A professional competitor between 2005 and 2014, Itabashi is the former RISE and Krush super featherweight champion.
Itabashi made his professional debut against Daisuke Urata at TRIAL LEAGUE.1 on March 20, 2005.
[1] Itabashi faced Junichi Kato in the second TRIAL LEAGUE event, held on June 26, 2005.
[4] After successfully rebounding from his loss, Itabashi participated faced Yusuke Sugawara in the quarterfinals of the one-day RISE super featherweight tournament.
Itabashi was then booked to face Akihiro Kuroda at J-NETWORK "Let's Kick with J 1st" on February 29, 2008.
[7] After amassing an 8–2–2 record, Itabashi would go on a four fight winning streak, before challenging for a title.
Itabashi first beat Fire Hiroshi by majority decision at RISE 44 on March 30, 2008.
Itabashi extended his winning streak to three straight fights at RISE 49 on August 30, 2008, with a third-round knockout of Tomoya Miyashita.
Itabashi faced Tomoaki Suehiro at RISE 51 on November 30, 2008, in his final fight of the year.
Itabashi challenged the reigning Krush Super Featherweight champion Hirotaka Urabe at Krush.30 on August 11, 2013.
He first beat Edoardo Tocci by a first-round knockout at Krush.34 on November 10, 2013,[20] which he followed up with a unanimous decision victory against Sho Ogawa at Krush.38 on February 14, 2014.
[22] Itabashi faced Tihomir Mitev at REBELS 30 on September 28, 2014, in what was the final professional kickboxing bout of his career.