 Complete the following phrase:  On 16 January 2017, Mercedes announced that they signed Bottas for the 2017 season to partner Lewis Hamilton, replacing the 2016 World Champion Nico Rosberg following his shock retirement from the sport. Bottas finished 3rd in his first race as a Mercedes driver, the 2017 Australian Grand Prix, behind Sebastian Vettel and Lewis Hamilton. At the 2017 Chinese Grand Prix he spun behind the safety car and fell from 5th to 12th but managed to fight his way back to 6th place behind Lewis Hamilton, Sebastian Vettel, the two Red Bulls and Kimi Räikkönen. He managed to qualify on pole ahead of Lewis Hamilton at the 