Sorry, but that is a very poorly written article. It presents the numbers in a way that's confusing. Here is all you need to know;
Keep in mind they are only a year apart in age.
Mayweather- Started his career fighting at 131lb and now fights around 146 (1996-present). If you click on the link below and look at his fights and weight gain, it looks like a very natural progression of a fighter moving up. Every several years he moves up about 5 pounds.
Manny - In 1996 he was fighting at 112, which is 15 pounds less than Mayweather that year. He spent most of his career fighting under 125 and only a few years fighting up to, but not over 130lb. Then in 2008, he went from 130 up to 147 in two years.
P.S. The author of your article obviously has a vested interest as he has been invited to Pacs camp and was granted an interview that talked about his weight. Give me a break.
Oh yeah, it's also clear the writer selected time periods and fights of Mayweather that make it look like he and many are progressing the same. However that is false. Look at the weight of each fighter from the beginning of their careers.
[ Edited by Oakland-Niner on Sep 24, 2011 at 9:08 PM ]