James Toney certainly isn't the first fighter to put on a lot of weight during his career ... but he has taken gaining weight and raised it to an art form. In fact, Toney's expanding midsection makes George Foreman's legendary battles with the scale seem positively lightweight by comparison. Toney entered the ring for his 2011 heavyweight bout with Damon Reed a full 100 pounds - or 64%! - above his lowest weight as a pro.
We searched far and (especially) wide and came up with lots of fighters whose weights fluctuated greatly during their ring careers. However, Toney - through a combination of steroids (at least in his bout with John Ruiz) and lots and lots of food - appears to be greatest weight gainer in the long history of professional prizefighting. Take a look at the chart below for details on the expanding waistlines of some other notable fighters ...
|Eric "Butterbean" Esch||280||417.5||137.5||49%|
|Roy Jones Jr.||153||198.25||45.25||30%|
|Oscar De La Hoya||128.75||160||31.25||24%|
|Sugar Ray Robinson||134.5||165.5||31||23%|
|Sugar Ray Leonard||141||165||24||17%|