Doctor reacts to the ‘very concerning' Raul Rosas Jr vs Raoni Barcelos finish at UFC Vegas 121

Raoni Barcelos appeared to be on his way to a decision victory against Raul Rosas Jr . on Saturday night.

The 39-year-old was way up on the cards before he lost consciousness after being taken down in the final round.

Have you ever been more scared after a UFC fight? 😨 Raoni Barcelos went out cold without taking a punch in the fifth round of his fight with Raul Rosas Jr.