- Submitting Anderson Silva via Flying Scissor Heel Hook at PRIDE Shockwave 2004.
- His 2 battles against Ryuta Sakurai for the DEEP MW Championship. Chonan won both fights.
- His craftiness. Chonan has won 3 fights by TKO due to cuts.
- His wins over Carlos Newton and Joey Villasenor at PRIDE Bushido 5 & 11.