Alex Pereira

It seems everyone's accepted Khabib Nurmagomedov is retired for good ... the MMA legend's manager says the UFC didn't even reach out about a possible return to the Octagon as Dana White's promotion put together one of their biggest events ever! UFC 300 is going down Saturday, April 13 in Las Vegas…

Jiri Prochazka admits Alex Pereira is a good freakin' fighter, but is he the most dangerous man he's ever faced? Prochazka doesn't think so. TMZ Sports talked to the 31-year-old, #1 light heavyweight contender ... and we asked Jiri if Alex presented the biggest challenge to him over his 10+ year…