With less than 24 hours to weigh-in, Mark Hunt is 19 pounds over the limit

It's Friday in Japan and it's probably safe to say it's not going to be the most enjoyable day for UFC heavyweight Mark Hunt.

Hunt, who said he began his training camp at an astounding 340 pounds, weighed 284 on Thursday in Japan, a UFC source confirmed to Yahoo Sports. That means that by the 4 p.m. Tokyo time weigh-in, Hunt will have to shed an additional 19 pounds to make the heavyweight limit of 265 for his bout at the Saitama Super Arena against Roy "Big Country" Nelson.

It's almost certain Hunt is going to spend most of his Friday in the sauna trying to shed 19 pounds.

It's hard to imagine he'll be able to lose all of that weight. If he misses, then it will be up to Nelson if the fight goes forward. Hunt weighed 262 pounds for his December bout against Antonio "Big Foot" Silva that went down as one of the greatest matches in UFC history.

In the event Hunt misses weight, Nelson will have the opportunity to decline to fight, which is highly unlikely. If Nelson declines, he wouldn't be paid, either.

But if Nelson chooses to fight anway, he would get 20 percent of Hunt's purse in addition to his own.

It would be a severe punishment for Hunt, but it's hard to imagine having to lose 75 pounds as Hunt had to do from the start of his training camp.

The entire card will be streamed on UFC Fight Pass.