Amir Khan has admitted that his career will be virtually over if he fails to defeat Carlos Molina next month.
The Bolton light-welterweight, 25, has suffered two huge setbacks over the past 11 months. He controversially lost on points to Lamont Peterson in December and was then knocked out by Danny Garcia in July.
Khan knows that a third defeat would end his dream of a super-fight against the likes of Manny Pacquiao and Floyd Mayweather.
"There's always pressure when I fight but I definitely have to win this because if I lose, I'm done," said Khan.
"This is a fight I need to win, 100%. If I don't win it I'm done. It's that simple.
"The big super-fights I've always dreamed about won't be there if I lose this. Pacquiao, Mayweather - forget it."
Khan and the unbeaten Molina go head to head at the Los Angeles Sports Arena on December 15.
