Dozens of Russian athletes who competed at the 2014 Sochi Winter Olympics, including at least 15 medal winners, were part of a state-run doping program.
Novak Djokovic barely got out of first gear but had more than enough in the tank to beat Briton Kyle Edmund 6-3, 6-3 in the second round of the Miami Open on Friday.
Here is the current state of play among the 28 Olympic sports.
PHOTOS from day three of the Wimbledon championships at the All England Lawn Tennis and Croquet Club in London on Wednesday.
John Day isn't the dark, twisted thriller it was meant to be, says Paloma Sharma.
The ATP issued the latest men's tennis rankings on Monday and the top 10 list remains unchanged with Serbian tennis ace Novak Djokovic still leading the rankings.
Serena Williams and Ekaterina Makarova sprinted into the semi-finals of the U.S. Open on Wednesday but marathon man Kei Nishikori had to go the distance to upset Stan Wawrinka and become the first Japanese man into the last four of a grand slam in 81 years.
A long measure of Grand Slam patience paid off for Peng Shuai of China, who reached the semi-finals of the US Open on Tuesday by routing Swiss teenager Belinda Bencic 6-2, 6-1 in the Flushing Meadows heat.
Nadal, who got a first-round bye, defeated Richard Gasquet 6-3, 6-4 to advance.
A summary of sports events and persons who made news on Sunday
A day after celebrating his 36th birthday, Federer played the aggressive game that has propelled him to five titles, including two grand slams, this year, attacking the net and rocketing second serves.
New world 10,000 metres champion Mo Farah brushed the sleep from his eyes and forced his tired legs around 15 laps of the track to qualify for the 5,000 final on a sunny Tuesday morning at the Luzhniki in Moscow.
Captain Rani Rampal's clinical strike helped India beat South Africa 1-0 to seal their place in the semi-finals of the women's hockey event at the 2018 Commonwealth Games in Gold Coast, on Tuesday.
'Getting married and becoming a father in the last six months was definitely something that gave me a new energy, something that I never felt before. And right now everything has been going in such a positive direction in my life'
List of French Open women's singles champions
Indian-American elected officials, civil rights organisations and queers welcome the United States Supreme Court historic decision to legalize same-sex marriage nationwide for all Americans on Friday.
Not satisfied with winning the WTA Finals doubles crown with Zimbabwean Cara Black, Indian tennis ace Sania Mirza wants to clinch the women's doubles Grand Slam title before hanging up her tennis shoes.
List of French Open women's singles champions
Left teary-eyed after her Indianness was put into question just weeks back, tennis star Sania Mirza dedicated her US Open title to the country and the new state of Telangana, where her appointment as brand ambassador triggered a political furore.
Roger Federer continued his smooth progress at the French Open on Friday with a straightforward 6-4, 6-3, 6-2 defeat of Bosnian Damir Dzumhur to reach the fourth round.
Here's a look at the events that shaped the world last week.
Images from Day 6 of the Australian Open in Melbourne, on Saturday.
World No 1 Novak Djokovic and Serena Williams advanced safely to the next round of the US Open on Saturday but the women's draw saw yet another big upset as Wimbledon winner Petra Kvitova was sent packing by a 145th-ranked qualifier.
Images from matches played on Day 4 of the Australian Open at Melbourne Park on Thursday
Real Sociedad midfielder Carlos Vela was called up by Mexico for November tour friendlies on Tuesday after turning his back on his country since March 2011.
From Aurangzeb to Sangh Parivar, the year 2016 offers plenty of hope in historical and modern literature.
Novak Djokovic says he has lost all trust in the anti-doping programme in tennis and fears he could become a victim of its 'negligence' after fellow Serb Victor Troicki failed to have his doping ban overturned on Tuesday.
Images from all the action from Day 1 of the Wimbledon on Monday.
From the Syrian civil war to the Ukrainian crisis to the terror unleashed by the dreaded Islamic State, there was no lack of news in 2014. In this five-part series,rediff.com presents a selection of the year's most enduring moments year from around the world.
The 2015 edition of the Sony World Photography Awards, the world's biggest photography competition, has announced the shortlists.
Croatian ninth seed Marin Cilic reached the Wimbledon quarter-finals for the third year running after Kei Nishikori quit with a rib injury midway through their fourth round match on Monday.
On December 5, 22-year-old Asha Bhat, a former NCC cadet, surprised the world by becoming the first Indian to win the Miss Supranational 2014 title, defeating 70 contestants from around the world.