Lewis Hamilton vs. Nico Rosberg: The F1 rivalry renewsUpdated 1346 GMT (2146 HKT) March 11, 2016 Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds. Photos: Who will be Mercedes' No. 1?Will it be third time lucky for Nico Rosberg (right) in 2016? Or will his Mercedes teammate Lewis Hamilton (left) win a third successive Formula One championship?Hide Caption 1 of 6 Photos: Who will be Mercedes' No. 1?The new Mercedes car showed no signs of slowing over eight days of winter testing Barcelona, putting an impressive 1,294 laps on the clock -- the equivalent of more than 19 races.Hide Caption 2 of 6 Photos: Who will be Mercedes' No. 1?Former F1 race-winner Mark Webber tips Hamilton to be "dangerous" if he shakes off his post-2015 title success hangover. Hide Caption 3 of 6 Photos: Who will be Mercedes' No. 1?Rosberg -- Webber's teammate during his 2006 rookie season at Williams -- won the last three races of 2015 after Hamilton had clinched the third drivers' championship of his career. Hide Caption 4 of 6 Photos: Who will be Mercedes' No. 1?Webber believes Hamilton "backed off a sniff, two or three percent" after clinching his second successive title at the U.S. Grand Prix in Austin, Texas. Hide Caption 5 of 6 Photos: Who will be Mercedes' No. 1?As well as those three wins, Rosberg claimed six pole positions at the end of last year to give him much-needed momentum ahead of the new season. Hide Caption 6 of 6With Mercedes favorite to defend its Formula One titles, can Nico Rosberg depose his teammate Lewis Hamilton as world champion?More from Sport - MotorsportF1: Hamilton extends title lead as Vettel crashes out at rain-hit Singapore GP F1: McLaren announces Honda split, signs three-year deal with RenaultF1: How crashing out helps win races Valtteri Bottas: Finnish driver signs new deal with MercedesF1: Hamilton and Vettel lock horns at Italy's 'Temple of Speed'