Watch Floyd Mayweather Jr. VS Shane Mosley LIVE online!

Mayweather versus Mosley will take place on May 1, 2010 at the MGM Grand in Las Vegas. Mosley's attorney Judd Burstein confirmed to ESPN.com that Mosley has already signed the contract. Both fighters agreed to undergo random blood and urine testing. Mayweather is yet to sign the contract.

The Mosley-Mayweather fight came into fore after talks for a Pacquiao-Mayweather fight collapsed due to Floyd’s drug test demands.

Mosley was supposed to face Haiti’s Andre Berto in a title-unification match, but Berto was forced to pull out after some of his family members were killed in the earthquake in Haiti.