Mercedes boss Toto Wolff says his team is being uber-cautious when it comes to the reliability of its two cars over the rest of the season.With four races remaining, Nico Rosberg and Lewis Hamilton are in a straight fight for the title with 33 points separating them ahead of Sundays U.S. Grand Prix. Hamiltons campaign has been dogged by a series of reliability issues, including an engine failure while leading the Malaysian Grand Prix last month, and on Friday night in Austin, Mercedes mechanics broke their FIA-imposed curfew to change the fuel system on his car.We just saw some data we were not sure of, whether it was all right, Wolff explained. Our main aim is to give them a reliable car so they can fight it out on track, and we are being maybe uber-cautious at the moment.Hamilton said he was trying not to think about the potential problems.I didnt know [about the fuel system before qualifying]. I dont know why I didnt know -- I was just focused on the job. I wasnt actually aware so I didnt have any concerns at that point but I am conscious of it. Maybe you should ask Toto about it and why theres a knock-on effect.When Wolff was asked if there could be any ramifications to the fuel system change, he said: Generally this season we have more mechanical reliability situations which we need to get on top of, and we are trying to contain that at the moment.Following the engine failure in Malaysia, Mercedes decided to delay the introduction of new engines for its customer teams while it investigated the issue. Despite its customers fitting new engines this weekend as well as Rosberg taking a fresh power unit, Wolff admitted the big-end bearing failure at Sepang is still not fully understood.No it hasnt been fully understood yet. Its still under investigation. Weve seen this season that sometimes the complexity of the kit makes it difficult to pinpoint down one single thing.Tony Gwynn Jersey . Instead of dwelling on the negative, Oates focused on what was good about the clubs recent play. It worked. Gerardo Reyes Jersey . Calgary scored on the first shift, and Michael Cammalleri scored twice as the Flames cruised to a 5-2 win over the Washington Capitals on Saturday. https://www.cheappadresjerseys.us/753m-joe-carter-jersey-padres.html . -- Anaheim Ducks captain and leading scorer Ryan Getzlaf has been scratched from Sunday nights game against the Vancouver Canucks because of an upper-body injury. Joey Lucchesi Jersey . Ashley Youngs cross was inadvertently headed by Chester into his own net in the 66th minute, allowing United to claim a third straight league win. "We had to dig deep with our fighting spirit and weve done that," United striker Wayne Rooney said. Ian Kinsler Jersey . -- In one brief spurt, Brazil turned a close game into a rout and proved again it will be a strong World Cup favourite.James DeGale admitted he would prefer Anthony Joshua to fight Tyson Fury over Wladimir Klitschko.Their match-up at Wembley Stadium on April 29, for Joshuas IBF title and the WBA belt Fury recently vacated, is expected to attract a British post-war record fight crowd of around 90,000.It features one of the finest heavyweight champions in history challenging another expected to prove himself the best of the coming era, but for all that DeGale considers Joshua the worlds leading active heavyweight, he cannot ignore the shadow Fury casts over their fight.Fury vacated his WBA and WBO titles in October to deal with his medical treatment and recovery after struggling with mental health problems, but before then was widely considered the worlds leading heavyweight having in 2015 inflicted Klitschkos first defeat for 11 years.Everyones making a big deal out of the fight; its a good fight but Klitschko lost his last fight to Fury, the real champ is Fury, said DeGale, who on Jan. 14 in New York fights Badou Jack in an IBF and WBC super-middleweight unification title fight.It doesnt really excite me. I want to see it but Id rather Anthony Joshua box Fury, thats all. Anthony Joshuas the man, a beast, hes the best heavyweight in the world now.I didnt mean to puut the fight down, just Id rather see Joshua fight the real champ.dddddddddddd Anthony Joshua is a beast, hes a very good fighter, and is going to go on to be a superstar.Asked if Furys win over Klitschko would reduce the credit Joshua may receive in the event of victory, he responded: I think it is watered down, I think it will be. [But] I expect Joshua to stop Klitschko, and look good in doing it.Victory on Jan. 14 would establish DeGale -- beyond doubt -- as the worlds leading super-middleweight, and give the IBF champion another title from the WBC.His rival George Groves recently confirmed he is to challenge WBA champion Fedor Chudinov, leaving them on course for a rematch later in 2017 in another significant British fight that would unify three of the 168lb world titles.Best of luck to him, said DeGale, 30. If hes going to win a world title this is going to be his chance, against Chudinov.Hes had three world title shots, and hes failed, been knocked out [twice]. We dont get along but hes a good fighter. Hopefully he can win this, for Britain, I can come through mine, and itll be a massive, massive fight next year. ' ' '