Video: Mayweather v Pacquiao,Watch the official trailer for the $300million Las Vegas super-fight

The countdown to Floyd Mayweather's showdown with Manny Pacquiao is well underway and the official advert for the Las Vegas $300million super-fight has now been released.

Mayweather will lock horns with Pacquiao on May 2, and a 30-second clip to promote the mouthwatering clash has been put together.

The footage shows the two fighters squaring up, with the 'Welcome to Fabulous Las Vegas' sign and the MGM Grand clearly visible in the background.

Sky Sports Box Office have won the race to show the fight - and it will be the most-expensive in UK box-office history.

It will be shown on pay-per-view, with Sky customers being charged £19.95 to watch the clash.

Pay-per-view customers in America will have to cough up £67.48 for access.

Meanwhile, Mayweather will use a custom mouthguard worth $25,000 in the fight.