Masakazu Imanari is a fighter who has fought at lightweight but currently competes at bantamweight.
He most recently faced Hiroshi Nakamura, losing via unanimous decision in a non-title bout. He next competed in the first-ever Dream bantamweight grand prix. He faced Keisuke Fujiwara in the opening round. He defeated Fujiwara via a relatively close decision.
Imanari moved on to the semifinals later that night. He defeated Kenji Osawa via signature heel hook submission in the bout's second round. With the victory, Imanari moved on to the finals to face Hideo Tokoro to crown the first-ever Dream bantamweight champion.
At this time, Imanari vacated the Deep bantamweight belt that he had held since 2008. Tokoro later defeated Imanari via decision to win the all-Japan tournament. He next faced Abel Cullum in the quarterfinals of the Dream world bantamweight grand prix, defeating Cullum via third-round armbar submission to move on to the semifinals.
Imanari was set to face WEC and UFC veteran Antonio Banuelos in the semifinals.
- Masakazu Imanari vs. Danny Batten
- Dokonjonosuke Mishima vs. Masakazu Imanari 1 - The fight was Imanari's first loss.
- Masakazu Imanari vs. Jorge Gurgel - Imanari broke Jorge Gurgel's knee badly during the fight. The fight was in the opening round of the ZST 2003 lightweight grand prix. The fight was also Gurgel's first loss.
- Marcus Aurelio vs. Masakazu Imanari - The fight was in the semifinals of the ZST 2003 lightweight grand prix.
- Masakazu Imanari vs. Mike Brown - Imanari broke Mike Brown's knee in the fight.
- Masakazu Imanari vs. Takeshi Yamazaki - The fight was for the DEEP featherweight title with Imanari defending.
- Masakazu Imanari vs. Hiroyuki Abe
- Masakazu Imanari vs. Jean Silva - The fight was for the Cage Rage featherweight title with Imanari defending.
- Masakazu Imanari vs. Hiroshi Umemura - The fight was for the vacant DEEP bantamweight championship.