 On February 17, 2006 he defeated Kenichiro Togashi to become the Shooto Pacific Rim Welterweight Champion.Ishida won his first four fights in the PRIDE organization, defeating fighters such as Marcus Aurelio and Cristiano Marcello.At PRIDE Shockwave 2006 he lost to Takanori Gomi in a non-title fight on December 31, 2006, his first defeat in that organization.