The Australian was unable to replicate his earlier form in final practice where he set the fastest-ever time at the circuit of 1:29.527.

BBC: QUALIFYING POSITIONS

And Hamilton continued his fine form on Saturday morning with the fastest time in final practice despite a mechanical problem early on.

BBC: SPORT | Motorsport | Formula One | Turkish GP qualifying as it happened

Nick Heidfeld, who set the fastest lap in final practice, kept up his improved run of form to take fifth for BMW Sauber with team-mate Robert Kubica in eighth.

BBC: Super Hamilton takes Belgian pole

The championship leader is running with a new chassis but was well off the pace, down in 18th during final practice.

BBC: Bahrain qualifying - as it happened

The Briton will share the back row with Toro Rosso's Sebastian Vettel, who did not take part in qualifying after ploughing into the wall during final practice.

BBC: Hamilton takes Canadian GP pole

Once teams came up with an idea and plan, they had the opportunity to practice pitch the judges and seek their guidance in the lead up to the final three-minute presentations on day two.

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Will Power broke several vertebrae in his lower back in a 2009 crash during practice at Sonoma and missed that event and the final three races of the season.

NPR: Hamlin Has Compression Fracture In Lower Back

Liuzzi's German team mate Adrian Sutil, who had suffered a driveshaft failure in final practice, qualified 14th but will be demoted five places on the starting grid for an unscheduled gearbox change.

BBC: Sebastian Vettel pips Fernando Alonso to German F1 pole

In practice, the default assumption seems to be that a couple will file jointly for the final year of the marriage.

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