A new light heavyweight option may be forming in the UFC, and Dustin Poirier already has a name in mind for Paulo Costa. Speaking recently about Costa’s move to 205 pounds, Poirier said a matchup with Khalil Rountree makes sense as the kind of violent, high-stakes fight that could fit on a UFC 3XX card later this year.
Poirier’s suggestion lands at an interesting moment for both men. Costa is looking for a reset after an inconsistent stretch that stalled his standing at middleweight, while Rountree has become one of the division’s most dangerous finishers and a fan favorite for his aggressive style. In a weight class that is always looking for fresh contenders behind the title picture, this is the kind of pairing that could quickly produce a new player in the rankings.
"If I were the matchmaker, I’d make Paulo Costa vs. Khalil Rountree. That makes sense. It would be an exciting fight, a real clash," Poirier said.
For Costa, the stakes go beyond simply debuting in a new division. He needs to show that the power and pressure that once made him a top middleweight threat can carry over against naturally bigger opponents. For Rountree, a win over a recognizable name like Costa would strengthen his case as more than just an action fighter — it would push him deeper into the serious contender conversation at 205.
American fans would likely buy into this one immediately because it is easy to sell: two explosive strikers, very little chance of a slow start, and real consequences in a division that rewards momentum fast. That matters on modern UFC pay-per-view cards, where matchup quality often drives attention as much as title implications.
Costa previously revealed that he has one fight remaining on his UFC contract, which adds another layer of intrigue if the promotion decides to book him in a high-profile light heavyweight debut. Now the question is whether the UFC sees the same opportunity Poirier does — and whether Costa’s next move comes against one of the division’s most dangerous hitters.