Andy Murray wins a gruelling late-night contest with Grigor Dimitrov to reach the Australian Open quarter-finals.
BBC Sport Mobile
video, radio, updates of Sunday's ties, after the drama of Saturday
Bradford City boss Phil Parkinson refused Jose Mourinho's handshake before full-time in the FA Cup win over Chelsea.
The 'deflate-gate' saga has been eating up column inches and causing outrage all week, with chat-show hosts, cartoonists and even Kevin Costner having their say.
Watch live BBC One coverage of Bristol City versus West Ham in the FA Cup fourth round.
Listen to live radio commentary from the European Rugby Champions Cup as Bath host Glasgow at the Rec.
Chelsea's defeat by Bradford was the biggest in FA Cup history, says Robbie Fowler - plus more reaction to a day of cup shocks.
Jose Mourinho is "ashamed" by the loss to Bradford City, while Manchester City also lose on a day of shocks in the FA Cup.
Maria Sharapova will face Eugenie Bouchard, and Rafael Nadal makes the Australian Open quarter-finals - plus round-up.
Wales and British and Irish Lions prop Adam Jones tells the Sunday Times newspaper he has retired from international rugby.
Michael Carberry helps Perth Scorchers beat Kevin Pietersen's Melbourne Stars to reach the Australian Big Bash final.
New England Patriots coach Bill Belichick says his side followed "every rule to the letter" in the row over under-inflated balls.
Mario Balotelli has not been good enough in training to play for Liverpool at the moment, according to Brendan Rodgers.
Home favourite Nick Kyrgios beats Andreas Seppi in five sets to reach the Australian Open quarter-finals.
Everton striker Samuel Eto'o's transfer to Sampdoria moves a step closer after he completes a medical with the Italian club.
New Zealand win the one-day series against Sri Lanka with a match still to play after going 4-1 up with a 120-run victory.
Manchester City boss Manuel Pellegrini denies a week-long training camp in Abu Dhabi is the reason for their FA Cup loss.
Hurricane Fly will bid for a record fifth Irish Champion Hurdle as he faces old rival Jezki at Leopardstown on Sunday (14:45 GMT).
Juan Imhoff scores twice as Racing Metro humiliate Northampton, but Saints still reach the Champions Cup quarter-finals.
Gareth Bale's late penalty ensures leaders Real Madrid overcome Cristiano Ronaldo's dismissal to beat Cordoba.
Tom Wood and Geoff Parling both suffer injuries before England's Six Nations opener against Wales on 6 February.
Britain's Elise Christie wins gold in the 500m and 1500m at the Short Track Speed Skating European Championships in the Netherlands.
Reigning European champions Toulon overpower battling Scarlets in Pool 3 to continue their title defence.
Neymar and Lionel Messi both score twice as Barcelona beat Elche to keep pace with La Liga leaders Real Madrid.
News By Sport
World indoor champion Richard Kilty is disqualified on his indoor comeback at the Glasgow International Match.
Amir Khan holds talks with Manny Pacquiao over a potential fight, but Floyd Mayweather remains Pacquiao's priority.
Mohammad Amir could return to first-class cricket next month if the ICC relaxes the Pakistani's five-year spot-fixing ban.
England's Alex Dowsett postpones his attempt to break the hour record after a slow start to his recovery from a broken collarbone.
Invictus Games competitor Corie Mapp wins gold for Great Britain in the first ever Para bobsleigh World Cup race.
Preview followed by live coverage of Sunday's FA Cup game between Bristol City and West Ham United.
Fernando Alonso will be the first man to test the new McLaren car as the team begin their engine partnership with Honda.
South African Branden Grace wins the Qatar Masters in Doha by one shot from Scotsman Marc Warren.
Hennessy winner Many Clouds follows up with victory in the Betbright Cup at Cheltenham on Festival Trials Day.
Judd Trump says an Olympic gold medal win would be a better achievement than triumphing at the World Championship.
Wigan Warriors winger Joe Burgess will join NRL side Sydney Roosters at the end of the 2015 Super League season.
Keith Earls will make his first Munster start since returning from injury in Sunday's European Champions Cup game against Sale.
The world governing body of snooker has submitted a bid to have the sport included at the 2020 Olympics in Tokyo.
Drug cheats in sport face a minimum four-year ban - up from two years - under new rules which came into effect from 1 January.
Wimbledon champion Petra Kvitova is out of the Australian Open after a 6-4 7-5 defeat by 19-year-old Madison Keys.
Great Britain's Laura Deas claims her second medal of the skeleton World Cup season with bronze in St Moritz.
FA Cup shocks
Video & Audio
Features & Analysis
Cristiano Ronaldo loses his cool to be sent off for the ninth time in his career as Real Madrid edge out Cordoba.
Robbie Savage on Aston Villa's problems as Paul Lambert's side prepare to host Bournemouth in the fourth round of the FA Cup.
Tom English hears of the childhood terror of Glasgow winger Tommy Seymour, and of his love for his club.
BBC Sport's football expert Mark Lawrenson takes on Cambridge United legend Dion Dublin for his fourth-round predictions.
Track all the latest signings day by day throughout January in England, Scotland and across Europe.
Your guide to sport on the BBC, including the Australian Open tennis and the FA Cup fourth round.