AUSTIN, Texas -- Toto Wolff says Mercedes faces a very stressful final three races of the season as it attempts to ensure 100 percent reliability for both its drivers.Nico Rosberg leads teammate Lewis Hamilton by 26 points, with 75 left to play for over the remaining three rounds. Hamiltons campaign has been plagued by reliability issues, including an engine failure while leading the Malaysian Grand Prix last month, but he took his first victory since July at the weekends U.S. Grand Prix.It is very stressful for the guys in the garage because there is a lot of responsibility and pressure on them, and everything that is being said, consciously or unconsciously, puts even more pressure, Wolff said. Thats not the right thing to do. Our job needs to be to take pressure away because responsibility and accountability stays there anyway. This is how these guys work.Hamilton admits he has been haunted by the failure in Malaysia and spent much of Sundays U.S. Grand Prix in fear of a repeat.Every single lap I was thinking something might happen, Hamilton said. When I get on that back straight I was petrified. It [the engine] has a beautiful ring to it, but it had a beautiful ring in Malaysia.I was haunted by that, dreading that would happen so I am so grateful that it didnt. It wasnt until I got over the line that I was like thank you, I am so happy, rubbing the cockpit - thank you for getting me there.Wolff confirmed Mercedes had opted not to pursue an additional upgrade to its engine, meaning Hamilton and Rosberg both have the same spec engine for the rest of the season after the German took a new unit this weekend.We have decided not to bring the latest spec engine and upgrades to every single Mercedes customer, not just us. We are running that specification to what it can run, so that hasnt changed.Asked if there had been any engine worries in Austin, Wolff added: It is never plain sailing. It was as good as it can be with the engine. I understand that Malaysia came out of nowhere and Malaysia swings with all of us. That little trauma is going to remain for a while. Authentic Jerseys China . Down by seven with 90 seconds left in regulation, thats where they looked comfortable. China Jerseys . Now, correct me if Im wrong but I saw one official distinctly pointing at the net indicating a good goal but after an inconclusive review they overturned the goal. Shouldnt the ruling on the ice (good goal) stand after an inconclusive review? Why was this overturned? James Veaudry Pembroke, ON -- Hey Kerry, Youll get a lot of these, but why was the Montreal goal against Nashville Saturday night overturned? 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Sir Bradley Wiggins insisted he was going to enjoy what might be the final race of his career after moving into a share of third place with Mark Cavendish as the Ghent Six Day started in the 36-year-olds city of birth.The five-time Olympic champion and Britains first Tour de France winner had expected the exhibition event, which began on Tuesday and finishes on Sunday, to be his final hurrah, but hinted he may be tempted to race again next year after last months London Six Day.Wiggins use of therapeutic use exemptions (TUEs) for anti-inflammatory drug triamcinolone on the eve of the 2011 and 2012 Tours de France and 2013 Giro dItalia overshadowed the build-up to what could still be his farewell appearance.But he insisted he was in shape to ensure this week is remembered for all the right reasons following a promising start alongside Cavendish.Ive trained hard for this, you know? Ive been looking forward to it, I really have, he was reported as saying in various British newspapers.Nothing was going to piss on my parade.Wiggins toold reporters to ask him again on Sunday as to whether this is his final appearance, but admitted he would be emotional this week.ddddddddddddIm sure I will, he added. Especially when my kids come.Because I always think of my father. I was sat in the cabins with me dad when I was one and Ive got pictures of that. And because I have my own kids now... it will be really nice.Wiggins and Cavendish won the second points race of the night and were second in the team elimination after the Manxman was beaten in the final sprint.Cavendish was second in the 166 metre time trial before teaming up with Wiggins to win the first madison.Cavendish then won the derny final, but he and Wiggins were less successful in the final madison of the night and dropped to third overall.On 72 points, the British pair lie 18 points behind leaders Kenny de Ketele and Moreno de Pauw, the pair who beat them in the London Six Day. Cheap Authentic Jerseys Discount NFL Jerseys Wholesale NFL Camo Jerseys Cheap NFL Autographed Jerseys China Jerseys Wholesale Wholesale Jerseys Cheap Jerseys Store China Jerseys Wholesale Wholesale Throwback Jerseys Cheap Stitched Jerseys China NFL Hoodies Cheap Authentic Jerseys Wholesale Jerseys China Camo China NFL Jerseys Jerseys From China ' ' '