Career
A professional competitor since 2001, Ishida also participated in the Yarennoka event in the Saitama Super Arena in Japan. Originally from the Ibaraki Prefecture in Japan, Ishida was a talented wrestler, ranking in the top five nationally during high school for the Greco-Roman category. Early career
Ishida"s professional debut was on July 6, 2001 at Shooto: To the Top 6 against Daisuke Sugie where he lost via unanimous decision.
PRIDE
At PRIDE Shockwave 2006 he lost to Takanori Gomi in a non-title fight on December 31, 2006, his first defeat in that organization.
Yarennoka! Ishida"s perhaps most notable victory to date was a unanimous decision victory over then-undefeated future Strikeforce Lightweight Champion Gilbert Melendez at Yarennoka!. Strikeforce
Ishida made his United States mainland debut at Strikeforce: Playboy Mansion defeating Justin Wilcox by armbar.
DREAM
On March 15, 2008, Ishida competed in the opening round of the DREAM Lightweight Grand Prix, defeating Korean judoka Jung Bu-Kyung. He proceeded to lose to Caol Uno in the quarter-finals at DREAM 3 via rearnaked choke submission.
Ishida then defeated Daisuke Nakamura at DREAM 7.
Following matches in Shooto and Strikeforce, Ishida returned to the organization at DREAM 15, where he defeated Daiki Hata. On July 6, 2012 Ishida announced that he has retired from mixed martial arts competition.