Yoshimi Katayama wins the Dutch TT, 50cc class, at TT Circuit Assen in the Netherlands.
Yoshimi Katayama began his Grand Prix career in 1964 with Suzuki riding mainly in the 125cc class. 1964-1966 seasons were mostly filled with fifth and sixth place finishes often due to mechanical problems. The 1967 season things would turn around for Katayama as he would win two Grand Prix races and finish the season in second place behind his Suzuki team-mate, Hans-Georg Anscheidt in the 50cc world championship. Yoshimi finished the 1967 season in fourth place in the 125cc championship.
Katayama would switch to cars in 1968, competing in domestic series mainly as Mazda's factory driver until he retired at the end of 1990.
