Cleveland's Tyronn Lue era got off to a rocky start on Saturday as LeBron James and the Cavaliers were beaten 96-83 on their home floor by NBA Central Division rivals Chicago.

Any energy boost for James and the Cavs in their first game since head coach David Blatt was abruptly sacked on Friday -- to be replaced by associate coach Lue -- was quickly snuffed out by the Bulls, who scored the last 13 points of the opening quarter to take a 21-14 lead that they wouldn't relinquish.

Tennis coach Nigel Sears was cleared to leave hospital on Sunday and fly home after a dramatic mid-match collapse at the Australian Open which sent his son-in-law, Andy Murray, racing to his bedside.

The 58-year-old Briton, who coaches Ana Ivanovic, thanked the "incredible people" who rushed to his aid when he collapsed at Rod Laver Arena late on Saturday while watching the former women's number one play.

Being the world's top tennis star can be a lonely business -- just ask Serena Williams.

The in-demand 21-time Grand Slam winner and top seed at the Australian Open said she had been spending plenty of time on her own in Melbourne at the opening Grand Slam of the year.

Manuel Pellegrini insists Manchester City are more than a one-man team, despite again needing Sergio Aguero to dig them out of a hole in a 2-2 draw at West Ham.

Aguero grabbed an 80th-minute equaliser for his second of the game at Upton Park on Saturday while Enner Valencia also scored twice -- within the first 60 seconds and then on the 56th minute -- for West Ham.

Japanese star Kei Nishikori produced his best tennis of the tournament to breeze past former finalist Jo-Wilfried Tsonga and into the quarter-finals of the Australian Open on Sunday.

Seventh seed Nishikori won 6-4, 6-2, 6-4 in just over two hours on Hisense Arena and will face either world number one Novak Djokovic or French 14th seed Gilles Simon in the last eight.

Louis van Gaal admitted the furious reaction of Manchester United supporters to their side's dismal 1-0 defeat against Southampton was the worst he has experienced in an increasingly turbulent season.

Van Gaal's side failed to score at Old Trafford for the seventh time this term and were eventually beaten by a late headed goal from Southampton debutant Charlie Austin.

Outspoken Bernard Tomic has taunted Roger Federer over his struggles against Novak Djokovic after the Swiss great candidly told the young Aussie he had to knuckle down if he wanted to reach the top 10.

Tomic, who has made more noise off the court than on it in his career so far, said the 17-time Grand Slam winner was "nowhere near" the world number one -- and insisted his own game was top-eight material.

Claudio Ranieri will give his table-topping Leicester City squad a well-deserved rest as they prepare for a three-game acid test of their title credentials next month.

While Ranieri heads back to his native Italy to see his family, he urged his players to enjoy a three-day rest before focusing on big games against Liverpool, Manchester City and Arsenal.

Jurgen Klopp admitted his heart was palpitating after Liverpool stole the points in dramatic fashion in their sensational 5-4 win over Norwich at Carrow Road.

Klopp's side went ahead through Roberto Firmino but Norwich hit back with goals from Diemerci Mbokani, Steven Naismith and a Wes Hoolahan penalty.

Jose Mourinho has written a six-page letter to Manchester United outlining his credentials to succeed under-fire Louis van Gaal as manager, media reports suggested.

The Independent on Sunday claimed 52-year-old Mourinho, out of work since parting ways with Chelsea in December, outlines in detail his blueprint to resuscitate the Old Trafford giants who slumped to a 1-0 loss to Southampton on Saturday.