Australian athletes have been warned against using Twitter during competition after officials found competitors tweeting during last week's Olympic diving test event in London.

Mike Tancred, the Australian Olympic Committee (AOC) director of media and communications, fears athletes tweeting during competition will be distracted.

Former World Cup semi-finalists South Korea take on Kuwait on Wednesday in a crucial home clash, seeking to avoid becoming the highest-profile casualty of Asian qualifying for Brazil 2014.

The Koreans are level on 10 points at the top of Group B with Lebanon, who defeated South Korea 2-1 in November in a shock reversal that prompted the sacking of coach Cho Kwang-Rae.

Following a captivating championship and the addition of Danica Patrick, the last thing NASCAR wanted was a glitch.

And certainly not a full-on delay that pushed NASCAR into a lunchtime slot Monday for its biggest event of the year.

Premier Najib Miqati wished Lebanon’s national football team success in the Asian Football Confederation 2014 FIFA World Cup qualification match on Wednesday which will determine if it will join the fourth and final preliminary round.

Information Minister Walid al-Daouq quoted Miqati as telling ministers on Monday that he hoped “Lebanon would achieve the successes that we got used to seeing.”

World number one Novak Djokovic may be entering new territory when he competes at this week's Dubai Open, his first tournament since his Australian Open triumph last month.

Though Djokovic has won the Aussie title twice before, he has never previously received the level of celebrity which has been bestowed on him.

Manchester City opened up a five-point lead at the top of the Premier League with victory over Blackburn on Saturday as Chelsea beat Bolton to ease the pressure on manager Andre Villas-Boas.

With second-placed Manchester United not playing until Sunday's trip to Norwich, City took full advantage of the opportunity to crank up the pressure on their cross-town rivals by taking all three points at Eastlands.

Orlando waited 20 years to host All-Star weekend again, and Dwight Howard wants nothing to spoil the party.

So forget that trade request, Magic fans. Ignore the rapidly approaching deadline for deals.

Kyrie Irving kicked off the aerial display with an alley-oop to Paul George. Cleveland's rookie point guard then showed off his long-range shooting skills.

It was so much fun that Irving wasn't too upset that all those 3-pointers came in a meaningless game.

Nani has admitted he is struggling to regain his top form since returning from injury for Manchester United.

The Portugal international played in both legs against Ajax in the Europa League after being sidelined for a month.

Robin Van Persie has confirmed Arsenal's north London derby clash with Tottenham Hotspur will carry an extra edge by insisting it is a game Arsene Wenger's side simply cannot afford to lose.

Local rivalry ensures the visit of Spurs to the Emirates Stadium is always highly charged.