is a Japanese racing driver competing in Super Taikyu for Mazda Spirit Racing.

Sakaguchi won the 2003 Korean Formula 1800 Series and has five Super Taikyu titles to his name, two in ST-3 and three in ST-2.

Career Sakaguchi made his single-seater debut in 1995, racing in both the JAF Formula 4 Okayama and Suzuka Series. After winning both the Okayama and Mine title the following year, Sakaguchi then raced part-time in various series until 2003, when he won the Korean Formula 1800 Series. Following that, Sakaguchi raced sporadically until 2008, when he partook in his first full-season in the series for Team Uematsu Nova, as well as finishing runner-up in the Super 2000 standings of the Superrace Championship in 2009 and third in Super 3800 the same year.

Racing mainly in Super Taikyu until 2012, Sakaguchi won the ST-2 class title three times, before making one-off appearances in the LMGTE class of the Asian Le Mans Series for AAI-Rstrada, and in the GT300 class of Super GT for Arnage Racing. Sakaguchi then returned to Asian Le Mans Series the following year, racing in all but one rounds and finishing third in the GT standings with a win at Inje. After competing in the last five rounds of the 2015 Super GT season for Pacific Racing Team in GT300, Sakaguchi raced part-time in the LMP3 class of the 2015–16 Asian Le Mans Series, finishing second at Buriram.

With Pacific Racing Team switching to the Porsche 911 for the 2016 season, Sakaguchi remained with the team alongside Hiroki Yoshida, scoring a best result of eighth at Motegi in his second season with the team. In early 2017, it was announced that EIcars Bentley TTO would join Super GT, with Sakaguchi and Yuji Ide as their drivers. In their first season in the series, the team scored a best result of 16th at Fuji. Sakaguchi remained with EIcars Bentley for the 2018 season, partnering Ide for the second season in a row. At the second Fuji round, Sakaguchi scored the team's best result by finishing 13th.

With the EIcars Bentley team ceasing operations in early 2019, Sakaguchi was left without a seat for most of the season, only making a one-off appearance for Team Mach at the fifth round of the season at Fuji as a third driver alongside Yuya Hiraki and Natsu Sakaguchi. Following his one-off outing for Team Mach in 2019, Sakaguchi returned to full-time competition in 2020, joining muta Racing INGING alongside Kazuto Kotaka. Sakaguchi scored two podiums, at Suzuka and at the season-finale at Fuji.

With Inging Motorsport merging their GT300 operations with Cars Tokai Dream28 ahead of the 2021 season, Sakaguchi joined Hiroki Katoh at the newly-rebranded muta Racing INGING. At Motegi, Sakaguchi scored his maiden win in GT300 by taking advantage of a mid-race safety car. In early 2022, Sakaguchi joined Arnage Racing, alongside Masaki Kano, Ryosei Yamashita and Takeshi Suehiro. Sakaguchi scored his only points of the season by finishing seventh at the fourth round of the season at Fuji.

After his stint at Arnage Racing, Sakaguchi returned to Pacific Racing Team after a seven year hiatus, alongside Liang Jiatong. At the second Suzuka round, Sakaguchi finished 11th, which would be the team's best result of the season. In 2024, Sakaguchi returned to Pacific Racing Team, teaming up with Yusuke Tomibayashi. Sakaguchi scored a best result of 12th at Fuji. Ahead of the 2025 season, it was announced that Sakaguchi would return to Pacific Racing Team, alongside the returning Tomibayashi and Yuta Fujiwara. Racing in all but two rounds, Sakaguchi scored a best result of fifth at Okayama en route to a 26th-place points finish.

In 2026, Sakaguchi left Pacific Racing Team as he primarily raced in the ST-Q class of Super Taikyu for Mazda Spirit Racing.

Personal life Sakaguchi is the uncle of 2020 Formula Regional Japan champion Sena Sakaguchi.

Racing record Racing career summary SeasonSeriesTeamRacesWinsPolesF/LapsPodiumsPointsPosition1995 JAF Formula 4 – Okayama Series 6th JAF Formula 4 – Suzuka Series 7th1996 JAF Formula 4 – Okayama Series 1st JAF Formula 4 – Mine Series 1st 1997 Japanese Formula 3 Championship Akiland Racing 5 0 0 0 0 0 NC 1998 Honda Civic Intercup Series 10th 2000 Formula Dream 4th 2003 Korean Formula 1800 Series 1st 2005 Suzuka 1000 km – RS Max Racing 1 1 0 0 1 1st 2006 Super GT – GT300 910 Racing With Team Ishimatsu 2 0 0 0 0 4 33rd2007 Super GT – GT300 Yokoyama Racing 2 0 0 0 0525th Team Uematsu 3 0 0 0 0 2008 Super GT – GT300 Team Uematsu Nova 9 0 0 0 0 24 17th2009 Superrace Championship – Super 2000 2nd Superrace Championship – Super 3800 3rd 2010 Super GT – GT300 Team RQS Motorsports 1 0 0 0 0 0 NC2012 Japanese Formula 3 Championship – National Class CMS Motor Sports Project 2 0 0 0 1 6 8th Super GT – GT300 JLOC 2 0 0 0 0 2 26th2013 Asian Le Mans Series – LMGTE AAI-Rstrada 1 0 0 0 1 18 3rd Super GT – GT300 Arnage Racing 2 0 0 0 0 4 24th 2014 Asian Le Mans Series – GT AAI-Rstrada 3 1 0 1 3 58 3rd 2015 Super GT – GT300 Pacific Racing Team 5 0 0 0 0 0 NC 2015–16 Asian Le Mans Series – LMP3 Team AAI 2 0 0 0 1 18 4th2016 Sepang 12 Hours – GT4 Muta Racing TWS RC350 1 0 1 0 1 N/A 2nd Super GT – GT300 Gulf Racing with Pacific 7 0 0 0 0 3 22nd 2016–17 Asian Le Mans Series – LMP3 FIST-Team AAI 1 0 0 0 0 0 17th2017 Super GT – GT300 EIcars Bentley TTO 6 0 0 0 0 0 NC Super Taikyu – ST-3 Tracy Sports 6 1 1 4 3 79‡ 4th‡2018 Super GT – GT300 EIcars Bentley 7 0 0 0 0 0 NC Super Taikyu – ST-3 Tracy Sports 6 2 1 3 5 130.5‡ 1st‡2019 Super GT – GT300 Team Mach 1 0 0 0 0 0 NC Super Taikyu – ST-3 Tracy Sports 5 2 0 0 5 112.5‡ 3rd‡2020 Super GT – GT300 Advics muta Racing INGING 8 0 2 0 2 34 9th Formula Regional Japanese Championship Field Motorsport 3 0 0 0 0 26 13th Super Taikyu – ST-1 Tracy Sports 2 0 0 0 2 50‡ 2nd‡2021 Super GT – GT300 muta Racing INGING 8 1 0 1 1 23 11th Super Taikyu – ST-1 Tracy Sports 6 2 2 1 6 124‡ 2nd‡2022 Super GT – GT300 Arnage Racing 8 0 0 0 0 4 29th Super Taikyu – ST-3 Tracy Sports 5 2 2 0 3 99‡ 3rd‡ Super Taikyu – ST-5 Mazda Spirit Racing 1 0 0 0 0 5.5‡ 13th‡ Toyota Gazoo Racing GR86/BRZ Cup T by Two CABANA Racing 6 0 0 0 0 1 23rd2023 Super GT – GT300 Pacific Racing Team 7 0 0 0 0 0 NC GT World Challenge Asia – GT4 Silver-Am Akiland Racing 6 0 1 1 5 94 3rd SRO Japan Cup – GT4 6 1 1 0 5 87 3rd Super Taikyu – ST-Q Mazda Spirit Racing 5 0 ?? ?? ?? 0‡ NC‡ Super Taikyu – ST-4 Over Drive 1 0 0 0 0 70‡ 5th‡2024 Super GT – GT300 Pacific Racing Team 8 0 0 0 0 0 NC Super Taikyu – ST-Q Mazda Spirit Racing 5 1 0 0 2 0‡ NC‡ SRO Japan Cup – GT4 Silver-Am K-tunes Racing 2 0 0 0 0 22 11th2025 Super GT – GT300 Pacific Racing Team 6 0 0 0 0 12.5 26th Super Taikyu – ST-Q Mazda Spirit Racing 3 0 0 0 0 0‡ NC‡ 2026 Super Taikyu – ST-Q Mazda Spirit Racing ‡ ‡Sources:

‡ Team standings

Complete Japanese Formula 3 results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team Engine Class 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DC Pts 1997 Akiland Racing Toyota SUZ19 TSU13 MINRet FUJ1 SUZ2Ret SUG SEN MOT FUJ2 SUZ312 NC 0 2012 CMS Motor Sports Project Toyota N SUZ18 SUZ212 MOT1 MOT2 FUJ1 FUJ2 MOT1 MOT2 OKA1 OKA2 SUG1 SUG2 SUG3 FUJ1 FUJ2 8th 6

Complete Super GT results Year Team Car Class 1 2 3 4 5 6 7 8 9 DC Points 2006 910 Racing With Team Ishimatsu Porsche 996 GT3 RSR GT300 SUZ OKA FUJ SEP SUG SUZ MOT AUTFUJ 33rd 4 2007 Yokoyama Racing Vemac RD320R GT300 SUZ OKA FUJ 25th 5 Team Uematsu SEP SUG SUZ MOT AUT FUJ 2008 Team Uematsu Nova Vemac RD320R GT300SUZOKAFUJSEPSUGSUZMOTAUTFUJ 17th 24 2010 R'Qs Motorsports Vemac RD350R GT300SUZOKAFUJSEPSUGSUZFUJMOT NC 0 2012 JLOC Lamborghini Gallardo RG-3 GT300 OKA FUJ SEP SUG SUZ FUJ AUT MOT 26th 2 2013 Arnage Racing Aston Martin V12 Vantage GT3 GT300 OKA FUJ SEP SUG SUZ FUJ FUJ AUT MOT 24th 4 2015 Pacific Racing Team McLaren MP4-12C GT3 GT300 OKA FUJ CHA FUJ SUZ SUG AUT MOT NC 0 2016 Gulf Racing with Pacific Porsche 911 GT3R GT300OKAFUJSUGFUJSUZBURMOTMOT 23rd 3 2017 EIcars Bentley TTO Bentley Continental GT3 GT300 OKA FUJ AUT SUG FUJ SUZ CHA MOT NC 0 2018 EIcars Bentley Bentley Continental GT3 GT300 OKA FUJ SUZ CHA FUJ SUG AUT MOT NC 0 2019 Team Mach Toyota 86 MC GT300 GT300 OKA FUJ SUZ CHA FUJ AUT SUG MOT NC 0 2020 Advics muta Racing INGING Toyota 86 MC GT300 GT300 FUJ FUJ SUZ MOT FUJ SUZ MOT FUJ 9th 34 2021 muta Racing INGING Lotus Evora MC GT300 GT300OKAFUJSUZMOTSUGAUTMOTFUJ 11th 23 2022 Arnage Racing Toyota 86 MC GT300 GT300 OKA FUJ SUZ FUJ SUZ SUG AUT MOT 29th 4 2023 Pacific Racing Team Mercedes-AMG GT3 Evo GT300 OKA FUJ SUZ FUJ SUZ SUG AUT MOT NC 0 2024 Pacific Racing Team Mercedes-AMG GT3 Evo GT300 OKA FUJ SUZ FUJ SUZ SUG AUT MOT NC 0 2025 Pacific Racing Team Mercedes-AMG GT3 Evo GT300 OKA FUJ SEP FS1 FS2 SUZ SUG AUT MOT 26th 12.5 ‡ Half points awarded as less than 75% of race distance was completed. (Number) Driver did not take part in this sprint race, points are still awarded for the teammate's result. * Season still in progress.

Complete Asian Le Mans Series results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) +YearTeamClassCarEngine1234Pos.Points 2013 AAI-Rstrada LMGTE Porsche 997 GT3-RSR Porsche 4.0 L Flat-6 INJ FUJ ZHU SEP3rd182014AAI-RstradaGT BMW Z4 GT3 BMW 4.4 L V8 INJ SHA SEP3rd58 Nissan GT-R GT3 Nissan 3.8 L V6 FUJ 2015–16 Team AAI LMP3 ADESS-03 Nissan VK50 5.0 L V8 FUJ SEP BUR SEP4th18 2016–17 Fist-Team AAI LMP3 ADESS-03 Nissan VK50 5.0 L V8 ZHU FUJ BUR SEP17th0

Complete Formula Regional Japanese Championship results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Entrant 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pos Points 2020 Field Racing FUJ11 FUJ12 FUJ13 SUG1 SUG2 SUG3 FUJ21 FUJ22 MOT1 MOT2 OKA1 OKA2 AUT1 AUT2 13th 26

Complete GT World Challenge Asia results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team Car Class 1 2 3 4 5 6 7 8 9 10 11 12 DC Points 2023 Akiland Racing Toyota GR Supra GT4 GT4 Silver-Am BUR1 BUR2 FSW1 FSW2 SUZ1 SUZ2 MOT1 MOT2 OKA1 OKA2 SEP1 SEP2 4th 87

References

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