Watch LIVE Floyd Mayweather Jr. vs. Miguel Cotto HBO PPV on Cinco de Mayo

The biggest boxing event of 2012 is here, Floyd Mayweather Jr. returns to the ring to put his undefeated record (42-0-0-26 KOs) on the line against the current WBA junior middleweight champion Miguel Cotto (37-2-0-30 KOs) on Cinco de Mayo at the MGM Grand in Las Vegas, Nevada.

Floyd Mayweather is known as the biggest Pay-Per-View draw in boxing and arguably the best pound-for-pound boxer in the world having risen through multiple weight divisions and winning titles in each, he comes back to the junior middleweight weight class (154lbs) a division where he won a title from Oscar De La Hoya in 2007 in an event that broke all PPV records selling 2.7 million Pay-Per-View buys and takes on the WBA champion Miguel Cotto for a chance to win his second title at 154-pounds.

Miguel Cotto has fought the best from Zab Judah, Shane Mosley, Antonio Margarito, Manny Pacquiao and now he will be taking on the great Floyd Mayweather Jr. in a super-fight that will earn Cotto his biggest payday of $8 million dollars. Cotto has a chance to make history by defeating the man who many consider the greatest boxer of our generation, if Cotto and his trainer Pedro Diaz can pull off the upset and somehow find a way to give Mayweather his first loss, they will solidify themselves in boxing history. A Cotto win will also upset the possible Manny Pacquiao vs. Floyd Mayweather Jr. super-fight.

The co-main event is another junior middleweight championship fight pitting 21-year-old undefeated Mexican superstar Saul “Canelo” Alvarez against American boxing legend “Sugar” Shane Mosley for Canelo’s WBC 154-pound belt. Mosley at 40-years-old is past his best years, but will he be able to turn back the clock one more time and beat the younger Canelo Alvarez? Mosley will be Canelo’s toughest and most decorated opponent yet.

Watch “Ring Kings” Floyd Mayweather vs. Miguel Cotto, Canelo vs. Mosley live Saturday, May 5 (Cinco de Mayo), 2012 at 6:00 PM PT on HBO PPV (contact your PPV provider to order).