Former world champion Amir Khan has promised to upset the odds in the coming months.

Khan, who coming in is a huge underdog, will challenge WBO welterweight champion Terence Crawford on April 20th, at a venue to be determined.

The contest was announced a few days ago, when the two boxers came face to face in London. Their fight will take place at the MGM Grand in Las Vegas or Madison Square Garden in New York City.

Khan realizes that most experts are giving him little to no chance of victory.

Crawford is regarded by many experts as the best pound-for-pound fighter in the sport.

But according to Khan, a victory over Crawford will not be the biggest victory of his veteran career.

In his biggest fight to date, Khan moved up to a catch-weight of 155-pounds and was knocked out by then middleweight champion Canelo Alvarez in 2016.

He remained out of the ring until April of 2018, when he blew away Phil Lo Greco in one round. But his next bout, in the fall, he was dropped and later rocked in the tenth round of a decision victory over Samuel Vargas.

"I know a lot of people are saying I've got no chance against someone as good as Terence but I firmly believe I will be the first man to beat him and take his place in the pound-for-pound rankings," Khan said.

"I'm not going to America as the opponent. Terence will be one of the most skilled boxers I've fought but he's not that good that beating him would be the crowning moment of my career.

"Despite my two world titles and the size of this challenge the greatest achievement is still my Olympic silver medal. That changed my life and made me a household name around the world, overnight."