Boxer KOs opponent with brutal seven-punch combo

American boxer David Benavidez has absolutely destroyed his opponent with one of the most devastating combos you'll ever see.

Benavidez took on Rogelio Medina on Sunday and won in the eighth round.

The 20-year-old finished things off with a brutal seven-punch combo that only ended because Medina crumpled into a heap.

Benavidez takes his record to 18-0 (17 knockouts) and is now the mandatory challenger for the winner of Callum Smith-Anthony Dirrell's vacant WBC title.

Benavidez's stunning KO was just one of a number of big knockouts over the weekend.

Daniel Dubois took just 40 seconds to demolish David Howe in only his third professional boxing appearance.

There were crazy scenes after Andre Dirrell's fight with Jose Uzcategui when Dirrell's uncle sucker punched Uzcategui.

In the MMA world Fabian Edwards knocked out his opponent with an incredible flying knee at Bellator London.

And fans were treated to a rare spectacle in Thailand when two Muay Thai fighters simultaneously knocked each other out.