Nike, Tag Heuer and Porsche have suspended ties with Maria Sharapova after the five-time Grand Slam winner announced she had failed a drugs test. The 28-year-old revealed on Monday that she had tested positive following a drugs test taken after her quarter-final defeat against Serena Williams at the Australian Open in January.Meldonium, which Sharapova said she had legally taken throughout her career, was placed on the banned list by the World Anti-Doping Agency (WADA) at the beginning of the year following evidence of its use by athletes with the intention of enhancing performance. Sharapova fails drugs test Maria Sharapova reveals she tested positive for the banned substance meldonium at Australian Open The Russian player claimed she did not realise the substance was illegal, but took full responsibility for her actions.But the International Tennis Federation (ITF) said Sharapova had been informed of the positive test on March 2 and she will be provisionally suspended from March 12.Nike, who have been associated with Sharapova since she was 11 years old, said in a statement: We are saddened and surprised by the news about Maria Sharapova.We have decided to suspend our relationship with Maria while the investigation continues. Sharapova faces the media during Mondays press conference We will continue to monitor the situation.A statement from Tag Heuer read: Maria Sharapova was under contract with TAG Heuer until December 31, 2015. We had been in talks to extend our collaboration.In view of the current situation, the Swiss watch brand has suspended negotiations, and has decided not to renew the contract with Ms Sharapova. Sharapova was named Porsches new brand ambassador in 2013 German sports car manufacturer Porsche said in a statement: We are saddened by the recent news announced by Maria Sharapova. Until further details are released and we can analyze the situation, we have chosen to postpone planned activities.However, French mineral water giant Evian is standing by Sharapova, preferring to follow developments as the story unfolds.In a statement, it said: We were surprised by the announcement of Maria Sharapova during her press conference on March 7, 2016. Evian awaiting developments after Sharapova fails drugs test Evian has been a partner of Maria Sharapova for many years and, until now, we have maintained a trustworthy, professional relationship. Evian attaches great importance to health, to integrity and to transparency, and we will follow closely the development of the investigation.Sharapova remains hopeful she can return to the sport after serving her punishment.The former world No 1 said: I let my fans down, I let the sport down that I have been playing since the age of four and I love so deeply.I know with this I face consequences. I dont want to end my career this way and I really hope I will be given another chance to play this game. Sharapova on the podium at London 2012 after she was beaten to the gold medal by Serena Williams Russian tennis chief Shamil Tarpishchev, however, expects Sharapova to represent her country at this years Olympics in Brazil despite being provisionally suspended.I think this is just a load of nonsense, Tarpishchev, president of the Russian Tennis Federation, said in an interview with the TASS news agency.The sportsmen take what they are given by the physiotherapists and by the doctors. 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Stitched China Jerseys . -- The boos poured down on Tom Brady and the New England Patriots at the end of a horrible first half. China Jerseys Review . Klitschkos management company says the bout will be the Ukrainian fighters 25th world championship fight. The 1.83-meter (6-foot) Leapai defeated the previously unbeaten Denis Boytsov in November to become the WBOs mandatory challenger. Drivers still in contention for the Chase for the Sprint Cup probably dont want to see the hand theyve been dealt for the race Sunday at Talladega Superspeedway.They know that unless they have won either of the first two races of the quarterfinal round of 12 -- Jimmie Johnson won Charlotte, Kevin Harvick won Kansas -- they have no guarantees and dont necessarily control their own destinies to keep from being among the four eliminated.A win Sunday automatically advances a driver to the semifinal round of eight. The four winless drivers lowest in points dont advance.With drivers needing to rely on others for a good push and not to make a mistake to cause a big crash, drivers have less control on their ultimate finishes at Talladega than any other Chase race.But drivers who have had two good races in the round have at least some room to survive bad fortune.This is how the race Sunday stacks up:Matt Kenseth (third on Chase grid)Points: 29 points ahead of eighth/ninthClinch if he finishes: 28thOutlook: Only once in his past 10 Talladega races has Kenseth finished worse than 30th. His worst finish this year in restrictor-plate races was 28th. That would get him in. Hes in good shape.Kyle Busch (fourth)Points: 27 points ahead of eighth/ninthClinch if he finishes: 26thOutlook: Busch can look at recent restrictor-plate races -- a third and a pair of seconds -- and feel good. He can look at 2014 when he had what seemed like a comfortable 25-point cushion on eighth but then was tagged by Austin Dillon while riding around in the back and got eliminated. He probably cant forget 2014 -- he recently mentioned that he still hasnt gotten an apology from Dillon -- and has to be nervous.Carl Edwards (fifth)Points: 24 points ahead of eighth/ninthClinch if he finishes: 23rdOutlook: Edwards will want to make moves to run well and make sure he doesnt get involved in anyones mess -- or create a mess as he did in May. If he resists and just stays in a line, he might be better off.Kurt Busch (sixth)Points: 17 points ahead of eighth/ninthClinch if he finishes: 16thOutlook: He has battled his way to his Chase finishes, earning a finish either as good or better than his cars at the start of the race. The good thing for Busch is that he doesnt have any teammates on this list, so he could have lots oof help and get the push he needs to get into the Chase.ddddddddddddMartin Truex Jr. (seventh)Points: 13 points ahead of eighth/ninthClinch if he finishes: 12thOutlook: Truex nearly won the Daytona 500. But just as Busch has the benefit of having all his teammates focused on him getting into the Chase, Truex might not get as much help when it comes to the final laps at Talladega as all five Toyota drivers look to advance.Joey Logano (eighth)Points: 0 points ahead of ninth, 13 points behind seventhClinch if he finishes: Second if winner is not Dillon, Hamlin, Brad Keselowski, ElliottOutlook: Logano is the defending winner of the Talladega fall race, so he knows he can win it. But last year, he had no pressure having won the previous two races. This time, he has all the pressure.Austin Dillon (ninth)Points: 0 points behind eighth, 13 points behind seventhClinch if he finishes:?Second if winner is not Logano, Hamlin, Keselowski, ElliottOutlook: He has top-10s in all three restrictor-plate races this year. If he earns another top-10, he will have a decent shot, assuming another one of the Chase drivers gets involved in the big one.Denny Hamlin (10th)Points: Six points behind eighth, 19 points behind seventhClinch if he finishes: FirstOutlook: Hamlin won the Daytona 500. Unfortunately, that car is still at Daytona as part of the track tour. Bitten by mechanical issues in the opening two Chase races of this round, Hamlin hopes the scales of racing luck balance out at Talladega.Brad Keselowski (11th)Points: Seven points behind eighth, 20 points behind seventhClinch if he finishes: FirstOutlook: Keselowski has won the last two restrictor-plate races. In 2014, he won in a must-win situation at Talladega. The law of averages would say he wont repeat that again. But the law of averages hasnt caught up with Harvick as far as clutch performances, and Keselowski can be just as clutch.Chase Elliott (12th)Points: 25 points behind eighth, 38 points behind seventhClinch if he finishes: FirstOutlook: Elliott needs to either win or run well and have lots of help. There would be no better time for him to earn his first win. He finished fifth at Talladega in May. ' ' '