Here are some reactions from the world of sport on of widespread state-sponsored doping by Russian athletes at the 2014 Sochi Olympics.
Russian medallist at the Pyeongchang Winter Olympics is suspected of having tested positive for a banned substance
Home favourite Su Yiming of China made his Olympic debut on Sunday and received a standing ovation in return.
The Russian government and security services will overcome security threats and can guarantee safety at the 2014 Winter Olympics in the Black Sea resort of Sochi, Prime Minister Dmitry Medvedev said.
Richardson was banned last year for a month for testing positive for cannabis
Sharath Kamal's progress to the third round of the men's singles in table tennis was the only bright spot on another gloomy day for India at the Tokyo Olympics on Monday.
At their medal ceremony, the players team sang the Russian anthem over the sound of the Olympic anthem at the Gangneung Hockey Centre despite being barred from having their flag raised or anthem played.
Tennis matches at the Ariake Tennis Park will begin from 3pm local time (0600 GMT) from Thursday, governing body International Tennis Federation said after requests from players who had struggled in the stifling weather.
Valieva was virtually unknown a few months ago but burst onto the international figure skating scene this season
Speed skating - Swings wins mass start, brings first Belgian Winter gold in 74 years.
IOC is desperate to avoid the sporting event being torn asunder by the bloody conflict unfolding in Ukraine.
The world number one had arrived in Tokyo aiming to become the first man to win all four majors and an Olympic gold medal in the same calendar year. But that quest came to an end after he was beaten by fifth-ranked German Alexander Zverev in Friday's semi-final.
Russian anti-doping officials have for the first time acknowledged a massive doping conspiracy in their country that has rocked world sport, the New York Times reported on Tuesday.
Several anti-doping agencies, including those of the United States and Canada, want a complete ban on Russia competing at the Rio Olympics if next week's key report into allegations of state-backed doping at the 2014 Sochi winter Olympics is damning, they said on Saturday.
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.
Athletes from Russia and Belarus, Moscow's closest ally in the 2022 invasion of Ukraine, are barred from the Paris Games except for the few who will compete as neutral athletes without flags or anthems.
Russian Prime Minister Dmitry Medvedev has suspended Deputy Sports Minister Yury Nagornykh, who was named in a report on the doping of Russian athletes at the 2014 Sochi Olympics, the government said on Monday.
The federation's troubles have piled up in recent months, with some of its officials and senior coaches having found themselves embroiled in doping scandals.
Novak Djokovic launched his bid to stay on course for a Golden Slam with a clinical 6-2, 6-2 win over 139th-ranked Hugo Dellien of Bolivia on Saturday, as sweltering conditions in Tokyo took a toll on the players on the opening day of tennis at the Games.
The International Olympic Committee (IOC) last year suspended AIBA, the International Boxing Association, over issues surrounding its finances and governance and took over the boxing competition and qualification for the 2020 Olympics.
All 11 Russian boxers who qualified for the Rio Olympics have been given the all clear to compete at the Games, the International Boxing Association (AIBA) said on Thursday.
Russian athletes are cleared to compete at next year's summer Olympics will do so without their country's flag and anthem.
Russia has named a track and field team for the Rio Olympics which includes gold medallists Yelena Isinbayeva and Ivan Ukhov among 68 athletes who are hoping an IAAF ban on them competing will be lifted by sport's highest court later this month.
Novak Djokovic eased into the last four with a commanding performance over Japan's Kei Nishikori but world number two Daniil Medvedev bowed out of the men's singles at the Tokyo Olympics.
Iivo Niskanen put on a brilliant display of cross-country skiing to win gold for Finland at the Beijing Games
The Russians had appealed their exclusion from the Games by the International Olympic Committee (IOC) over the doping scandal from the 2014 Sochi Games.
Promoters of the Russian F1 Grand Prix, ROSGONKI, said that the contract for the Sochi race was signed in 2010, long before the start of WADA's probing and are confident that the race will be held next year as well
Mahuchikh won gold with a leap of 2.02 metres on Saturday
Snow blankets Games, delays Gu's return to competition
Bach said the International Olympic Committee had limited means of action.
All the top action from Day 6 of the 2022 Winter Olympic Games in Beijing on Thursday.
Russian doping whistleblower Yulia Stepanova's application to compete as an individual athlete has been accepted, the International Association of Athletics Federations (IAAF) said on Friday.
Norway's Birk Ruud claimed the first men's freeski Big Air Olympic gold
Russian pole vaulter Yelena Isinbayeva was elected to the International Olympic Committee (IOC) athletes' commission on Thursday, despite being barred from the Rio Games over doping allegations.
Bach said Tokyo was 'the best-prepared Olympic city,' in remarks at the start of a three-day virtual IOC session.
A look at the country's athletes' showing at the Tokyo Olympics on Friday, July 30.
Paralympics boss Andrew Parsons expressed disgust that Russian authorities had let down the country's clean athletes
As Paris makes final preparations for the Summer Olympics, the grand opening ceremony along the river Seine on Friday has created an unprecedented security challenge that organisers hope won't dampen the party vibe
Megan Jones and Celia Quansah, a same-sex couple, will compete together at the Tokyo Olympics.
The International Olympic Committee (IOC) dented any slim hopes that Russian athletes might have had of competing at the Rio Games in August by backing the IAAF's decision to uphold its ban on the country for systematic doping.
