A surprising answer from Diaz
Nate Diaz has faced many of combat sports’ biggest names, but when asked to name the toughest opponent of his career, he did not choose Conor McGregor, Jorge Masvidal or Jake Paul.
Instead, he went back to 2008.
According to GiveMeSport’s report on Diaz’s comments, the former UFC star named Josh Neer as the fighter who gave him his hardest night inside the Octagon.
“There’s a guy that I fought [in 2008] named Josh Neer,” Diaz said during an appearance on Bradley Martyn’s podcast. “That’s right when I started to fight top people. And it was my hardest fight.”
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For newer fans, the answer may seem unexpected. Diaz is best known for his two-fight rivalry with McGregor, his BMF title fight with Masvidal and his later move into boxing. But for Diaz, the Neer fight still stands apart because of its pace, resistance and timing in his career.
A fight that stayed with him
Diaz met Neer in the main event of UFC Fight Night 15 on September 17, 2008, in Omaha, Nebraska. He won by split decision after three rounds, but the victory was far from comfortable.
As listed by Tapology’s fight record for Nate Diaz vs. Josh Neer, the bout was fought at lightweight and earned Fight of the Night honours.
Diaz said he had already understood Neer’s toughness after watching him fight his older brother, Nick Diaz, at UFC 62 in 2006.
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“Josh Neer fought my brother and they was fighting for three rounds, hard, and Nick’s doing his thing, hitting him a lot, and I was like ‘This f****** guy is crazy,’” Diaz said.
Nick Diaz eventually stopped Neer in the third round, but the performance made an impression on Nate. When Neer later moved down to 155 pounds, Diaz wanted the challenge.
“Time went by, and then he went down to 155 where I was fighting at. And I asked for a better opponent,” Diaz said. “I was beating people — that’s when I first got to the UFC, I beat a few people.”
A hundred miles an hour
Diaz’s explanation was not only about Neer’s durability. It was about how difficult he was to read and control.
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According to talkSPORT’s article on Diaz naming Neer as his toughest opponent, Diaz said he had studied Neer carefully and prepared well for the matchup, only to find that Neer kept answering everything he did.
“I watched him fight so much, and then trained so perfect for him that everything was like — he’d throw punches, I slipped it right under it, grabbed him and everything,” Diaz said. “But he countered everything and it was like if you watch that fight, me versus Josh Neer, it’s a hundred miles an hour. It’s a good fight.”
He added that the respect between them has remained.
“He’s a motherf*****. He’s my boy now, though, we’re homies,” Diaz said.
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That line captures why the fight still matters to Diaz. It was brutal, competitive and exhausting, but it also became part of the mutual respect that often follows the hardest nights in MMA.
A name from before the global fame
Diaz’s choice is striking because of the opponents he did not name.
He submitted McGregor in 2016 in one of the UFC’s most famous upsets, then lost their rematch by majority decision five months later. He fought Masvidal in the UFC’s first BMF title bout in 2019, a fight stopped by the doctor because of a cut above Diaz’s eye. He later crossed into boxing, losing to Jake Paul by unanimous decision in 2023.
As reported by ESPN’s account of Diaz’s boxing win over Masvidal, Diaz then beat Masvidal by majority decision in their 2024 boxing rematch in Anaheim.
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Those fights brought more attention, more money and bigger headlines. But Diaz’s answer suggests that difficulty is not always measured by fame.
Neer did not become a crossover star. He did not headline pay-per-view events with Diaz. But on one night in Omaha, he forced Diaz into the kind of fight that stayed in his memory for almost two decades.
Why Neer remains the benchmark
The Neer fight came at a key stage in Diaz’s UFC rise. He had won The Ultimate Fighter 5, built early momentum and was beginning to move from prospect to serious lightweight contender.
Neer was rugged, experienced and awkward. He did not give Diaz a clean rhythm, and he refused to fade under pressure. For a young fighter still proving himself against higher-level opposition, that made him a dangerous test.
That is why Diaz’s answer feels so fitting. His career has always been built on wars, but not every war is remembered because it happened under the brightest lights.
For Diaz, the hardest one came before the McGregor rivalry, before boxing and before the BMF stage. It came against Josh Neer, in a fight he won, but never forgot.
