While the MMA world is busy counting down the days until Holloway and Oliveira settle their business for the BMF title, the real technical masterpiece of UFC 326 is hiding in plain sight as the co-main event. On March 7, 2026, at the T-Mobile Arena in Las Vegas, we are getting a middleweight clash that feels like it was designed in a lab for die-hard fight fans: #8-ranked Caio Borralho (17-2, 1 NC) taking on the former multi-divisional king of ONE Championship, Reinier de Ridder (21-3).
This fight is fascinating because both men are essentially “back at the drawing board.” Both entered 2025 on massive tears before suffering rare setbacks that snapped their momentum. Now, they meet in a stylistic crossroads fight where the winner keeps their title dreams alive, and the loser potentially slides into the dreaded “gatekeeper” territory.
The Fighter Breakdown: Brains vs. Length
Caio Borralho is the leader of the “Fighting Nerds” out of São Paulo, and he truly lives up to the name. He doesn’t just fight; he solves problems. Caio is a master of the game plan, often taking the first few minutes of a fight just to “read” his opponent before he starts downloading the data and picking them apart. His game is built on incredibly sharp southpaw boxing and a wrestling defense that is basically a brick wall (he currently stuffs 76% of all takedowns).
Across the cage, we have Reinier de Ridder, known as “RDR.” The Dutch Knight is a giant for the 185-pound division, standing 6’4” with a reach that lets him touch people before they can even get in range. He made a massive splash in the UFC by finishing Bo Nickal and grinding out a win over Robert Whittaker, but his last fight against Brendan Allen raised some eyebrows. He looked human for the first time in years, gassing out late and eventually being stopped by the corner.
The Stylistic Battle: Can RDR Solve the “Fighting Nerds” Equation?
This is a rare southpaw vs. southpaw middleweight bout. In these matchups, the typical “open stance” games go out the window, and it usually turns into a battle of jabs and footwork.
1. The Wrestling Threshold
De Ridder’s path to victory is no secret—he wants you on the ground, and he wants your back. He is a master of chain wrestling, meaning if the first shot doesn’t work, he’s already moving into the second and third. However, Borralho isn’t some striker who’s afraid of the mat. He’s a high-level black belt in BJJ and has a deep background in Judo. If De Ridder can’t bully Caio against the fence and drag him down early, he might find himself in a kickboxing match he isn’t equipped to win.
2. Pace and Cardio
This is where the fight might be decided. Borralho has proven time and again that he can maintain a steady, high-output pace for 25 minutes. De Ridder, while dangerous early, showed signs of “fading” in his recent loss to Allen. In the thin air of a high-pressure Vegas co-main event, if Caio makes RDR work for every inch in the first round, the Dutchman might be running on fumes by the third.
3. The Striking Gap
On the feet, the edge goes to the Brazilian. Borralho lands significantly more strikes (3.44 SLpM) and has a much higher defensive percentage (60%) than De Ridder. RDR’s striking is often used as a “smoke screen” to get to the clinch. If Caio keeps this at distance, he can pick RDR apart with straight lefts and body kicks all night long.
Betting Guide: Where is the Value?
As of mid-February, Caio Borralho is a solid favorite at -235, with Reinier de Ridder sitting as the underdog at +180.
If you’re looking for a straight play, Borralho is the safer bet. He has more paths to victory—he can win a striking battle, he can defend the grappling, and he has the cardio to win the late scrambles.
However, if you’re hunting for a payout, keep an eye on the “Fight Goes the Distance” prop. Both men are incredibly tactical and historically durable. They respect each other’s grappling too much to take wild risks, which often leads to a high-level 15-minute (or 25-minute) chess match that goes to the scorecards.
Final Verdict: Who Wins?
I expect this fight to be a tense, technical battle. De Ridder will likely have moments of success early with his clinch work and perhaps a brief takedown, but Borralho’s “nerd” approach will eventually take over. He’ll figure out the distance, stuff the later takedown attempts, and out-volume RDR on the feet.
Official Prediction: Caio Borralho wins by Unanimous Decision.
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