 Renault suffered their worst performance of the season in Singapore, where Petrov qualified in 18th and finished 17th, before a ninth-place finish in Japan.At the , Petrov qualified eighth but retired after crashing into the back of Michael Schumacher on lap 16, causing a safety car.It became the third contact between the pair in 2011, when Petrov appeared to be too involved in trying to outbrake Alonso on the long straight before Turn 3.