Sebastian Vettel and Lewis Hamilton again appear poised to slug it out for pole position tomorrow ahead of the Abu Dhabi Grand Prix.
Vettel edged Hamilton in the second 90-minute practice session at the Yas Marina track that replicated race conditions as it began under a setting sun and ended in darkness.
The duo have now been quickest in eight of the 11 practice outings overall over the past four years of this event - a remarkable record, with no-one seemingly able to hold a candle to them.
Red Bull star Vettel and McLaren ace Hamilton have also locked out the front row in the three races to have taken place so far - with the former claiming two poles and the latter one.
In the race itself, Vettel triumphed in 2009 and 2010 with Hamilton winning last year, taking advantage of a first-lap puncture on the German's car.