Lewis Hamilton remained on top at the Russian GP in Practice Three after a session-long battle for supremacy with Nico Rosberg, setting up the likelihood of a closely-fought all-Mercedes duel for pole. The triple world champion had set the Friday pace but came under renewed attack from Rosberg on Saturday morning as the Mercedes W07 again proved untouchable around the Sochi Autodrom. Trading fastest times on the supersoft tyres throughout the hour-long session, Hamilton usurped Rosberg in the closing minutes via a best lap of 1:36.403.However, the championship-leading Rosberg remained just 0.068s adrift in the final reckoning, despite making several errors during the session as drivers again struggled for grip.That is a very close battle between Hamilton and Rosberg, said Sky Sports F1 commentator David Croft. It seems as though the Mercedes are going to be going for pole themselves. Ferraris Sebastian Vettel narrowly avoids colliding into the Mercedes of Lewis Hamilton in the pitlane during P3 in Sochi. Despite introducing an upgraded engine this weekend, Ferrari have yet to show they are capable of taking it to the world champions on outright pace and finished P3 in familiar third and fourth positions.But the team already know they will not lock out the second row on Sundays grid after a five-place gearbox change penalty was confirmed for Sebastian Vettel on Friday night.When is Russian GP Qualy and Race?The German finished third, six tenths back on Hamilton, having spent the start of the session on heavier-fuel long runs with 20 laps on used supersoft tyres.Once onto shorter runs, Vettel was twice frustrated by the sister Ferrari of Raikkonen - with the German waving a hand in his team-mates direction after being overtaken near the pits.And then Vettel had to have his wits about him when leaving the Ferrari garage when a mechanic inadvertently waved him into the path of an oncoming Hamilton. Behind the established top two teams, Williams appear primed for a more competitive weekend with Felipe Massa and Valtteri Bottas finishing in fifth and sixth positions respectively.With Red Bull - the third-fastest team so far this season - not faring as well in P3, Max Verstappen was seventh for sister team Toro Rosso, while eighth-fastest Jenson Button gave McLaren-Honda hope that this could be the weekend they finally break their long Q3 duck.Practice Three timesheet1. Lewis Hamilton, Mercedes, 1:36.4032. Nico Rosberg, Mercedes, 1:36.4713. Sebastian Vettel, Ferrari, 1:37.0074. Kimi Raikkonen, Ferrari, 1:37.7275. Felipe Massa, Williams, 1:37.9186. Valtteri Bottas, Williams, 1:37.9857. Max Verstappen, Toro Rosso, 1:38.1338. Jenson Button, McLaren, 1:38.2609. Carlos Sainz, Toro Rosso, 1:38.46510. Sergio Perez, Force India, 1:38.54211. Daniel Ricciardo, Red Bull, 1:38.62212. Fernando Alonso, McLaren, 1:38.63313. Daniil Kvyat, Red Bull, 1:39.04714. Nico Hulkenberg, Force India, 1:39.16215. Esteban Gutierrez, Haas, 1:39.23016. Kevin Magnussen, Renault, 1:39.23817. Romain Grosjean, Haas, 1:39.23918. Jolyon Palmer, Renault, 1:39.58919. Rio Haryanto, Manor, 1:39.59920. Pascal Wehrlein, Manor, 1:39.66321. Marcus Ericsson, Sauber, 1:39.74022. Felipe Nasr, Sauber, 1:39.898Watch the whole Russian GP weekend - LIVE ONLY on Sky Sports F1. The race begins at 1pm on Sunday, with build-up from 11.30am. Or watch the race without a contract for £6.99 on NOW TV. Also See: Five-place penalty for Vettel When is the Russian GP on Sky? J. C. Ramirez Angels Jersey .C. United of Major League Soccer. United chose the defender in the second round of the 2013 MLS re-entry draft. Cam Bedrosian Jersey . Gerald Green and Miles Plumlee? Green had bounced around the NBA when he wasnt playing overseas. The Pacers gave up on Plumlee after just one season. Now Green and Plumlee are key cogs in the Suns surprising breakout season. http://www.baseballangelslockroom.com/shohei-ohtani-angels-jersey/ .H. -- Matt Kenseth made it 2 for 2 in the Chase, holding off teammate Kyle Busch to win Sunday at New Hampshire Motor Speedway. Kole Calhoun Jersey . Brazilian national coach Luiz Felipe Scolari has confirmed that the veteran goalkeeper is set to join Toronto on loan, saying it will help him be ready for the World Cup. Andrew Heaney Angels Jersey . -- The Bishops Gaiters are showing they belong among the countrys top varsity football teams. Christian McCaffreys 6,191 total all-purpose yards are the most by any player in a 2-season stretch in FBS history ' ' '