A Dustin Poirier vs. Nate Diaz boxing match under the Zuffa Boxing banner never got off the ground, according to Poirier, who said UFC officials turned down the idea despite his interest in stepping into the ring after retirement. Poirier revealed the situation while discussing his future outside the Octagon, making it clear that the proposal was for a welterweight bout against Diaz.
That matchup would have had real appeal in the American fight market. Diaz has long been one of the UFC’s biggest crossover personalities, and Poirier’s action-heavy style made him an easy sell to fans who tend to support MMA names testing themselves in boxing. Even without a title attached, it is the kind of event that would have generated buzz well beyond hardcore circles.
Poirier said he has always wanted to box a couple of times before fully walking away from combat sports, but his UFC contract remains in effect even after retirement. He said he pitched the idea directly: Poirier vs. Diaz in Zuffa Boxing at welterweight. The answer, he explained, was no because the promotion does not want to move forward with crossover fights.
From the UFC’s side, that stance makes business sense. If the company opens the door for one retired or inactive MMA fighter to take a boxing match, others would likely push for the same opportunity. That could quickly complicate matchmaking, contracts, and the effort to position Zuffa Boxing as a serious standalone brand rather than a side platform for UFC talent.
There is also a clear stylistic hook here, which is why fans would have bought in. Diaz’s volume and durability have always translated well to boxing conversations, while Poirier remains one of the cleanest punchers of his era at lightweight. In his final UFC stretch, Poirier was still competing against elite names, which only strengthened the case that he could draw meaningful attention in a boxing setting.
For now, the fight appears to be off the table, but Poirier’s comments show there is at least interest on the fighter side—and if Zuffa Boxing ever loosens its stance on crossover matchups, this is exactly the kind of bout fans will revisit first.