Mercedes led the way in Melbourne with their rivals Ferrari well back, but was it just a ruse from the Prancing Horse?
Lewis Hamilton was the fastest driver in the opening practice sessions at the first Grand Prix of the new Formula 1 season in Australia.
The reigning world champion finished 0.048 seconds ahead of his Mercedes teammate Valtteri Bottas in the second run.
The Red Bulls of Max Verstappen and Pierre Gasly were a further 0.8 seconds adrift while Ferrari's Sebastian Vettel was fifth-fastest.
However, there are suspicions that the Italian team, who had the fastest car in pre-season testing, were holding back and hiding their full potential ahead of Saturday's qualifying.

Indian team receive $14.2 million bonus for historic T20 World Cup win
Djokovic, Draper set up last-16 showdown
FIFA COO: World Cup 'too big' to be postponed by Middle East conflict
West Ham into FA Cup quarter-finals with shootout win over Brentford
Millwall fined 45,000 pounds for offensive chanting in League Cup tie
