The 29-year-old former French Open finalist failed the out-of-competition test in February after a urine sample was found to contain letrozole - a substance used in the treatment of breast cancer which is also on the banned drug list of the World Anti-Doping Agency (WADA).
Sri Lanka sacked its entire sports medical unit over allegations that staff were linked to banned steroids used by cricketers and national athletes, officials said Tuesday. According to AFP, Sports Minister Mahindananda Althugamage ordered the complete overhaul of the unit following positive tests for cricketer Upul Tharanga, national rugby players and boxers.
American sprinter Sha'Carri Richardson, expected to be one of the biggest draws at the Tokyo Olympics, will miss the 100 metres at the Games after accepting a one-month ban for testing positive for cannabis during her US trials victory in June.
Taking a tough stand against suspected dope offenders, the Wrestling Federation of India has withdrawn the names of at least six medal winners at the just concluded Junior National Wrestling Championship after they failed to provide samples for tests.
The panel will recommend if they are to be penalised for testing positive for the banned steroid nandrolone.
Heavyweight world boxing champion Tyson Fury has tested positive for cocaine, ESPN reported on Friday citing a leaked letter sent by the Voluntary Anti-Doping Agency (VADA).
Navjeet Dhillon, a Commonwealth Games bronze medallist from 2018, had tested positive for a metabolite of the anabolic steroid Dehydrochloromethyltestosterone (DHCMT).
The World Anti-Doping Agency (WADA) will review the reasons behind the three-month ban handed to Chinese Olympic swimming champion Sun Yang and decide whether to appeal the decision to the Court of Arbitration for Sport (CAS).
Russia was stripped of their women's 4 x 400m relay silver medal from the London 2012 Olympics after Antonina Krivoshapka tested positive for drugs in the re-testing of her sample, the International Olympic Committee said on Wednesday.
The Pakistan fast bowler said his target is to remain fit for the forthcoming Test series against South Africa, India and Australia.
The Wrestling Federation of India, on Monday, threw its weight behind Narsingh Yadav, whose Olympic participation is in serious doubt after a failed dope test, saying the grappler is a victim of conspiracy.
"The IAAF's delaying publication for so long without good reason is a serious encroachment on the freedom of publication," the researchers said in a statement.
The National Accreditation Board for Testing and Caliberation Laboratories certified the SAI Dope Control Centre in Delhi.
A German TV documentary alleging widespread doping and cover-ups among Russian track and field competitors contains 'a pack of lies', the country's athletics federation president said.
The decision not to impose a blanket ban was not uniformly welcomed with Travis Tygart, head of the United States Anti-Doping Agency, describing it as "yet another devastating blow to clean athletes."
The Chinese swimmer is competing at the world championships under the shadow of a WADA appeal against governing body FINA's decision to clear the 27-year-old of wrongdoing during the random drug test last September.
A member of the drugs inquiry tribunal said fast bowlers Shoaib Akhtar and Mohammad Asif could escape without a ban.
Pakistan bowler Mohammad Asif protested his innocence on Monday after it was confirmed he had failed a dope test during the Indian Premier League earlier this year.
The Indian hockey coach said Tejbir Singh was replaced due to his hamstring injury and he had no knowledge of the doping angle.
Russian Yulia Efimova, who won two Olympic silver medals this month after being cleared to compete in Rio following a doping ban, has compared swimming in the Games to being at war. Initially excluded from the event because of her doping record, the 24-year-old won a last-minute legal challenge to the Court of Arbitration for Sport (CAS) and finished second in the 100 and 200 metres breaststroke in Brazil. "I felt under pressure from the sportsmen, the fans, the press. This was awful and it was not like being at an Olympics, which usually unites people. This was not a competition, but a war - a old war," Efimova told a news conference on Wednesday.
Former world number one Maria Sharapova made a winning comeback to the tour on Wednesday following her 15-month doping ban, beating Italian Roberta Vinci in straight sets in the first round of the Stuttgart Grand Prix.
Warne's management released a brief statement saying that he passed away in Koh Samui, Thailand.
The Olympic Council of Asia has urged Uzbekistan to investigate doping in their delegation after a second athlete was disqualified from the Asian Games on Wednesday for the same banned stimulant.
Former 100 metres world record holder Asafa Powell was banned for 18 months by a Jamaican anti-doping disciplinary panel on Thursday after he tested positive for a banned substance last year.
Coach Eteri Tutberidze said she was certain Valieva was 'clean and innocent'
A unanimous verdict of not guilty was announced by the Greek Court of Appeal for the Sydney 2000 Olympic medallists, who had in May been sentenced to 31 months in jail for staging a motorcycle crash to avoid a doping test before the 2004 Athens Olympics.
Russia's Yulia Efimova faces a life ban after the breaststroke specialist tested positive for meldonium, with her temporary suspension confirmed by the All-Russian Swimming Federation (ARSF) on Thursday.
Factbox on American Justin Gatlin who won the 100 metres gold at the World Athletics Championships on Saturday at the age of 35.
'He (Prithvi) is a fighter and will definitely come out of it. He has worked hard (to reach the top)'
IAAF said explanations provided by Costas Kenteris and Katerina Thanou for missing tests in Tel Aviv, Chicago and Athens were unacceptable.
Costas Kenteris and Katerina Thanou sent explanations to the IAAF why they missed doping tests at Olympics.
Forty years after its first edition, the world athletics championships get underway in Budapest on Saturday with over 2,000 athletes from 202 countries taking part over nine days of what could be record-breaking action.
Former Brazil striker Romario was named player-coach of Vasco da Gama on Thursday, two days after announcing he had failed a dope test while playing for the team in October.
The IOC seems reluctant to ban the entire Russian team from next month's Olympic Games, despite mounting concern over doping violations, the co-author of the report that led to Russia's ban from track and field events said on Wednesday.
Two-time defending champions Spain's preparations for their Euro last 16 match with Italy were disrupted as 10 players were forced to take an anti-doping control by UEFA on Saturday.
France's Euro 2016 hopes suffered a setback on Tuesday when first-choice centre back Raphael Varane was ruled out of the tournament through injury.
The MP said the government should stand by the entertainment industry when some people are trying to tarnish its image.
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