Mercedes and Ferraris battle for F1 supremacy has ramped up at the Russian GP with both teams spending their first in-season engine development tokens. Ferrari drivers Sebastian Vettel and Kimi Raikkonen will race with new internal combustion engines in Sochi after the team spent three of the nine tokens they had left over from the winter.Meanwhile, Mercedes have used two of their 13 outstanding tokens on fuel system improvements, which their championship-defending works outfit and three customers teams - Williams, Force India and Manor - will all benefit from this weekend. However, none of the eight Mercedes-powered cars in question are required to fit fresh engines as the improvements come outside the sealed areas of the power unit. The world champions have also introduced a new oil from suppliers Petronas.Mercedes now have 11 tokens left to use over the remaining 17 races. Ferraris need for performance improvements are more acute with the Scuderia already over 50 points adrift of Mercedes in the Constructors Championship. The teams start to the season has been hindered by reliability problems, with Vettel and Raikkonen both registering a DNF apiece in the opening three rounds.It seems that Ferrari spent three of their engine tokens on combustion, which is half for performance and half for reliability, said Sky Sports F1s Ted Kravitz.That means Vettel is now on his third engine out of five for the season. We presume that the swapping around will only last so far and hell have to take a sixth. Raikkonen is on his second engine.Hopefully well see more for the neutral this weekend.Watch 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: Rosberg: Rivals will fight back Red Bull taking aim at Ferrari Kostas Antetokounmpo Jersey . The Lightning are 2-0 so far on a four-game road trip, giving the club five straight wins as the guest and improving Tampas away record this season to 11-8-2. Luka Doncic Jersey . -- Jacksonville wide receiver Cecil Shorts will likely be a game-time decision whether hell play Sunday in the Jaguars home game against the San Diego Chargers. http://www.mavericksproshop.com/kids-seth-curry-mavericks-jersey/ . Boucher previously coached the Tampa Bay Lightning and had a 97-78-20 record over two-plus seasons. He was dismissed by the team last March after the Lightning struggled in the lockout-shortened season with a 13-18-1 record. Custom Dallas Mavericks Jerseys . Los Angeles star goalie survived those perilous gymnastics with no problem, and he eventually backstopped the Kings to a skid-snapping win. Quick stopped 27 shots in his return from a 24-game injury absence, Jeff Carter scored the tiebreaking goal with 7:55 to play, and the Kings snapped their five-game losing streak with a 3-1 victory over the Vancouver Canucks on Saturday night. Dennis Smith Jr. Jersey . The 27-year-old Scrivens will be joining his third NHL club since signing with the Toronto Maple Leafs as a free agent in 2010. The move also reunites with him with head coach Dallas Eakins from their time together with the American Hockey Leagues Toronto Marlies. Clarke (Osceola, Iowa) High Schools mascot is the Indians. That doesnt mean the school should appropriate Native American culture.The Clarke girls basketball team got ready for its upcoming season by having a photographer create a poster titled Tribal Family. It features the players wearing cultural heaadgear and silhouetted in what appears to be a tribal dance.dddddddddddd (Oh, and the schedule is on the bottom.)Not a good look for Clarke High School. Or the photographer. Wholesale NFL Jerseys China NFL Jerseys White China Jerseys Wholesale NFL Jerseys From China Cheap Authentic Jerseys Cheap Jerseys 2019 Cheap Nike NFL Jerseys Cheap NFL Jerseys Throwback Cheap Jerseys 2019 China Jerseys China NFL Gear Youth NFL Jerseys Wholesale Youth NFL Jerseys China Cheap Nike NFL Jerseys Cheap NFL Womens Jerseys ' ' '