WWE and UFC fans erupt as Alex Pereira and Roman Reigns exchange merchandise, fueling excitement among both fanbases.

The TKO Group merger of the UFC and WWE provides many crossover opportunities between both brands. That was evident at Friday's WWE SmackDown in Buffalo when UFC Light Heavyweight Champion Alex Pereria showed up to show.

An epic crossover took place as World Wrestling Entertainment (WWE) star Roman Reigns and UFC Lightweight champion Alex Pereira exchanged t-shirts with one another on November 9, Saturday. A video of the same emerged on social media as the duo shook hands by smiling enthusiastically before exchanging the outfits.

Pereira sat ringside for SmackDown with friends and family and spent time backstage, posing with WWE titles and meeting Paul "Triple H" Levesque.