BBC Sport has sat down for a chat with the two men who between them have won the F1 world title in six of the last seven years.

Lee McKenzie had the task of putting the questions to Lewis Hamilton and Sebastian Vettel and you can see the result in the pre-race programme on Sunday.

Image source, Lee McKenzie on Instagram

Just to bring you up to speed on the various investigations that sprang up from yesterday's second practice session.

No driver was deemed at fault in the first-corner collision between Ferrari's Sebastian Vettel and Force India's Sergio Perez, although a reprimand was given to Vettel's team-mate Kimi Raikkonen for an infringement when leaving the pit lane.

Mercedes' Lewis Hamilton also crossed a white pit-line limit line but escaped any action.

Andrew Benson
Chief F1 writer

"When Sebastian Vettel won for Ferrari in Malaysia three weeks ago, the first indication that the red cars were a serious threat to Mercedes came in second practice, when they were neck and neck. After Vettel duly delivered the victory - made easier by Mercedes' decision to pit both cars under the safety car - Ferrari technical director James Allison said: 'Those Friday times tend not to lie.'

Image source, Getty Images

"Well, if the truth lies therein this weekend, Mercedes have a real problem on their hands, for Vettel was 0.6secs quicker on average than Mercedes' Nico Rosberg on the race-simulation runs on the soft tyre. Mercedes are under no illusions about what that means. 'Ferrari are way too quick for our liking,' Rosberg said. 'We have an edge over Ferrari in qualifying so there for sure we will be one and two, I think, but the race is more problematic.'"

Hello and welcome along to our live text commentary of third practice and qualifying for Sunday's Bahrain Grand Prix.

Mercedes' Nico Rosberg finally got the better of team-mate Lewis Hamilton yesterday as he posted the quickest time in FP2.

Image source, Reuters

Both Silver Arrows drivers were once again required to keep a close eye on the Ferraris, who led the chasing pack in third and fourth. Battle will be joined between the two front-running teams again today, with Rosberg conceding after second practice that "the pace of the Ferraris is very worrying".

Enough to worry the Mercedes off the front row?

Well, it's a stretch but stranger things have happened.

Image source, AP

Here's a picture to sum up the 2015 season so far.

A Mercedes hoons around the track with a scarlet Ferrari in hot pursuit.

Meanwhile, a McLaren-Honda lurks unhappily in the back of frame, its world champion driver with much to ponder.

Will the familiar narrative continue through final practice and qualifying today?