Pro Wrestling Noah (2003–2012) Shiozaki entered the
Pro Wrestling Noah dojo in 2003 and according to the commentators from the event Universal Uproar, was the only man to graduate in his class as well as being the youngest wrestler on the roster. Following his debut, Shiozaki became a protégé of the legendary
Kenta Kobashi. Shiozaki and Kobashi formed a very successful
tag team and the biggest match the two had as a team was a losing effort against
Kensuke Sasaki and his own protégé,
Katsuhiko Nakajima. The match reached critical acclaim, being given a near-perfect rating from the
Wrestling Observer Newsletter. In the beginning of 2006, Shiozaki fractured his jaw against
Kenta. during the match after receiving a
belly to back suplex from Saito. After Misawa remained motionless following the suplex, officials quickly tended to him before he was taken to a hospital, where he died later on. On June 14, reigning GHC Heavyweight Champion
Jun Akiyama was forced to vacate the title due to herniated discs in his back. As a result, Shiozaki was nominated by Akiyama to wrestle for the title against the number one contender
Takeshi Rikio. After a hard-fought twenty-minute match, Shiozaki managed to defeat Rikio to become the new GHC Heavyweight Champion. He then went on to successfully defend his title for the first time on September 27 against
Akitoshi Saito. However his second title defense was unsuccessful as on December 6, Shiozaki lost the World Heavyweight title to
Takashi Sugiura on the last date of the 2009 Winter Navigation tour. On May 23, 2010 Shiozaki teamed up with
Atsushi Aoki to defeat
Takeshi Morishima and
Taiji Ishimori to win the
AAA World Tag Team Championship during Pro Wrestling Noah's Navigation with Breeze show in
Niigata, Niigata,
Japan. As a result of the victory, Shiozaki and Aoki were scheduled to defend the title during
AAA's
Triplemania XVIII show. At TripleMania, Shiozaki and Aoki were the first team eliminated when Joe Lider pinned Shiozaki. The match and the title were ultimately won by Los Maniacos (Silver Cain and Último Gladiador). In August 2010 Shiozaki took part in
New Japan Pro-Wrestling's
2010 G1 Climax tournament, where he won four out of his seven-round robin stage matches, only to narrowly miss the finals of the tournament after wrestling
Shinsuke Nakamura to a 30-minute time limit draw on the final day of the tournament. The draw with Nakamura led to a No Time Limit match at a Pro Wrestling Noah show on August 22, where Shiozaki was victorious. Shiozaki and Nakamura had their third match on January 4, 2011, at New Japan's
Wrestle Kingdom V in Tokyo Dome, where Nakamura was victorious. Shiozaki regained the GHC Heavyweight Title by defeating Takashi Sugiura on July 10, 2011. On January 4, 2012, Shiozaki returned to New Japan at
Wrestle Kingdom VI in Tokyo Dome, where he and
Naomichi Marufuji defeated
CHAOS Top Team (Shinsuke Nakamura and
Toru Yano) in a tag team match. On January 22, Shiozaki lost the GHC Heavyweight Championship to Takeshi Morishima. On October 26, Shiozaki and Akitoshi Saito defeated Kenta and
Maybach Taniguchi to win the GHC Tag Team Championship. On December 3, 2012, it was reported that Shiozaki had threatened to not re-sign with Noah after his contract expires in January 2013, when the promotion decided to release Kenta Kobashi from his contract. Six days later, Shiozaki and Saito lost the GHC Tag Team Championship to
Naomichi Marufuji and
Takashi Sugiura. On December 19, Noah confirmed that Shiozaki would be leaving the promotion following December 24. On December 24, Shiozaki defeated Taiji Ishimori in his final Noah match.
Foreign excursions (2006–2009) Shiozaki made his
Ring of Honor (ROH) debut during ROH's August 2006 tour of England. In July 2007, he wrestled
Bryan Danielson in ROH's debut show in Tokyo, Japan. He unsuccessfully wrestled
ROH World Champion Nigel McGuinness in a title match on a Noah show in January 2008 before joining the ROH roster as a regular during February's event Eye of the Storm. on September 5, Shiozaki began wrestling in
Harley Race's
World League Wrestling, where he also underwent further training under Race. On March 17, Shiozaki and Akiyama defeated Get Wild (
Manabu Soya and
Takao Omori) to win the
World Tag Team Championship. On May 11, Shiozaki made a one-night return to Noah to take part in Kenta Kobashi's retirement match at
Final Burning in Budokan, where he, Kenta, Maybach Taniguchi and Yoshinobu Kanemaru were defeated by Kobashi, Jun Akiyama,
Keiji Mutoh and Kensuke Sasaki. On July 5, following a mass exodus led by Keiji Mutoh, it was announced that Shiozaki, along with the rest of Burning, had signed an exclusive contract with All Japan. Afterwards, Shiozaki set his sights on the
Triple Crown Heavyweight Championship, defeating reigning champion
Suwama in a non-title
Two Out of Three Falls match on July 14, the launching day of the post-Mutoh All Japan. Shiozaki received his shot at the title on August 25, but was defeated by Suwama. In September, Shiozaki made it to the finals of the
2013 Ōdō Tournament, after wins over Burning stablemates Kotaro Suzuki and Yoshinobu Kanemaru as well as top World Tag Team Championship contender
Joe Doering, before losing to
Akebono. On October 22, Shiozaki and Akiyama lost the World Tag Team Championship to
Evolution (
Joe Doering and Suwama). The following day, Shiozaki announced that he wanted to leave Burning in order to win the Triple Crown. On November 18, Shiozaki announced that he was forming a new stable named "
Xceed", revealing
Kenso as the first member of the group. However, in the stable's first match three days later, Kenso turned on Shiozaki and aligned himself with
Bambi Killer and
D'Lo Brown. Shiozaki was then saved by Atsushi Aoki,
Kento Miyahara and Kotaro Suzuki, who became the newest members of Xceed. In December, Shiozaki and Miyahara made it to the finals of the
2013 World's Strongest Tag Determination League, before losing to Evolution (Joe Doering and Suwama). On February 23, 2014, Shiozaki received another shot at the Triple Crown Heavyweight Championship, but was defeated by the defending champion, Akebono. In April, Shiozaki participated in the 2014
Champion Carnival, where he was leading his block before suffering a broken thumb, which forced him to pull out of the tournament and forfeit his final round-robin match with Jun Akiyama. 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.
Return to Pro Wrestling Noah (2015–2025) GHC Heavyweight Championship reign (2015–2016) On November 20, 2015, Shiozaki returned to Noah, announcing he wanted to again wrestle in his original home promotion. His interview segment was interrupted by
Minoru Suzuki, who offered him a spot in his
Suzuki-gun stable. On November 26, Shiozaki defeated
Mitsuhiro Kitamiya in his Noah return match. When Takashi Sugiura turned on Noah and joined Suzuki-gun on December 23, Shiozaki announced that he wanted to join the promotion in its battle with Suzuki-gun. Naomichi Marufuji, however, turned his offer down. On January 31, 2016, Shiozaki's tag team partner Yoshinobu Kanemaru turned on him and joined Suzuki-gun. At the end of the show, Marufuji, after losing the GHC Heavyweight Championship to Sugiura, finally accepted Shiozaki's help in the war between Noah and Suzuki-gun. On May 28, Shiozaki defeated Sugiura to win the GHC Heavyweight Championship for the third time. Shiozaki made his first successful title defense on June 12 against Suzuki-gun member
Shelton X Benjamin. The following day, Shiozaki officially re-signed with Noah, ending his days as a freelancer. On July 30, Shiozaki lost the GHC Heavyweight Championship back to Sugiura.
GHC Tag Team Championship pursuits (2016–2018) On December 2, Shiozaki and Maybach Taniguchi defeated Davey Boy Smith Jr. and Lance Archer to win GHC Tag Team Championship. They lost the titles to
Kenoh and
Masa Kitamiya on January 21, 2017. On August 26 Shiozaki and
Atsushi Kotoge defeated Maybach Taniguchi and Naomichi Marufuji to win GHC Tag Team Championship. They lost the titles to
Muhammad Yone and
Quiet Storm on October 1. In November, Shiozaki won his block in the 2017
Global League Tournament with a record of five wins and one loss and one draw, advancing to the finals. On November 19, Shiozaki was defeated in the final by
Kenoh. On January 6, 2018 Shiozaki saved
Kaito Kiyomiya from an assault by Kenoh and Takashi Sugiura, the two would form a partnership, later dubbed as "GO-KAI". From March until April, Kiyomiya and Shiozaki took part of the
Global Tag League, finishing the tournament with three wins, one loss and three draws, advancing to the finals. In the finals, Kiyomiya and Shiozaki defeated Kenoh and Sugiura to win the tournament. On April 29 at Great Voyage in Niigata, Kiyomiya and Shiozaki defeated
The Aggression (
Masa Kitamiya and
Katsuhiko Nakajima) to win the
GHC Tag Team Championship. They lost the titles back to The Aggression on May 29. In November, Shiozaki took part in the
2018 Global League, where he finished the tournament with four wins and three losses, failing to advance to the finals of the tournament.
AXIZ (2018–2020) In December 2018, Shiozaki and Katsuhiko Nakajima formed a team, and the duo took part in a tournament for the vacant GHC Tag Team Championship. On December 7, Shiozaki and Nakajima defeated
Kenoh and
Masa Kitamiya in a tournament final to win the vacant GHC Tag Team Championship. Afterwards, Shiozaki and Nakajima were challenged by Hooligans (
Maybach Taniguchi and
Yuji Hino) to a match for their titles. On December 16 at The Great Voyage 2018 in Yokohama vol.2, Shiozaki and Nakajima lost the GHC Tag Team Championship to Hooligans. On January 6, 2019, Shiozaki and Nakajima received their rematch for GHC Tag Team Championship losing to Taniguchi and Hino, after their Hooligans stablemates interfered in the match. Later in January, Shiozaki and Nakajima named their team "AXIZ". Afterwards, on February 12, AXIZ faced GHC Tag Team Champions 50 Funky Powers (
Muhammad Yone and
Quiet Storm) in a non-title match. Nakajima would scored the victory for AXIZ, after Nakajima pinned Storm. After
Atsushi Kotoge and
Eddie Edwards couldn't challenge for the GHC Tag Team Championship, due to Kotoge's shoulder injury, Noah announced AXIZ as the next challengers to the GHC Tag Team Championship. On February 24, 2019, AXIZ defeated 50 Funky Powers (Muhammad Yone and Quiet Storm) to win the GHC Tag Team Championship for the second time. From April 7 until April 30, AXIZ took part in the
2019 Global Tag League, finishing the tournament with a record of five wins, one loss, and one draw, advancing to the finals of the tournament. On May 4, AXIZ was defeated in the finals by
Sugiura-gun (
Takashi Sugiura and
Kazma Sakamoto). On June 13, AXIZ lost the GHC Tag Team Championship to Sugiura-gun, before defeating them in rematch on June 27, to win the GHC Tag Team Championship for the record-breaking third time. In December, Shiozaki and Nakajima celebrated their 15th-anniversary debut match, leading on December 3, Shiozaki defeating Nakajima in their anniversary debut match. Afterwards, Shiozaki challenged Kaito Kiyomiya to a match for the GHC Heavyweight Championship on January 4, 2020. Things started civilly between the champion and the challenger. However, Kiyomiya began showing an egotistical attitude leading to the match, stating that would take the "leading role" at Noah's 20th anniversary year in 2020. Shiozaki didn't appreciate his attitude, leading the two to be separated twice after their match on December 7. On December 12, AXIZ teamed with
Hitoshi Kumano in a winning effort against Kiyomiya, Shuhei Taniguchi, and Masao Inoue, after Shiozaki scored the win for his team, after pinning Kiyomiya. Afterwards, Kiyomiya found the loss regrettable and his arrogance began growing. In their final confrontation, AXIZ defeated Kiyomiya and Taniguchi, with Shiozaki scoring the win for his team, pinning Kiyomiya for the second time. After the match, Shiozaki loomed over Kiyomiya and placed a finger very firmly on his chest before leaving the ring. On January 4, 2020, at New Sunrise, Shiozaki defeated Kaito Kiyomiya to win the GHC Heavyweight Championship. The following day at Reboot, AXIZ lost the GHC Tag Team Championship to
Masaaki Mochizuki and
Naomichi Marufuji. In March, AXIZ took part in the
2020 Global Tag League, making to their second consecutive Global Tag League final by winning their block in the 2020 tournament with a record of two wins and one loss. On April 18, they were defeated in the finals of the tournament by
Sugiura-gun International (Hijo de Dr. Wagner Jr. and
Rene Dupree). On August 6, on the second night of Departure, after Shiozaki successfully defended the GHC Heavyweight Championship against
Naomichi Marufuji, Kenoh challenged Shiozaki to a double-title match for the GHC National and Heavyweight Championships, stating that there could only be one strong champion in Noah. On August 10 at NOAH The Chronicle Vol. 3, Shiozaki faced Kenoh in a 60-minute time limit draw to retain the GHC Heavyweight Championship and unsuccessfully challenging Kenoh for the GHC National Championship. On August 20, AXIZ faced Sugiura-gun (
Kazushi Sakuraba and Takashi Sugiura) in a losing effort for the vacant GHC Tag Team Championship. Afterwards, Nakajima turned on Shiozaki in order to join KONGOH, effectively disbanding AXIZ. From September 18 and October 11, Shiozaki took part in the
2020 N-1 Victory, finishing the tournament with a record of two wins, and three losses, failing to advance to the finals, losing to Kaito Kiyomiya in their head-to-head match. On December 6 at Noah the Best 2020, after Shiozaki successfully defended the GHC Heavyweight Championship against Takashi Sugiura,
Keiji Mutoh challenged to him to a title match at Destination, which Shiozaki accepted. On February 12, 2021 at Destination, Shiozaki lost the GHC Heavyweight Championship to Keiji Mutoh, in his sixth title defense, ending his reign at 405 days. Their match was named the Match of the Year by
Tokyo Sports, marking the first time in ten years, that a match from NOAH received the award.
Record-breaking GHC Heavyweight Champion (2021–2025) Shortly after losing the title, on March 15, it was announced that Shiozaki would undergo surgery, after dislocating his right biceps tendon, forcing him to be sidelined for eight months. He made his return on November 28 at Noah the Best 2021, challenging his former AXIZ teammate Katsuhiko Nakajima to a title match for the GHC Heavyweight Championship on January 1, at Noah The New Year. On December 27, following a victory in a ten-man tag team match, where Nakajima pinned Shiozaki, he stated that if lost to him at NOAH The New Year, Shiozaki should never repeat his catchphrase "I am Noah" again. At a press conference the following day, Shiozaki agreed to Nakajima's condition of never using his catchphrase "I am Noah" again, on the condition that if he won, Nakajima would be forced to reunite AXIZ with him. At the event, Shiozaki unsuccessfully challenged Nakajima for the GHC Heavyweight Championship, forcing Shiozaki to abandon his "I am Noah" catchphrase. After failed to regain the GHC Heavyweight Championship, Shiozaki underwent a 4 match trial series to challenge for the GHC Heavyweight Championship, but lost all 4 matches. After defeating
Manabu Soya on March 13 at Great Voyage in Yokohama, Shiozaki began his true road to the GHC Heavyweight Championship. On March 23, after avenging his loss to Nakajima, Shiozaki called out
Kazuyuki Fujita, challenging him to a title match for GHC Heavyweight Championship at Majestic, which he accepted after mocking Shiozaki's catchphrase. The title match would be turned to a match for the vacant championship, after Fujita contracted COVID-19. At the event, on April 30, Shiozaki defeated Kaito Kiyomiya to win the GHC Heavyweight Championship for the record-breaking fifth time. He lost the title to
Satoshi Kojima on June 12 at CyberFight Festival. In August, Shiozaki took part in the
2022 N-1 Victory, finishing the tournament, with a record of four wins and three losses, failing to advance to the finals. The following month, Shiozaki was sidelined with an shoulder injury, which led to him return on April 16 at Green Journey in Sendai, announcing the would make his in-ring return on May 4 at
Majestic. At Majestic, Shiozaki teamed with Kaito Kiyomiya and
Yoshiki Inamura in a losing effort to KONGOH (Kenoh, Katsuhiko Nakajima and Manabu Soya). Afterwards, Nakajima decided to leave KONGOH to reform AXIZ with Shiozaki, which he accepted. AXIZ made their return match on May 14, losing to Kenoh and Soya. After a draw between Nakajima and Kenoh on May 31, Shiozaki challenged Kenoh to a match, which he lost on June 22. In August, Shiozaki took part in the
2023 N-1 Victory, finishing the tournament with a record of four wins, two losses, and a draw against Manabu Soya in their head-to-head match, meaning that both finished leveled on points in their block. This led to NOAH setting up a rematch between them to decide, who would advance to the finals, which Shiozaki won on August 27. On September 3, Shiozaki defeated Kenoh in the finals to win the N-1 Victory. On September 24 at
Grand Ship In Nagoya, Shiozaki unsuccessfully challenged
Jake Lee for the GHC Heavyweight Championship. On September 30, 2025, it was announced that Shiozaki was leaving NOAH after he decided not to renew his contract, ending his 10 year tenure with the company.
Return to AJPW (2025–present) On October 11, 2025, Shiozaki returned to AJPW after ten years, where he was revealed as the newest member of the HAVOC
stable. Shiozaki then teamed with stablemate
Shotaro Ashino to face
Kento Miyahara and
Hideki Suzuki, which ended in a disqualification victory after Miyahara attacked Shiozaki with a steel chair. After the match, Shiozaki proceeded to challenge Miyahara to a match for the
Triple Crown Heavyweight Championship. On January 2, 2026, Shiozaki announced that he had officially signed with AJPW, becoming a full-time member of the roster. == Personal life ==