Nigerian Osayemi Oludamola was stripped of the women's 100 metres Commonwealth Games gold medal on Tuesday after her B sample confirmed a positive test for a banned stimulant, the Games Federation said.
Asian champion shot-putter Manpreet Kaur has been caught in the dope net after testing positive for a banned stimulant, a massive embarrassment for the country which might lose the gold meda clinched by her earlier this month.
Russia was banned from taking part in or hosting world championships, including the World Cup as part of doping sanctions imposed by WADA.
The world No. 1 said the players he plays with are clean.
Kamila Valieva is one of the youngest Olympic athletes to test positive for a banned substance
Talented Indian opener Prithvi Shaw, who slammed a double hundred on his return to competitive cricket, said he was keen to get back to form quickly after spending eight months in the wilderness due to a doping offence. Shaw was handed a back-dated eight-month suspension in July for a doping violation after ingesting a prohibited substance Terbutaline.
Inzamam said it would put tremendous pressure on the remaining players who would have to make extra efforts.
The International Olympic Committee has formally excluded Albanian weightlifter Hysen Pulaku from the London Olympics after he failed a doping test.
Australia's 2011 Tour De France winner Cadel Evans has admitted meeting the Italian doctor at the heart of the Lance Armstrong scandal more than a decade ago but said they never discussed doping.
Beijing Olympics 100 metres hurdles champion Dawn Harper-Nelson has been banned for three months after she tested positive for the banned diuretic hydrochlorothiazide, the United States Anti-Doping Agency (USADA) said on Tuesday.
Rafael Nadal is convinced that none of his rivals are taking performance-enhancing drugs and believes that people who have accused him of doping have 'personal problems'.
Sprinter Dwain Chambers won a silver medal in the world indoor championships on Friday, finishing second behind Nigeria's Olusoji Fasuba and level with Kim Collins of St Kitts. The 29-year-old, who is trying to resurrect his athletics career following a two-year doping ban imposed in 2003, clocked a personal best time of 6.54 seconds, the same as Collins who was also awarded silver and three hundredths behind Fasuba.
Sprinter Dwain Chambers and cyclist David Millar were cleared to compete in this year's London Olympics after the British Olympic Association's (BOA) lifetime Games ban on drug offenders was overturned by the Court of Arbitration for Sport on Monday.
The Canadian set the tournament alight with a scintillating, three-set win over Maria Sharapova on Tuesday after her outspoken comments about the Russian returning from her 15-month doping ban, including calling her a cheater.
Russia said on Friday it is ready to do everything from a legal point of view to defend Russian athletes if they are banned from taking part in the Rio Olympics over doping allegations.
Five Jamaican athletes have tested positive for a banned substance, a Jamaican doping official told Reuters on Friday. 'I can confirm that five athletes tested positive for a minor substance, but a further announcement will be made,' an official said on condition of anonymity.
Sri Lanka wicketkeeper Kusal Perera has had all anti-doping charges brought against him dropped by the International Cricket Council (ICC) after the Qatar-based laboratory that conducted the test withdrew its initial finding.
The World Anti-Doping Agency (WADA) faces a challenge to tackle cheating in sport while it has an annual budget of less than the income of many top athletes, its president Craig Reedie said. Lack of money could equally prove a handicap for a proposed independent testing authority, said Reedie, who also expressed support for global athletics chief Sebastian Coe and said WADA was in a state of "peace not war" with Coe's troubled sport. "I could do with a lot more money," Reedie said in an interview with Newsweek published on Saturday. The Scot said governments decided their own contributions to WADA's budget, which were then matched by the International Olympic Committee (IOC). "The total is not nearly enough," he said. "WADA's total annual budget of $30 million a year is exceeded by many athletes around the world who make more than that themselves in one year."
Hosts India were in for a major shock on Wednesday when their athlete Rani Yadav failed a doping test at the 2010 Commonwealth Games.
Athletics' governing body came under renewed fire on Tuesday following disclosures that top officials were aware of a potentially serious doping problem among Russian athletes as far back as 2009.
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.
So prior to their Melbourne Park rematch, former champion Sharapova said she was primed and ready for another drawn out dog-fight against the 14th seed.
Dope-tainted weightlifter Sanamacha Chanu faces a life ban after her 'B' sample test, conducted by the National Anti-Doping Agency, also turned out positive for a banned stimulant. The 'A' sample of 31-year-old Chanu, one of the most successful woman weightlifters in the country, which was taken during the trials for the Commonwealth Games in August had tested positive for methylhexaneamine.
World No 1 Federer's 36-set record winning streak in Grand Slam tournaments was however snapped by Tommy Robredo in the French Open quarter-finals.
Australia will not apologise to China after Mack Horton called his rival and fellow Olympic swimming gold medallist Sun Yang a ''drug cheat'', delegation head Kitty Chiller said on Tuesday.
Argentine Guillermo Canas tamed big-hitting Croat Ivan Ljubicic 7-5 6-2 to reach the final of the Sony Ericsson Open on Friday, underlining his return to top form following a 15-months doping ban.
Sushil, who is yet to make a formal statement on the matter, put out a cryptic tweet after the controversy broke out.
China's top backstroke swimmer Ouyang Kunpeng has been banned for life for doping, officials confirmed on Friday, dealing the host nation an embarrassing blow just 42 days before the start of the Beijing Olympics. Ouyang tested positive for the anabolic steroid clenbuterol, Zhao Jian, head of the anti-doping office at the Chinese Olympic Committee (COC) confirmed.
The IOC said all four -- Victoria Valyukevich, a triple jumper who was eighth in the women's competition, hammer throwers Gulfiya Khanafeeva and Mariia Bespalova, and weightlifter Khadzhimurat Akkaev, who did not compete due to a back injury, had tested positive for anabolic steroid turinabol.
AFI President Adille Sumariwalla raised the possibility of more athletes outside the national camp taking to banned drugs and laid a lot of blame on the district and state level coaches.
Thirty-four past and present players from Australian Rules team Essendon Bombers, one of the country's richest and most storied football clubs, were issued two-year bans for doping on Tuesday in a ruling that stunned the sports-mad nation.
Croatian tennis player Marin Cilic has been banned for nine months after testing positive for the stimulant nikethamide, the International Tennis Federation (ITF) has said.
Tainted wrestler Narsingh Yadav was exonerated of doping charges by the National Anti-Doping Agency panel, probing the positive tests on his urine samples on Monday. It ruled "there is no negligence on the athlete's part and he is a victim of sabotage".
Two leading Indian athletes -- Mandeep Kaur and Juana Murmu have been suspended and face the prospect of a two-year ban after flunking an out-of-competition dope test.
The former world 100 metres record holder was banned for doping offences related to the BALCO laboratory in California.
Russia claimed the IAAF's decision to continue its ban of Russian athletics on Friday was unfair and threatened legal action, while the rest of the world welcomed the move and urged the IOC not to go against it.
Spanish tennis maestro Rafael Nadal has defended his training methods and outrightly rejected to have used any banned substance in order to speed up his recovery from injury.
India play the opening T20I against New Zealand on Friday.