His last fight to date was in 2008, with a professional mixed martial arts career spanning ten years.
He also briefly competed in shoot style professional wrestling, exclusively for Kiyoshi Tamura's U-STYLE promotion.
Namekawa made his debut for RINGS on June 20, 1998, against Minoru Toyonaga, the bout ended in a draw.
[1] On March 7, 1999, Namekawa had their third and final match, this time in Milton Keynes, England, at Night of the Samurai 3.
[2] During the rest of 1999, Namekawa picked up victories over fighters, Troy Ittensohn, Ryuki Ueyama, Sara Umer and Minoru Toyonaga.
[2] In his second outing in the Deep organisation, Namekawa beat Kenji Akiyama by TKO, Jong Hyuk Moon by submission and lost to Ryuta Sakurai.
[2] Namekawa beat Peter Iryaku at VFX - Vale Tudo Fighters Mexico before losing to Cyrille Diabate in a rematch on July 30, 2006.
Drawing with Fabiano Capoani and defeating Yuji Sakuragi, Hamish Robertson, Katsuhisa Fujii, Carlos Toyota and Claudio Silva.