Tsuboi concluded his fourth campaign in Japan’s top single-seater championship 11th overall, an improvement on a dire 2021 season but still a far cry from his form in 2020, when he won two races on his way to third overall.
The 27-year-old’s best finish of the year came in July’s Fuji race, where he finished second after a strategy miscue cost him a likely victory to Ukyo Sasahara.
