Tatsuya Yamaguchi

is a Japanese motorcycle racer. He currently races in the MFJ All Japan Road Race Championship JSB1000 class aboard a Honda CBR1000RR. He has also competed in the MFJ All Japan Road Race GP250 Championship, the MFJ All Japan Road Race JSB1000 Championship (where he was champion in 2002), the MFJ All Japan Road Race J-GP2 Championship, Asia Road Race SS600 Championship and the MFJ All Japan Road Race ST600 Championship, where he was champion in 2010 and 2011.

Career statistics Grand Prix motorcycle racing By season

Races by year Year Class Bike 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Pos. Points 250cc Honda MAL JPN6 SPA FRA ITA CAT NED GBR GER CZE IMO VAL AUS RSA BRA ARG 22nd 10 2010 Moto2 Moriwaki QAT SPA FRA ITA GBR NED CAT GER CZE INP RSM25 ARA JPN MAL AUS POR VAL NC 0

Supersport World Championship Races by year (key) Year Bike 1 2 3 4 5 6 7 8 9 10 11 12 Pos. Pts 2002 Honda SPA AUS RSA JPNRet ITA GBR GER SMR GBR GER NED ITA NC 0

All Japan Road Race Championship

Races by year

(key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Class Bike 1 2 3 4 5 6 Pos Pts 2025 ST600 Yamaha SUG1 SUG2 MOT AUT OKA SUZ 19th 5