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A 21-4 Dutch middleweight ranked #8 who beat Robert Whittaker, Bo Nickal, and Kevin Holland before hitting a two-fight skid — here's the profile on paper.
Reinier de Ridder — known as “RDR” — is a middleweight out of the Netherlands carrying a career mark of 21-4-0. He currently sits at #8 in the middleweight rankings, which puts him squarely inside the division’s contender picture. At 35 years old, he brings a resume built over a long, well-traveled career rather than the raw curve of a newcomer.
The record tells a clear story: 21 wins against just four losses is the kind of ledger that gets a fighter into the top ten, and RDR has done exactly that. A #8 ranking is not a name on the fringe — it is a placement earned against opponents who matter.
Start with the frame. De Ridder stands 6’ 4" with a 78" reach, and that is tall and long even for a middleweight. Fighters built like this tend to control range: they own the space in front of them, keep opponents at the end of their strikes, and force shorter men to fight their way inside before anything happens. That reach is a fence, and RDR has a big one.
Add the Southpaw stance and the picture sharpens. A left-handed fighter changes the geometry for most opponents, who spend their careers facing orthodox foes. The lead-hand battle, the angles, the open-stance exchanges — all of it tilts toward the southpaw who knows how to use it. Combine that with a 78-inch span and you get a fighter who is awkward to time and awkward to close distance on.
At 35, RDR is fighting in the veteran phase of a career, the stretch where experience and ring craft carry weight. Nothing here is invented — height, reach, stance, and age are simply the tools he brings into the cage, and they read as a long, rangy, left-handed problem.
This is where the story gets interesting. Look at the run in order:
That is a three-fight surge into the top of the division followed by a two-fight cooldown. The wins are the headline: beating Robert Whittaker, Bo Nickal, and Kevin Holland back-to-back-to-back is a genuine statement, the kind of stretch that vaults a fighter up the rankings and onto everyone’s radar. Whittaker alone is a marquee name to have on your ledger.
But the two most recent results went the other way, including a loss to Brendan Allen. So RDR arrives at a crossroads: still ranked #8, still holding those big wins, but needing to snap a short skid and prove the surge was the truth of him rather than the losses. That tension is exactly what makes a fighter worth tracking right now.
His next matchup isn’t set yet, so keep an eye out for the announcement. When it lands, build your grid, call the winner, and see who reads De Ridder right. A long southpaw at a crossroads is the perfect fighter to test your read on — follow RDR and pick his next one.