 In March 2001, Shiga entered the tournament to crown the first GHC Heavyweight Champion, Shiga defeated Too Cold Scorpio in the first round but lost to Yoshihiro Takayama in the quarterfinals.In October 2001, Shiga entered a tournament to crown the first GHC Tag Team Championship as he teamed with Takuma Sano but the pair lost in the first round to Takao Omori and Shinjiro Ohtani.By the end of 2001, Shiga teamed with Kanemaru to win a One Night Tag Team Tournament.