BARCELONA, Spain - Mercedes rivals hope a busy three weeks of tinkering on their slower cars and the move to European tracks will be enough to at least threaten Lewis Hamiltons and Nico Rosbergs stranglehold on Formula One. Riley Ridley Jersey . The Mercedes pair head into Sundays Spanish Grand Prix after sweeping the first four races in impressive style, with the most compelling driving coming between the teammates while the pack puttered away in the distance. The switch to V6 turbo hybrid engines has dislodged Red Bull as F1s dominant team after four seasons, and Mercedes was also dealing far better than the rest with the new powertrain and other rule changes. Hamilton has led a Mercedes one-two finish with Rosberg in the last three races after the German won the season opener. The silver-and-teal duo have also taken all four pole positions, and set the fastest lap at each grand prix. "We are now four races into the 2014 season and hold a strong position in both championships," Mercedes team executive director Toto Wolff said. "However, the first European round of the year always provides a prime opportunity for teams to arrive with improvements to their cars. Of course, we are no different to any other team in that respect and our aim must be to increase the advantage we enjoyed at the last race in China." Neither Hamilton nor Rosberg has yet to win at the Circuit de Catalunya, although they did take the top two positions in qualifying here last year. Rosberg, who has a four-point lead over Hamilton in the championship, said that after years of racing and preseason tests at Barcelona "there is probably no other track in the world" that he knows better. "I also have some good memories of race weekends in Barcelona," Rosberg said. "Last year (...) I started from pole position so Im looking forward to going back there again, and maybe repeating that particular feat. Each team will have been pushing hard during the break to find some extra performance from new parts. So it will certainly be an interesting weekend." Red Bull will be counting on making strides after a dismal start to Sebastian Vettels title defence. Vettel has yet to finish better than third place, and has twice been ordered by his team to let new teammate Daniel Ricciardo pass him for higher finishes in the last two races. Vettel said a lot would depend on doing well in Saturdays qualifying because the track design offers few chances to challenge front-runners. The Montmelo circuit features one long straightaway before the first corner, which is considered the best for overtaking. It is also known to be tough on tires. Paul Hembery, the director of tire provider Pirelli, said that despite the tracks abrasive surface and high temperatures they expected teams to need only three pit stops instead of four as they have made in the past. Ferraris Fernando Alonso proved last season that wise tire management and smooth pit stops can be enough to compensate for a lack of overall speed. Alonso enters the race in a distant third place, with 41 points to Rosbergs 79 and Hamiltons 75, but after managing to finally reach the podium at Shanghai in Ferraris first race under new team principal Marco Mattiacci. The two-time former world champion has a strong record in front of his home fans, with wins here both last year and in 2006 to give him seven career podium finishes at the Spanish GP. His victory one year ago was Ferraris last as a team. With Alonso and teammate Kimi Raikkonen far behind the pacesetters, the Italian team will need a near perfect weekend to break its poor run. "With Fernando weve seen an extraordinary level of performance, scavenging every possible point at every possible opportunity," Ferrari technical director James Allison said. "We are learning how to get performance out of this new set of regulations, and hopefully to make this car more competitive. The key to a successful season is to keep improving your car at every race." Mike Singletary Jersey . Now, the hottest team on the ATP are pointing their sights on qualifying for the eight-team season finals in London next November. Pospisil has now established the year-end World Tour Finals as the benchmark for a breakthrough season, with Pospisil and Sock provisionally standing ninth. Jim McMahon Jersey . Cleveland released the troubled wide receiver on Wednesday, an expected ending after Bess was arrested in January for assaulting a law enforcement officer at an airport and other bizarre behaviour. http://www.cheapbearsjerseysauthentic.com/ . After missing 20 games as a rookie a year ago, Valanciunas - like the Raptors as a whole - has been fortunate to be in good health this season. As he spoke about it, the Raptors sophomore centre scanned the room for wood to knock on. "It is disappointing because we lost today so thats the worst part of the day," said Valanciunas, who left Tuesdays game with a lower-back sprain in the third quarter, missing the rest of Torontos 118-113 overtime defeat at the hands of the Hawks.ST. LOUIS -- When Braves second baseman Tyler Pastornicky backpedaled into shallow right field to catch the popup and Jason Heyward didnt arrive fast enough to take charge, Kolten Wong got the green light. The rookie raced home with the tying run on surely the shortest sacrifice fly of Yadier Molinas career, one of many big plays the St. Louis Cardinals made with their legs in a 4-1 victory over the slumping Atlanta Braves on Saturday. "By the time I realized I could get there, it would have been tough to call him off," Heyward said. "Heads up play on their part by sending the runner." Wong and Peter Bourjos each had a pair of bunt singles, three of them fueling rallies. Bourjos got picked off after beating out a bunt leading off the third, but squeezed home an insurance run in the seventh. "I think today was probably one of the best representations of what speed can do for us," manager Mike Matheny said. "A lot of guys made things happen, getting on base and creating havoc." Wong set up the tying run by beating out a bunt to lead off the fourth. He squared around for another hit in the sixth and drew a wild throw from catcher Evan Gattis while stealing second, producing the go-ahead run. The Cardinals matched their season high with their fourth straight win. Miller (6-2) allowed a run and five hits in seven innings, one inning longer than his previous high this season. He matched his season best with seven strikeouts, fanning B.J. Upton three times, and called it his best outing of the year "for sure." "I felt like we did a really good job of keeping the hitters off-balance and getting ahead in the count," Miller said. "Just an all-around good day, but at the same time theres still room for improvement." Trevor Rosenthal fanned two in the ninth inning, with Upton striking out a fourth time, to earn his 13th save in 14 chances. He has a save in three straight games for the second time in his career. Braves manager Fredi Gonzalez was ejected in the ffifth inning for arguing a call that led to a bunt double play. Cheap Bears Jerseys. . He could face a fine for charging out of the dugout a second time and thought the ball was "maybe 5, 6 inches foul." "Thats what I kept asking: Can we get some help from one of the guys on the line?" Gonzalez said. "What are you going to do? We still scored one run. "But that would have been a nice opportunity to try again to advance a runner," he added. Andrelton Simmons had three hits for Atlanta, which lost its third in a row and scored fewer than three runs for the 19th time in 41 games this season. Miller has won six straight decisions in seven starts after losing his first two of the season. The last three St. Louis starters have worked seven innings. In the fifth, Harang stayed in the batters box after his attempt to sacrifice Simmons to third didnt go far. Molina pounced on the ball and threw to third, with shortstop Jhonny Peralta covering, for a tag play. Peralta had an easy relay to first to finish with second baseman Wong covering for an unusual 2-6-4 double play. "What stinks is sometimes its those little plays that change the tempo of the game," Harang said. "If its called four, then I can get another one down. Its tough, you know." The Braves capitalized on shoddy defence to take the early lead. Simmons scored from first on Harangs two-out single -- the pitchers first hit of the year. Harang took third after left fielder Matt Holliday threw behind him, then trotted home after Wongs wild throw from second. NOTES: Cardinals lefty Jaime Garcia will make his first start since injuring his shoulder last May in the series finale, with Gavin Floyd (0-1, 2.70) starting for Atlanta. ... The attendance of 44,981 was the Cardinals eighth sellout. ... B.J. Upton made a nice running shoe-top catch on Allen Craigs sinking fly ball to start the second. ... The Braves are 1-4 against the Cardinals and 8-1 against the rest of the NL Central. ... Molina is 10 for 21 the last six games. 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