Road Racing World Championship Grand Prix Anti-doping controls Anti-doping controls were carried out at the German Grand Prix, held on the circuit of Sachsenring, on July 31 last. Neither prohibited substances nor markers of the use of prohibited methods were found in the tested samples. The riders controlled were : Alex Barros (BRA, MotoGP), Max Biaggi (ITA, MotoGP), Shinya Nakano (JPN, MotoGP), Hiroshi Aoyama (JPN, 250cc), Alex de Angelis (RSM, 250cc), Daniel Pedrosa (SPA, 250cc).