 Complete the following phrase:  At the 2006 Chinese Grand Prix, however, he finished for the first time, albeit four laps down in sixteenth place. After the race, his enjoyment was spoiled when Nick Heidfeld admonished him for an incident on the last lap which had dropped the German from 4th to 7th place. However, Heidfeld had mistaken Yamamoto for Sato, the driver who caused the incident, and apologised for his mistake before the 