Andrea Iannone, one of three riders injured during the German MotoGP event, will also miss this weekend's US round.

The Pramac Ducati rookie dislocated his right shoulder in a Saturday fall and, according to ANSA, will not be fit for what should have been his Laguna Seca debut.

No replacement has yet been announced and Alex de Angelis, called up in place of the long-injured Ben Spies, could thus be Pramac's only representative at round nine.

Title contenders Dani Pedrosa and Jorge Lorenzo, who also missed the Sachsenring race, are yet to officially confirm their US GP plans.

Iannone now has until Indianapolis on August 16-18 to recover.