Amir Khan's attempt to become only the third lightweight in history to claim a middleweight crown ended in tears last night after he was knocked out in the sixth round by a brutal Canelo Alvarez punch.
Khan had enjoyed the better of the fight and was ahead on the scorecards before the knockout blow came. The moment, at the 20,000-capacity T-Mobile Arena in Las Vegas, was captured in slo-mo, and you can check out the video at the bottom of this article.
The British boxer, who has now suffered four defeats - three by knockout - in his 35-fight career, admitted afterwards that the fight against Canelo, which was fought at a catch-weight of 155lbs, may have been a step too far - especially given that the Mexican entered the ring north of 170lbs.
“I got in the ring with a big guy, but this is boxing,” he said. “I want to be the best, I want to fight the best, but my natural weight is 147.”
Having been checked out by medical personnel after hitting the canvas, Khan later tweeted: "I'm okay everyone 😃 thats boxing for you, congrats to @Canelo monster punch, much love to all the fans!"
Next up for Canelo after his victory is a potential big money showdown against unbeaten Kazakh champion Gennady Golovkin, who was at ringside in Las Vegas.
“I will fight him later this year,” Canelo said in front of a partisan Mexican crowd. “Viva Mexico!”
Khan meanwhile is likely to move back down to welterweight, where he is mandatory challenger to face Danny Garcia for his WBC belt.
Garcia handed the Bolton fighter one of his four defeats via a fourth round technical knockout back in 2012.