Former triple Olympic champion Marion Jones was cleared of doping on Wednesday after her 'B' sample tested negative for the banned blood-boosting drug EPO.
Doping could cast a shadow over Kenya at the 2016 Rio Olympics unless the East African nation implements credible systems to root out drugs cheats, said veteran Kenya-based coach Brother Colm O'Connell.
The ruling by the CAS, sport's highest tribunal, will be taken into consideration by the International Olympic Committee (IOC) as it ponders whether to impose a blanket ban on Russia from all sports.
Batsman Jesse Ryder will return to top-level cricket in New Zealand next week, ready to put behind him a year in which he served a six-month doping ban and survived an assault that left him in a coma with serious head injuries.
Indian weightlifter B Prameelavalli said she pulled out of the Commonwealth Games because of an injury and the positive dope test was a surprise for her.
Rider Stefan Schumacher's admission that he had used banned substances was welcomed by the German Olympic Sports Confederation (DOSB) and national cycling federation (BDR) on Friday.
The Korea Olympic Committee has turned down Park Tae-hwan's appeal to overturn a controversial doping suspension, leaving the swimmer's hopes of competing at the Rio Games in the hands of the Court of Arbitration for Sport (CAS).
The Middlesbrough defender tested positive for the banned anabolic steroid dianabol after a UEFA Cup tie.
The Athletics Federation of India (AFI) has pulled out dope-flunked shot putter P Udaya Laxmi from the home squad for the ongoing Asian Championships in Pune after testing positive for a banned substance.
A summary of sports events and persons who made news on Thursday.
American Gatlin, bronze medallist at the London Games after a four-year doping ban, ran 9.94 seconds to edge Usain Bolt by 0.01 in a race that showed the Jamaican has yet to fully recover from the hamstring injury that dogged him earlier in the season.
This year Olympic Games could feature an athletics programme without two of the sport's most powerful nations -- Russia and Kenya -- while a third, Ethiopia, is under immense pressure to show it has adequate anti-doping measures.
Arjuna award-winning Indian boxer Akhil Kumar has suggested setting up sports medicine centres all over the country to check incidents of doping as he feels athletes often end up using banned drugs due to ignorance.
The coach of Jamaican sprinters Asafa Powell and Sherone Simpson said on Tuesday they were not to blame after the Olympic medallists failed dope tests.
Mirabai Chanu was the historic success story of Indian weightlifting in a blemish-free 2017 in which the sport managed to stay clear of the dope scandals that have destroyed its credibility in the past.
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.
Out of those 13 won medals at the Games in Hyderabad.
Narsingh Yadav's hopes of competing in the Rio Olympics appeared bleak after he failed a second dope test, which was conducted on his samples on July 5.
In the wake of the doping bans imposed on Shoaib Akhtar and Mohammad Asif, the PCB will conduct a review of central contracts awarded to players.
Chris Evert said on Monday she was stunned to hear that Maria Sharapova failed a doping test, but not by the fact that there is doping in tennis, claiming that she knew players who doped during her career.
The 27-year-old gold medallist in the 20km race-walk event at the National Inter-State Championships in June, has been asked to return home from Budapest after Athletics Federation of India (AFI) received a notification from NADA regarding the athlete's "whereabouts failure".
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.
Russia was the leading doping offender in global sport during 2014, followed by Italy and India, the World Anti-Doping Agency said on Wednesday.
Commonwealth Games gold medallist weightlifter Geeta Rani's confirmatory 'B' sample test has also returned positive for a banned substance and she is set to end her career in ignominy as she faces the prospect of a lengthy ban from the sport.
Five nations, including Russia, whose doping records have risked weightlifting's place on the Olympic schedule have been limited to just two athletes for the 2020 Tokyo Games by the sport's governing body, according to a document seen by Reuters.
The soft-spoken Rudisha, belonging to the Masai tribe, was critical of runners tarring the country's image.
World Anti-Doping Agency chairman Dick Pound has criticised the decision to allow Australia leg spinner Shane Warne to play in charity matches during a one-year doping ban.
Olympic champion Leisel Jones and former world champion Geoff Huegill will lead a 52-strong Australian swimming contingent, including 31 debutants, in the Delhi Commonwealth Games this October.
Alberto Contador's Saxo Bank-Sungard team could be thrown out of cycling's World Tour after the Spaniard was given a two-year doping ban by the Court of Arbitration for Sport, the International Cycling Union (UCI) said on Friday.
Nike Inc shut down its Nike Oregon Project training group on Thursday, following the recent four-year ban of founder and coach Alberto Salazar by the US Anti-Doping Agency.
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.
Yulia Stepanova, an international runner who was herself suspended for doping offences, and her husband Vitaly, a former Russian anti-doping agency official, secretly recorded Russian coaches and athletes over almost two years describing how they used performance-enhancing drugs.
Moroccan 1,500 meters runner Amine Laalou has not run in his heat at the London Olympics, and was reported to have tested positive for doping.
"Simona Halep, a 31-year-old Romanian tennis player, has been provisionally suspended under Article 7.12.1 of the 2022 Tennis Anti-Doping Programme (TADP)," the body said in a statement.
Jamaica's 200 metres world champion Veronica Campbell-Brown has tested positive for a banned diuretic, sources close to Jamaican athletics said.
The Court of Arbitration for Sport has cleared the way for former Olympic swimming champion Park Tae-hwan to compete at the Rio Games after upholding his appeal against a Korean Olympic Committee doping ban, Yonhap news reported on Friday.
Russia's exclusion from next month's Paralympic Games in Rio is a different situation from the IOC's decision to allow some Russian competitors to take part at the Olympics, International Olympic Committee President Thomas Bach said on Monday.
In a double jolt for Indian boxing, middle-weight pugilist Manjit Singh has been suspended for two years after failing a dope test while fellow glovesman Baljeet Singh's 'A' sample has also tested positive.
Justin Gatlin won his first title since returning from a four-year doping ban with victory in the 60 metres at the world indoor championships on Saturday as the red-hot Americans grabbed four gold medals and a world record in Istanbul.
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