Singapore - Red Bull enjoyed a welcome return to the top of the timesheets after a few quiet races with Daniel Ricciardo and Max Verstappen setting the fastest times in the first practice session for the Singapore Grand Prix on Friday.
The demanding Marina Bay Street Circuit has traditionally favoured the Red Bulls and Ferraris, so it was no surprise to see the Italian team's Sebastian Vettel and Kimi Raikkonen clock the next quickest times.
Mercedes, meanwhile, opted for a different strategy, deciding not to use the fastest 'hypersoft' tyre compound throughout the session, making it difficult to evaluate championship leader Lewis Hamilton's sixth spot on the timesheets, especially after he locked his front wheels and momentarily veered off the circuit.
Ricciardo has failed to finish the past two Grands Prix since Formula One returned from its summer break but he again showed his street circuit prowess by clocking 1m39.711s in the baking Singapore sun.
Verstappen lapped in 1m39.912s to edge out Vettel by 0.085s but the German will be looking to improve over the weekend as he seeks to eat into Hamilton's 30-point championship lead with seven rounds remaining.