A revised World Anti-Doping Code, doubling the bans for cheats in sport, was adopted on Friday.
Valieva was virtually unknown a few months ago but burst onto the international figure skating scene this season
A hearing in the case of Russian curler Alexander Krushelnitsky, who tested positive for the banned substance meldonium, has yet to be scheduled, the Court of Arbitration for Sport (CAS) said on Wednesday.
The IOC said it had not detected any significant abuse of clenbuterol after finding "very low levels" of the banned substance during re-testing of samples from the Beijing Olympics.
Russia will miss the World Athletics Championships for the second time in a row after the sport's governing body the IAAF extended the ban against country's federation.
Chinese Olympic women's swimmer Chen Xinyi tested positive for a banned substance at the Rio Olympics on August 7, state media said on Friday citing the country's swimming association, the latest doping scandal to mar competition at the Games.
ICC cricket committee chairman Anil Kumble says the recommendation to ban saliva for shining the ball is only an interim measure and "things will go back to normal" once the coronavirus pandemic is brought under control. The Kumble-led panel recommended a ban on saliva to minimise the risk of infection. On Friday, the ICC, in its guidelines for resumption of the game, also suggested a bar on the practice.
'They often complained about the ill-treatment by their employer in Kuwait. They were not taken to a doctor also when they fell ill.'
Olympic 100 metres hurdles champion Brianna Rollins was handed a one-year suspension for failing to properly file whereabouts information for out-of-competition testing, the US Anti-Doping Agency said on Thursday.
A ban imposed on Russia's Paralympic team to compete in Rio is cynical and immoral, President Vladimir Putin said on Thursday, while saying that Moscow acknowledged its mistakes and would improve the national anti-doping system.
Jamaican sprinter Sherone Simpson, who tested positive for a banned substance last year, told a disciplinary panel on Tuesday that she saw no "red flags" before taking a supplement supplied by her trainer.
Russian race walker Lashmanova banned, to be stripped of 2012 London Olympics gold
Shakhtar Donetsk coach Mircea Lucescu admitted he went against UEFA's wishes in fielding midfielder Fred in Tuesday's Champions League qualifier despite being aware of a possible doping violation hanging over the Brazilian international.
The NIA had originally chargesheeted three persons in March 2023 and filed its supplementary chargesheet before the special court at Patiala House in New Delhi on Monday against 17 others, of whom 15 are from Maharashtra and one each from Uttarakhand and Haryana, it said.
A new Kenyan television programme that corroborates the findings from a 2012 German documentary alleging unethical doctors were providing banned drugs to athletes, has set off alarms at the World Anti-Doping Agency.
The players face a ban of one to two years under WADA regulations.
South Korea's Olympic badminton gold medallist Lee Yong-dae has been hit with a one-year ban for missing doping tests, the Badminton World Federation (BWF) said on Tuesday.
Vijay Singh has been cleared of doping by the PGA Tour despite admitting that he used a spray containing elements of a banned substance.
Russian Olympic medallist Alexander Krushelnitsky has denied taking a banned substance in a suspected doping case that has rocked the Pyeongchang Winter Games and could imperil Russia's efforts to regain its full Olympic status.
A doping scandal has resurfaced on the Indian athletics scene with two top women quarter-milers returning positive for a banned substance in tests conducted by the International Association of Athletics Federations.
American cyclist Lance Armstrong had admitted to doping in all of his seven Tour de France victories in his first interview since being stripped of the titles.
Commonwealth Games women's 100 metres gold medallist has tested positive for a banned stimulant, Games Federation chief Mike Fennell said on Monday. Oludamola's sample contained the banned stimulant methylhexaneamine, which was added to the World Anti Doping Agency's (WADA) list of banned substances for the first time this year.
Ryan Napoleon has been re-instated in the Australian swimming team for the Commonwealth Games after sport's top tribunal back-dated his three-month ban for a doping offence.
Weightlifter Sanjita Chanu once again finds herself embroiled in a dope controversy.
World 100 metres champion Justin Gatlin said on Tuesday he is "shocked and surprised" at doping allegations made against his coach Dennis Mitchell, like Gatlin a convicted doper, but added that he sacked him as soon as he heard about the issue.
The National Anti-Doping Agency's appeals' panel has exonerated middle-distance runner Shalu Chaudhary of doping charges and lifted her four-year ban after DNA testing revealed that her urine sample had either been tampered with or contaminated at the time of collection.
Malaysian shuttler Lee Chong Wei was a relieved man on Monday after being handed a backdated eight-month ban for doping by the Badminton World Federation, leaving him free to go for gold at the Rio Olympics next year.
Over 30 per cent of athletes who competed at the 2011 world championships admitted to having used banned substances in the past, according to a World Anti-Doping Agency-commissioned study released on Tuesday.
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.
Sangwan, 26, won the silver medal in 2017 Asian championship and made the World championship quarter-finals in 2016.
American rider Levi Leipheimer has been sacked by the Quick-Step Cycling Team after admitting he took banned substances as part of the US Anti-Doping Agency (USADA) investigation into doping in the sport.
Swimming's governing body FINA has insisted athletes are responsible for monitoring their own dietary supplements as it prepares to appeal a decision by Brazil not to sanction four swimmers who tested positive for a banned substance.
Seema had been given a four-year suspension by NADA's Anti-Doping Disciplinary Panel (ADDP) following the hearing on her positive test for banned performance enhancing drugs.
Suspended Indian wrestler Sumit Malik on Tuesday said he has no idea how a banned stimulant entered his body but admitted that he was on painkillers during the recent Olympic Qualifiers and had informed the world body about that before taking the mat.
Summary of sports persons and events in the news on Friday.
Russian steeplechaser Yulia Zaripova has been banned for two and a half years for doping offences, the Russian anti-doping agency RUSADA said (www.rusada.ru) on Friday.
Nine more kabaddi players were caught, on Thursday, for using banned steroids, taking the total number of dope flunked players who were tested early this month during the selection trials of the World Cup to 19.
The Indian Weightlifting Federation owes an explanation and an apology to the country for the dope scandals that may lead to the humiliation of a third international ban, an angry Sports Minister M S Gill said on Monday.
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