The 20-year-old rookie - who has taken three podiums from his first three races, including a debut win last time out in Estoril - was ejected spectacularly from his Fiat Yamaha midway through Friday's first free practice at Shanghai, ending his hopes of a fourth consecutive pole position.

The accident occurred as the Spaniard switched direction from right to left, the rear wheel of his M1 losing traction before launching the reigning 250cc world champion into a huge 360-degree somersault.

Lorenzo landed hard on his feet, fracturing his left ankle and sustaining severe trauma and bruising to parts of his right ankle and foot.

The joint world championship leader was taken to a nearby hospital to have his injuries examined and missed the second free practice session as a result - but returned on Saturday to claim a brave fourth on the grid for Sunday's race.

CLICK HERE to see picture coverage of the accident...