Toni Pinion (GBR), Girlfriend Of Chris Vermeulen (AUS), Rizla Suzuki MotoGP, Suzuki, 71, 2007 MotoGP World Championship, Round 7, Cataluny

1972: As 1968.
1972: Death of Gilberto Parlotti at the Isle of Man TT, leading ultimately to the loss of its championship status.
1973: Deaths of Jarno Saarinen and Renzo Pasolini at the Italian round at Monza.
1974: The Suzuki RG500 is the first square-4 in the 500cc class.