Ryohei Sakaguchi
Ryohei Sakaguchi is a Japanese racing driver currently competing in Super GT for Pacific Racing Team.
He 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.
Personal life
Sakaguchi is the uncle of 2020 Formula Regional Japan champion Sena Sakaguchi.Racing record
Racing career summary
‡ Team standingsComplete Japanese Formula 3 results
Complete Super GT results
‡ Half points awarded as less than 75% of race distance was completed.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
Complete Formula Regional Japanese Championship results
| Year | Entrant | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | Pos | Points |
| 2020 | Field Racing | FUJ1 1 5 | FUJ1 2 6 | FUJ1 3 6 | SUG 1 | SUG 2 | SUG 3 | FUJ2 1 | FUJ2 2 | MOT 1 | MOT 2 | OKA 1 | OKA 2 | AUT 1 | AUT 2 | 13th | 26 |
Complete GT World Challenge Asia results
| 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 | BUR 1 | BUR 2 | FSW 1 30 | FSW 2 27 | SUZ 1 31 | SUZ 2 Ret | MOT 1 | MOT 2 | OKA 1 2 | OKA 2 4 | SEP 1 | SEP 2 | 4th | 87 |