Tatsuya Mizuno is a mixed martial artist.
He most recently faced feared kickboxing striker Melvin Manhoef in the first round of Dream's four-man light-heavyweight grand prix. After an exciting back-and-forth boxing and jiu jitsu contest, Mizuno managed to pin down a winded Manhoef to secure a kimura, earning the upset victory.
Mizuno advanced to face former Strikeforce light-heavyweight champion and fellow finalist Gegard Mousasi in a fight to crown the first-ever Dream light-heavyweight champion. Mizuno was defeated by Mousasi via rear-naked choke six minutes into the first round.
After recovering, Mizuno returned to fight in Dream against Strikeforce veteran and Dream newcomer Trevor Prangley. He defeated Prangley via a first-round TKO. The victory was a considerable upset. UFC middleweight contender Yushin Okami was present in Japan as one of Mizuno's cornermen.
Mizuno next made his Pro-Elite debut against Ilima Maiava in Honolulu, Hawaii. Mizuno defeated Maiava via second round arm triangle choke submission.
Mizuno then made his ONE FC debut against UFC/Strikeforce veteran and fellow newcomer Renato Sobral, losing very quickly via armbar submission.
- Thiago Silva vs. Tatsuya Mizuno - Thiago Silva came in undefeated. The fight was the last fight before Silva entered the UFC. The fight was for Pancrase.
- Mirko Filipovic vs. Tatsuya Mizuno - The fight was Mirko Filipovic's Dream debut, and it was hailed as a one-sided beatdown. It delivered just that.
- Melvin Manhoef vs. Tatsuya Mizuno - The fight was in the opening round of the Dream light-heavyweight grand prix and it was a fairly surprising upset.
- Gegard Mousasi vs. Tatsuya Mizuno - The fight was for the inaugaral Dream light-heavyweight championship, and it was the final round of the Dream light-heavyweight tournament.
- Sergei Kharitonov vs. Tatsuya Mizuno
- Tatsuya Mizuno vs. Trevor Prangley - The fight was Trevor Prangley's Dream debut.
- Renato Sobral vs. Tatsuya Mizuno - The fight was the ONE FC debut of both men.