Webber seizes the advantage in final practice
Mark Webber brought Lewis Hamiltons' run of P1s to an end in Saturday's final practice as the Aussie edged the McLaren by 0.093s.
With blue skies over head and the track temperature at 39'C, Jenson Button got proceedings underway with a 1:29.641.
However, within seconds he was down in sixth place with Sebastian Vettel and then Webber leading the way. The benchmark was down to a 1:23.359 after the first ten minutes.
Vettel was soon overhauled his team-mate with a 1:23.058 before the Aussie lost out to Kimi Raikkonen.
As the drivers continued putting in the laps Hamilton, Friday's pace-setter, begun to work his way up the order until he was leading the way by half a second. The McLaren driver continued lapping, lowering his P1 time to a 1:21.706.
Halfway through the session Vettel headed out on the soft Pirelli tyres, reclaiming the top position by 0.035s over Hamilton. Hamilton's time, though, had been set on the medium compound.
Webber returned to the front with a 1:21.550 while Fernando Alonso - a late starter - finally made his mark, going 14th, eighth and then fifth.
There was a brief lull for the action again heated up in the final ten minutes as drivers ventured out on the soft tyres.
Hamilton improved to second on his first flying lap, slotting in between the Red Bulls while Alonso took fifth place. Mercedes struggled with Michael Schumacher 17th and Nico Rosberg 18th.
Practice Three ended with Webber quickest with a 1:21.550, 0.093s ahead of Hamilton while Vettel, who ran wide on his final flying lap, was third.