Roy Nelson challenges Mike Russow to a win or leave (the heavyweight division) bout

In a heavyweight division of the UFC filled with fighters who are built like a Greek god, Roy Nelson and Mike Russow don't exactly fit the mold. After watching Fabricio Werdum knock out Russow at UFC 147, Nelson was struck with matchmaking inspiration.

"I want Mike Russow and loser goes to 205 or becomes Dana White Rich. Let make it happen @danawhite," Nelson tweeted.

Both men appear to carry more body fat than most of their counterparts and look like they could cut down a weight class. They also both have recent losses to Werdum, as Nelson dropped a decision to him in February.

This isn't the first time Nelson has contemplated a drop down. In March, he said he would try to get to light heavyweight if he added 100,000 Facebook likes. However, he abandoned the plan when he was booked for the all-heavyweight main card at UFC 146.

A drop for Russow, who weighed in at 246 pounds for UFC 147, may be a bit more difficult than for Nelson. In addition to being a pro fighter, he is a full-time officer in the Chicago Police Department. He doesn't train full time, like Nelson does.

Of course, the difficulty in dropping down would also give Russow more motivation to win the fight. Do you want to see this fight? Speak your mind in the comments, on Facebook or on Twitter.