Amir Khan has been defeated by Danny Garcia in Las Vegas.
Referee Kenny Bayless stopped the fight for the light-welterweight title in the fourth-round after a series of heavy blows by Garcia.
The 24-year-old American paid tribute to his family in his post-victory speech.
Amir Khan's fight against Danny Garcia has started in Las Vegas.
British boxer Amir Khan's bout against American Danny Garcia is expected to start at approximately 04:00 BST today.
The light-welterweight unification fight will take place in Las Vegas.
David Haye has defeated Dereck Chisora in their heavyweight fight tonight at Upton Park.
The 31-year-old Briton won by TKO in the fifth round.
The David Haye v Dereck Chisora fight is now underway.
Earlier, former Olympic champion Audley Harrison and former undisputed super-middleweight world champion Joe Clazaghe tweeted the following predictions:
Prediction time! haye-chisora...Haye has a point to prove, feels chisora is not in his class, so will start fast. Haye early, or if chisora
Going for HAYE KO and KHAN POINTS. tonight. AGREED??
Time for business, I'm ready! Enough of all their trash talking time to bring back 3 world titles. Sky Sports 1 2am & HBO Sports #KhanGarcia
This is my chance to prove once and for all that I'm the best in the division.
I can win the WBC title and will have held three of the four belts in the light-welterweight division, so it's time to move up to 147lbs.
I just think there are more challenges out there for me in that division.
– Amir Khan told Press Association Sport
I want to be in big world title fights and in big fights with the likes of Mayweather. To do that, I need to be up in that division.
Watching Mayweather's last fight (a points win against Miguel Cotto), coupled with the way I've been training, I think I'm ready.
One of the reasons I want to move up to 147lbs is to fight Mayweather and it's not about the money, it's about me knowing I can beat the guy and be the next guy at the top, the next pound for pound champion.
Floyd Mayweather is currently serving a prison sentence for domestic violence and Khan will be waiting when he is released in a few weeks' time.
Amir Khan believes he is ready to move onwards and upwards providing he beats Danny Garcia in the light-welterweight unification fight.
The 25-year-old Briton, who has been reinstated as WBA champion, takes on WBC holder Garcia in Las Vegas in a bout which will see the winner crowned Ring magazine champion.
Khan then plans to move up to welterweight and take on American superstar Mayweather. The Bolton fighter and his team are convinced he is ready for such a test, while Golden Boy Promotions boss Richard Schaefer insists it is "an easy fight to make".