Fernando Alonso built on Ferrari's impressive Friday practice pace by topping the final practice session at the Singapore Grand Prix. Neither Mercedes was in the top two as Alonso finished the session 0.051 faster than Red Bull's Daniel Ricciardo in second. Nico Rosberg was third fastest and 0.189s off Alonso, while Lewis Hamilton locked up and ran wide at Turn 13 on his fast lap, meaning he had to settle for the sixth fastest time. The chemical nature of the super-soft compound means it only offers one fast lap before losing grip, so both Rosberg and Hamilton will have to wait until qualifying to see what they can manage with a clean lap. However, neither were happy with their cars after Friday practice, so Singapore might be a genuine opportunity for either Ferrari or Red Bull to take advantage and steal pole position. Toro Rosso's Jean-Eric Vergne impressed with the fourth fastest time ahead of the Red Bull of Sebastian Vettel. With 17 laps in total, Vettel was making up for lost time on Friday when his team had to change his car's engine and he missed much of the second session. Williams showed signs of a resurgence with the seventh and eighth fastest times from Felipe Massa and Valtteri Bottas after both drivers complained about a lack of rear grip on Friday. Kimi Raikkonen was ninth fastest ahead of an impressive effort from Esteban Gutierrez in the Sauber in tenth. That left both Force Indias and both McLarens outside the top ten, although Nico Hulkenberg, Kevin Magnussen and Jenson Button were all within striking distance and will be hoping to make Q3 in qualifying. The Lotus drivers may struggle to make it out of Q1, however, with Romain Grosjean and Pastor Maldonado back in 17th and 18th.