#4 Fedor Emelianenko vs. Brock Lesnar
Out of all the fights mentioned in this list of ours, this one is perhaps the unlikeliest. The probability of Fedor Emelianenko signing with the UFC this year seems quite low. However, as the old adage goes: Never say never.
This is, after all, the fight game, and one can expect the unexpected in the dominion of combat sports. Emelianenko is currently set to face Ryan Bader to determine the Bellator Heavyweight Grand Prix winner and consequently the new Bellator Heavyweight Champion.
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However, although 'The Last Emperor' is widely regarded as one of the greatest fighters of all time, the man has a considerable amount of mileage on his body, owing to which most experts predict that he'd likely lose to the younger, fresher fighter -- Bader.
Nevertheless, should Emelianenko sign with the UFC, you'd better believe that Dana White and co. will finally give the fans the fantasy matchup of the Russian legend facing pro-wrestling megastar and former UFC Heavyweight Champion Brock Lesnar.
Although both fighters may not be in their athletic primes anymore, a clash between Emelianenko's Sambo and Lesnar's wrestling would surely produce a high-level chess match when they do battle under the UFC banner.
In their respective primes, Emelianenko would've been a huge favorite to win his bout, however, right now, you'd probably have to pick Lesnar to take his smaller foe down and ground-and-pound him into oblivion...