A professional competitor from 2001 until 2013, he was the 2006 PRIDE Welterweight (183 lbs) Grand Prix Champion, and also competed in Sengoku, Pancrase, DEEP, and Strikeforce.
He later added kickboxing training in the Katori Dojo, and was finally introduced to mixed martial arts by Sanae Kikuta as part of his Grabaka team.
En route to the 2006 PRIDE Welterweight Grand Prix finals he defeated Phil Baroni and Dan Henderson in a non-title bout.
[3] After reviewing video of the knockout, the Yarennoka executive committee agreed; the official result was then changed to "no contest.
Misaki recently lost to K-1 fighter Melvin Manhoef via a controversial[citation needed] stoppage at Dynamite!!
[citation needed] Misaki fought and beat Kazuhiro Nakamura at Sengoku 9, however he did not receive pay, and went on immediate indefinite suspension after the fight.