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.
Following his recovery, he began wrestling matches against the biggest names of the company and despite losing to them, he would put forth a valiant effort against them, similar to how Kobashi competed in All Japan Pro Wrestling.
After Kobashi was forced out of action due to cancer, Shiozaki teamed briefly with Tamon Honda but was again defeated by Noah's top wrestlers until he finally broke his losing streak by pinning Ricky Marvin.

In late April 2007, Shiozaki represented Noah in the prestigious King of Europe Cup.
He defeated Real Quality Wrestling representative Martin Stone in the first round before falling to Pro Wrestling Guerrilla representative Davey Richards in the quarterfinals.

Shiozaki returned to Noah in mid-2009 and gained a significant push as Mitsuharu Misawa's new tag team partner.
They soon won the Global Tag League in May and thus became the top contenders to the GHC Tag Team Championship.
During their title match on June 13 against champions Akitoshi Saito and Bison Smith, Misawa suffered a cervical spinal cord trauma 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 Akitos
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. Following his recovery, he began wrestling matches against the biggest names of the company and despite losing to them, he would put forth a valiant effort against them, similar to how Kobashi competed in All Japan Pro Wrestling. After Kobashi was forced out of action due to cancer, Shiozaki teamed briefly with Tamon Honda but was again defeated by Noah's top wrestlers until he finally broke his losing streak by pinning Ricky Marvin.
In late April 2007, Shiozaki represented Noah in the prestigious King of Europe Cup. He defeated Real Quality Wrestling representative Martin Stone in the first round before falling to Pro Wrestling Guerrilla representative Davey Richards in the quarterfinals.
Shiozaki returned to Noah in mid-2009 and gained a significant push as Mitsuharu Misawa's new tag team partner. They soon won the Global Tag League in May and thus became the top contenders to the GHC Tag Team Championship. During their title match on June 13 against champions Akitoshi Saito and Bison Smith, Misawa suffered a cervical spinal cord trauma 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 Akitos
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