Alex Pereira says Magomed Ankalaev's day of reckoning is coming ... where the UFC champ will be forced to pay for running his mouth!
"There's definitely a rivalry. [Ankalaev's] said a lot and now he's got to face it," Poatan told us this week, adding ... "And yeah, he definitely looks like he's a little bit scared."
Pereira and Ankalaev's UFC 320 rematch, which is exactly one week away, already had fans pumped ... but things were ratcheted up even more this week when the fighters got into a verbal dust-up at the UFC's Performance Institute.