Triple Crown Heavyweight Championship
On September 28, Shiozaki defeated Suwama in the finals to win the 2014 Ōdō Tournament and earn another shot at the Triple Crown Heavyweight Championship. Shiozaki received his title shot on October 29, but was defeated by Joe Doering. Shiozaki received a rematch with Doering on January 3, 2015, and defeated him to win the Triple Crown Heavyweight Championship for the first time. He made his first successful title defense on February 7 against Zeus. His second successful defense took place on March 27 against Xceed stablemate Kento Miyahara. On May 6, Shiozaki and Miyahara defeated Yutaka Yoshie and Shiozaki's next Triple Crown Heavyweight Championship challenger Akebono to become the new World Tag Team Champions. By simultaneously holding the Triple Crown Heavyweight Championship and the World Tag Team Championship, Shiozaki became the seventh "Quintuple Crown Champion". On May 21, Shiozaki lost the Triple Crown Heavyweight Championship to Akebono in his third defense. On September 28, it was announced that Shiozaki was leaving AJPW the following month and becoming a freelancer. The announcement also led to Shiozaki and Miyahara vacating the World Tag Team Championship. Shiozaki's final AJPW match took place on October 4, when he and Miyahara defeated Jun Akiyama and Yoshinobu Kanemaru in a tag team match.