 Complete the following phrase:  At the United States Grand Prix, Schumacher suffered serious injuries in an accident that occurred on the ninth lap of the race. The deceleration was measured at 78 g 765 ms2, resulting in a concussion as well as two minor fractures to his spinal column. Schumacher was forced to miss the next six races. Williams driver Marc Gené substituted for Schumacher for the races in France and Britain, with Antônio Pizzonia taking over the role for the next four races. In July, Schumacher signed a three-year contract with the Toyota team. He was passed fit for the Italian Grand Prix, but ultimately returned for the Chinese Grand Prix, where he retired from a puncture. Schumacher followed up the result by taking second place in Japan, and a fifth place at the final round in 