LAS VEGAS, Nevada – In boxing, a weight class is a standardized weight range for boxers. The lower limit of a weight class is equal to the upper weight limit of the class below it. A boxing match is usually scheduled for a fixed weight class, and each boxer’s weight must not exceed the upper limit.

For the welterweight class, under which the Pacquiao-Mayweather fight is scheduled for May 2nd at the MGM Grand in Las Vegas, the upper weight limit is 147 lbs. or 66.7 kilograms (the lower limit is 140 lbs which is the upper limit for the super lightweight class).

Manny Pacquiao has been training so hard and eating so healthy that his weight going into tomorrow’s fight night was down to 143 pounds. While that does not disqualify Pacquiao under the welterweight rules, there are rumors that his opponent, Floyd Mayweather may exceed the upper limit of 147 pounds.

Mayweather has been very confident he would easily defeat the Filipino boxer that he has been training very lightly while binge-eating and drinking in exclusive restaurants in Las Vegas.Sources close to the American boxer have been heard as saying that as of last private weigh-in, he had registered 159 pounds.

While Manny’s coach Freddie Roach is worried that his protégé would be at a great disadvantage if he weighed close to the lower limit under the welterweight class, Floyd’s uncle and trainer Roger Mayweather is losing sleep over the possibility that his nephew will be disqualified for being overweight.

It all boils down to the official weigh-in which is just hours away! The magic numbers to watch for are 140 to 147.

UPDATE!!!  The official weigh-in has just concluded! Mayweather weighed in a 146 lbs. and Pacquiao at 145 lbs.  Tuloy ang laban!  (The fight is on!)