European champions Barcelona will go up against English Premier League leaders Arsenal in the Champions League last 16 after they were thrown together in Monday's draw.

French heavyweights Paris Saint-Germain were drawn against 2012 winners Chelsea for the third straight season, while Bayern Munich will meet last year's finalists Juventus.

Kevin Durant scored 31 points to lead the Oklahoma City Thunder to a fifth straight NBA victory on Sunday, a 104-98 overtime triumph over the Utah Jazz.

Durant made 10 of his 17 attempts from the floor, handing out six assists and pulling down five rebounds.

European champions Barcelona were greeted like rock stars on their arrival in Japan on Monday to contest the Club World Cup, looking bleary-eyed after a long flight from Spain.

Around 300 screaming fans greeted the Spanish giants trying to take pictures of superstars Lionel Messi, Neymar and Luis Suarez as they swept through Narita airport at around 0800 local time dressed in blue team tracksuits.

Novak Djokovic and Serena Williams celebrated seasons of epic proportions, claiming six of eight Grand Slam titles in a march to greatness dented only by two players producing once-in-a-lifetime performances.

Djokovic ended 2015 with 11 titles, 82 wins and just six defeats in a haul which included three of the four majors -- the Australian and U.S. Opens and Wimbledon.

Chris Froome reasserted his authority, a new star was born in Fabio Aru while Peter Sagan finally came good in an action-packed 2015 in cycling.

To a certain degree, doping took a back-seat, not least because of the corruption scandal in football and athletics, particularly Russia, being dragged through the drug-tainted mud.

Arsenal manager Arsene Wenger lauded Olivier Giroud after the French striker helped his side negotiate a potential banana skin with a 2-0 victory away to floundering Aston Villa.

Giroud notched his 50th Premier League goal with an early penalty as Arsenal went top of the table at Villa Park, four days after his first hat-trick for the club had yielded a 3-0 victory at Olympiakos that sent Wenger's side into the Champions League last 16.

Real Madrid coach Rafael Benitez was at a loss to explain his side's terrible first-half performance after they slipped to a third defeat in five league games at Villarreal on Sunday.

Madrid now trail leaders Barcelona and Atletico Madrid by five points after failing to respond to Roberto Soldado's eighth minute winner against his old side.

Liverpool manager Jurgen Klopp says he must wait to discover the extent of Dejan Lovren’s injury after attempting to play down a touchline row with West Bromwich Albion counterpart Tony Pulis.

A bad-tempered 2-2 draw at Anfield was overshadowed by an injury to central defender Lovren, who was carried off on a stretcher after being caught by Albion midfielder Craig Gardner.

Mario Mandzukic and Paulo Dybala struck late as champions Juventus continued their Serie A fightback with a stunning 3-1 win over Fiorentina in Turin on Sunday.

Juventus, claiming their sixth consecutive league win following a disastrous start to the season, moved up to fourth place at the expense of Roma to sit six points behind leaders Inter Milan.

Zlatan Ibrahimovic took his tally to 14 goals in his last 11 Ligue 1 games as Paris Saint-Germain outclassed Lyon 5-1 on a gloomy Sunday night in the French capital.

Ibrahimovic and Serge Aurier both netted in the first 17 minutes for Laurent Blanc's side before a shocking error by goalkeeper Kevin Trapp allowed Jordan Ferri to pull one back for Lyon.