Amir Khan's remarkable 20-year body transformation ahead of Kell Brook fight

Amir Khan may be one of the greatest boxers to ever grace UK boxing and has proven this by fighting in multiple weight divisions.

Even though he may not have had the desired success in each of the weight classes he’s competed in, you can’t say he didn’t give it a go.

Here, we’re going to take a look back at Khan’s boxing journey, and just how his body and physique has changed in his 20-year career.

Khan bust onto the UK boxing scenes when the then 17-year-old brought back a silver medal from the 2004 Athens Olympics.

Back then, he was a baby-faced youngster, with a small physique to boot, but that was all about to change as he stepped into the professional world.

Read more: Amir Khan vs Kell Brook: Date, UK Start Time, Ring Walks, Card, Live Stream, Odds, Tickets, Stats And Everything You Need To Know

After bringing back the silver, Khan turned professional and started fighting in the lightweight division.

However, he suffered a shock loss to unknown Colombian boxer Breidis Prescott, which was when questions started to arise about his chin, and whether he would be able to hold his own in the big leagues.

Ultimately, however, he had nine fights at lightweight and won eight of them. Not bad. Not bad at all.

The lad from Bolton then moved up to light welterweight, where straight away he had a chance to win the WBA title against Ukrainian Andreas Kotelnik.

Khan put on one of his best performances ever and clinched the belt and went on to dominate the light welterweight division.

He did, however, lose to Lamont Peterson and Danny Garcia, but the former later failed a drug test.

Khan did not want to stop there, however, and wanted to fight the big dogs in Floyd Mayweather and Manny Pacquiao. Chasing those big-name fights, the