Reigning world champion Valentino Rossi joins his teammate Jorge Lorenzo on the 'recently bitten by a dirt bike' list. Rossi crashed his dirt bike yesterday in Italy and reportedly injured his back and shoulder in the fall.

Jorge Lorenzo damaged his right hand in a play-bike crash before the start of the 2010 MotoGP season.

Rossi reportedly has seen a medical professional and has been advised he'd done some serious bruising, but nothing else, and he should be able to ride the Japanese Grand Prix.

A number of riders have previously suffered injuries at the hand of a motocross bike, including Aaron Yates, Neil Hodgson, Nick Hayden, Tom Hayden and John Hopkins, among many others.