight Champion Ouyan Feng and the 'Relentless Last Man', Kacper Muszyński. In addition to the tournament, "HERO'S" will be making a comeback for the first time in nearly 20 years! Be sure to keep an eye out to see what kind of impact these two MMA matches will make in the K-1 ring.