Vladimir Putin has given Russian citizenship to former world heavyweight boxing champion Roy Jones Jr.

A decree published on the Kremlin's website in the Russian president's name Saturday said the American, a four-weight champion once regarded by many as the world's best boxer, had been given Russian nationality.

FIFA president Sepp Blatter sold off television rights for the 2010 and 2014 World Cups to disgraced former FIFA vice-president Jack Warner at a knockdown price, Swiss media have claimed.

Swiss television channel SRF alleged that Blatter signed off the screening rights for South Africa and Brazil to Warner for 600,000 dollars (£389,000, 529,000 euros) - a mere 5% of their true market value.

"Super Saturday" is history at the U.S. Open but rain has created a "Fantastic Friday" at Arthur Ashe Stadium with Serena Williams, Novak Djokovic and Roger Federer in starring roles.

French champions Paris Saint-Germain and dynamic midfielder Blaise Matuidi will aim to extend their perfect start to the Ligue 1 season on Friday night at home to a depleted Bordeaux.

Laurent Blanc's men have collected maximum points through their first four matches with France international Matuidi playing an integral role in their early success.

Five-time champion Roger Federer will prepare for his U.S. Open semi-final clash with close friend Stan Wawrinka by sleeping as much as possible.

The 34-year-old Swiss believes napping, as well as the routine of practice and gym work, is just as crucial as he enters his 10th New York semi-final and 20th career clash against his compatriot.

AS Roma have donated jerseys worn by Francesco Totti, Edin Dzeko and Miralem Pjanic to the newly-launched "Football Cares" auction site to raise money for the refugee crisis, the Serie A club announced on Tuesday.

The three jerseys were worn during matches with 36-year-old Totti's worn when the Roma captain scored against CSKA Moscow in Russia last season, to beat his own record as the oldest scorer in a Champions League match.

The tiny Pacific nation of Guam held Oman 0-0 on Tuesday to extend their unbeaten home record in a World Cup qualifying campaign which continues to defy the odds.

The team from the remote U.S. territory bounced back from last week's 6-0 hammering by Iran in Tehran with a brave display at their National Training Center ground.

Five facts on Tuesday's U.S. Open quarter-final between Serena and Venus Williams:

Nico Rosberg has no intention of giving Mercedes team-mate Lewis Hamilton an easy ride to his third world title despite falling 53 points behind him in the race for this year’s championship after Sunday’s Italian Grand Prix.

The 30-year-old German, who retired with a blown engine with two laps remaining, had his worst day of the season as the defending two-time champion Briton drove to his 40th career win in commanding style.

Lewis Hamilton cruised to his seventh win of the season at the Italian Grand Prix on Sunday, and nearly doubled his Formula One lead over Mercedes teammate Nico Rosberg, whose engine caught fire with two laps remaining.

However, Hamilton's victory was under question after stewards summoned Mercedes concerning tire pressures on both of their cars.