Report: Fabricio Werdum vs Cain Velasquez title rematch possible for UFC 196 PPV on Super Bowl weekend

Not all that's promised in the world of mixed martial arts (MMA) ends up coming true.

Fabricio Werdum, reigning Ultimate Fighting Championship (UFC) heavyweight titleholder, had intentions of mixing it up with previous foe and former 265-pound king Cain Velasquez in his native land of Brazil after capturing the belt in a lopsided showing at the UFC 188 pay-per-view (PPV) in front of the latter's crowd in Mexico City, Mexico last June.

However, as we've seen with large productions in Brazil in the past -- as well as other countries -- logistics are often times a competing factor.

Ariel Helwani of MMAFighting.com reported on "UFC Tonight" earlier this week that negotiations have stalled on a March stadium show in Curitiba, Brazil, leading ZUFFA officials to go to plan B.

UFC President Dana White and Co. have tapped the Werdum vs. Velasquez rematch to be the UFC 196 headliner, which takes place a month earlier (Sat., Feb. 6, 2016) on Super Bowl weekend in Las Vegas.

At this point, nothing is set in stone, but if the likelihood of an outdoor event continues to trend downward, we can surely expect the match up to take place in "Sin City."