Nigeria's Folashade Abugan has been stripped of her 400metres silver medal after failing a drug test at the Commonwealth Games.
FINA has ruled that seven Russian swimmers, including breaststroke medal hopeful Yulia Efimova, are ineligible to compete in the Rio Olympics, world swimming's governing body said on Monday.
Kelly Fairweather of South Africa has taken over as the CEO of the International Hockey Federation as successor to Christophe Troendle, who is retiring as FIH's Director General at the end of this month.
Here are some reactions from the world of sport on of widespread state-sponsored doping by Russian athletes at the 2014 Sochi Olympics.
Reedie, 75, has been involved with WADA since its foundation in 1999 and was elected its third president in 2013.
Maria Sharapova will attend an International Tennis Federation anti-doping hearing in London on Wednesday, British media reported, with the Russian facing a possible ban of up to four years for failing a drugs test at the Australian Open.
BCCI had expressed concern about security during the World Cup in a letter to the ICC after last month's attack in the disputed region that killed 40 Indian paramilitary troops.
A day after unheralded grappler Sakshi Malik opened India's medal count with a dramatic bronze-winning effort, shuttler P V Sindhu is all set to further showcase Indian women's capabilities at the Olympic on Thursday.
Landis issued a press release calling Pound's comments "defamatory and absurd" and accusing Pound of branding him as guilty.
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.
The World Anti-Doping Agency (WADA) said on Wednesday that some of the athlete data leaked by a Russian cyber espionage group has been changed from its initial form, and has asked "affected parties" for feedback on any inaccuracies.
IAAF president Sebastian Coe says there has been no cover up of Russian doping cases despite the latest leaked documents appearing to show that officials of athletics' governing body were discussing how to suppress news of positive tests.
The stars tested negative after their urine samples were re-tested for the newly-discovered steroid THG.
Following badminton World No 1 Lee Chong Wei's provisional ban, Rediff.com brings you ten top sports persons who gave in to drugs - one of the mighty perils that has affected modern sporting culture.
The ICC CEO brushed aside concerns over a potential clash with WADA on the whereabouts clause, saying it is not an issue any more.
The suspense over wrestler Narsingh Yadav's participation in the Rio Olympic Games was prolonged further after the National Anti-Doping Agency deferred its final verdict on the doping scandal to Monday.
Double Olympic champion Valerie Adams feels the suspension on Russian athletes from the Rio Games is a positive step towards eradicating doping and the New Zealand shot putter has called for a life ban on drug cheats.
The Russian athletics federation has accepted its ban from the sport in the wake of widespread doping revelations, the International Association of Athletics Federations (IAAF) said on Thursday.
11-time Indian 100m champion Adille Sumariwalla says it was wrong to suspend athletes who went missing when WADA officials came calling.
The Kremlin said on Monday it welcomed the decision by the International Olympic Committee (IOC) which allowed clean Russian sportspeople to compete in next month's Rio Olympics.
American Ursula Papandrea will continue to lead the sport's governing body as Acting President.
Out-of-favour India hockey goalkeeper Adrian D'Souza has tested positive for a banned substance in a random test conducted by the National Anti-Doping Agency (NADA) during the inaugural World Series Hockey which concluded early this month.
"The thought of somebody's livelihood, career or legacy to be ripped to shreds for an accident is a terrible thought," said the American.
Kenya reacted angrily on Tuesday to calls by the German Athletics Federation (DLV) that its athletes be barred from the Rio Olympic Games due to doping concerns.
The US needs to make a more serious commitment to the fight against performance enhancing drugs.
Lamine Diack, the former president of the International Association of Athletics Federations (IAAF), was responsible for organizing and enabling the conspiracy and corruption that took place in athletics' governing body, an independent commission of the World Anti-Doping Agency (WADA) said on Thursday.
Pakistan fast bowler Mohammad Asif is challenging his positive test result for a banned substance during IPL.
Wrestling Federation of India, on Friday, conceded that it was not being able to convince the Court of Arbitration for Sports' panel that grappler Narsingh Yadav was a victim of conspiracy and sabotage, and that was why he lost the case and was ejected from the Rio Olympics with a four-year ban.
Key points from the independent commission of the World Anti-Doping Agency (WADA) report, released on Wednesday, and from comments made by co-author of the report, Dick Pound at a news conference.
Russia's men's quadruple sculls crew have been banned from the Rio Olympics after one of their members failed a doping test in May, the world governing body FISA said on Friday.
Lamine Diack, the former head of world athletics, has been placed under formal investigation in France on suspicion of corruption and money laundering following a complaint from the World Anti-Doping Agency (WADA).
Factbox on Russia's Maria Sharapova who was banned until January 2018 on Wednesday after testing positive for the banned drug meldonium at this year's Australian Open.
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.
The American athlete will miss the Athens Olympics after her appeal against a two-year drugs ban was dismissed
Triple Tour de France champion Chris Froome says he has "no issue" with his private medical records being leaked in a cyber attack by Russian hackers on the World Anti-Doping Agency (WADA).