Strict rules govern transfers, with clubs able to negotiate terms with players only if they are out of contract or once a fee has been agreed with the seller. The laws also govern indirect approaches via an intermediary.
Russian Evgeniia Kolodko has been stripped of her shot put silver medal from the London 2012 Olympics after testing positive for banned substances in a re-test, the International Olympic Committee said on Saturday.
Garbine Muguruza made an imposing start to the WTA Finals by confidently swotting aside Czech Lucie Safarova 6-3, 7-6 (4) in their White Group opener on Monday.
With 'nothing to lose', Kuznetsov senses upset over vulnerable Murray
Svetlana Kuznetsova has the versatility and mentality to mark her out as the 'best player' on the WTA Tour.
"It's kind of hard to say because she -- there's nothing I did wrong on those match points," Williams told reporters after her bid for a record-equalling 24th Grand Slam title ended.
Rafael Nadal kept the flag flying for the old guard at the Australian Open with a 6-3, 6-4, 6-2 victory over American Frances Tiafoe on Tuesday for a place in the semi-finals, where he will meet another next generation player in Stefanos Tsitsipas.
'When I signed, I only knew that East Bengal are a big club with great history. I have no idea about ISL or any other tournament. I came here because East Bengal are a big club'.
The French Open crowds must be educated in order to avoid a repeat of the boos directed at Swiss Stanislas Wawrinka.
News of all that's transpired on and off the football field
A year after Andy Murray's reign as Wimbledon champion ended lamely at the hands of a man dubbed the new Roger Federer, he got a stark reminder on Friday that the original is the real threat to his grand slam ambitions.
Pakistan dominated the first day of the opening Test after bowling out England for 184 and battling to 50 for one in overcast conditions at Lord's in London on Thursday.
On a day when top seed Sloane Stephens survived a scare before beating Ajla Tomljanovic 4-6, 6-4, 6-4, Sakkari showcased supreme court coverage skills throughout her almost two-hour match against Bertens.
Some highlights from this action-packed weekend we give to in this beautiful package...
Tottenham Hotspur beat local rivals Arsenal with second-half goals from prolific pair Dele Alli and Harry Kane on Sunday to maintain their Premier league title challenge.
Roger Federer was given a fright before reaching the semi-final of the inaugural Istanbul Open.
World number one Serena Williams survived a mid-match meltdown to beat Czech Lucie Safarova 6-3, 6-7(2), 6-2 to win the French Open on Saturday, her 20th Grand Slam singles trophy.
Once viewed as the perennial whipping boys of one-day cricket, New Zealand have not only reinvented themselves but have also helped inspire a remarkable transformation in England's approach.
The Slovakian eventually won 6-4, 6-1 but the match will be remembered for a ludicrous umpiring decision at a crucial stage of a tight opening set.
Defeat is never an option for Serena Williams, but the World No 1 came close to an embarrassing second-round exit at the French Open after an 'unprofessional' display on Thursday.
SSerena Williams swept past Anastasija Sevastova 6-3, 6-0 on Thursday and into the final of the US Open to sit one win away from a record-equalling 24th Grand Slam title.
Serena William powered her way to within two victories of a seventh US Open title on Tuesday and while she refused to look ahead there are many willing to do it for her, and what they see is a suddenly open path to a 24th Grand Slam.
368 of James Anderson's 575 Test wickets have come on home soil, where the Dukes ball has been the default during his long career.
'He's done a lot for the African American community, and it's cost him a lot. It's sad' 'To be compared to Ali or Jordan, I really have no words'
Italy were clinical in their approach as they beat Belgium 2-0 in their Euro 2016 Group E encounter on Monday.
The world number one was virtually guaranteed a semi-final berth before walking on court at the O2 Arena, but made doubly sure by cruising past Tomas Berdych in little more than an hour.
Franck Ribery, who has been shortlisted for the prestigious FIFA-Ballon d'Or award, was named French Player of the Year on Tuesday by France Football magazine.
Pakistan's tennis ace Aisam-ul-Haq Qureshi is to start his 2014 season along with his former partner Rohan Bopanna by appearing in the Aircel Chennai Open to be started from December 30, according to reports.
Japan's Kei Nishikori dispatched error-strewn Swiss Stan Wawrinka 6-2, 6-3 in a disappointingly one-sided clash at the ATP World Tour Finals on Monday.
Arsenal goalkeeper Petr Cech will be out for three to four weeks with the calf injury he picked up in Wednesday's Premier League defeat by Swansea City, manager Arsene Wenger has said.
Rafael Nadal moved into the Miami Open semi-finals with a straight sets win over American Jack Sock on Wednesday.
Chelsea midfielder Nemanja Matic hopes a late season flourish can make amends for the champions' dreadful start to the current campaign and put them in contention to break into the Premier League's top four for Champions League spots.
Britain's Andy Murray has his best chance of winning the French Open this year, according to American great John McEnroe.
Defending champion Andy Murray eased into the Wimbledon quarter-finals for the 10th successive year with a 7-6(1), 6-4, 6-4 victory over Benoit Paire on Monday.
The 2-2 draw in Kaliningrad was thrilling for neutrals but exposed huge vulnerabilities in the 2010 world champions, who had to come from behind twice after careless mistakes gifted two goals to already-eliminated Morocco.
When this year's French Open draw was made just over a week ago, American Shelby Rogers was right near the back of the queue, just avoiding the qualifiers by scraping in on the direct entry list.
A Spanish left-hander moved into the quarter-finals of the French Open on Sunday. No surprise there, although his name was not Rafael Nadal but Albert Ramos-Vinolas.
Czech Republic's Tomas Necid scored a stoppage-time penalty as they came from two goals down to draw 2-2 with Croatia in a dramatic Euro 2016 Group D encounter on Friday that was interrupted due to flares thrown on the pitch. With Croatia captain Dario Srna in tears during the national anthem having returned from the funeral of his father earlier in the week, the Croatians swarmed all over the Czechs from the first whistle, with Perisic opening the scoring in the 37th minute to lead at halftime.
Spain's Fernando Verdasco and David Marrero, the sixth seeds, upset the favourites 7-5, 6-7(3), 10-7 as the title went to a Spanish pair for the second successive year following the triumph of Marcel Granollers and Mark Lopez 12 months ago.
It is the first time the final match of the season will decide who is ranked number one.