Tai Tuivasa vs. Robelis Despaigne: the 9-inch reach edge that frames the heavyweight prelim

The setup

UFC 331: Van vs. Pantoja 2 lands on Saturday, September 19, 2026 at crypto.com Arena in Los Angeles, and on the prelims sits Tai Tuivasa (15-10-0) against Robelis Despaigne (6-2-0) at heavyweight, scheduled for three rounds.

Our schedule tables list 12 bouts on the card; this one is filed under the prelims. The bout is listed as announced in the PropBetEdge schedule.

The question this preview works through is whether Robelis Despaigne's 9 inches of reach translates into control of range against Tai Tuivasa, or whether the archive says Tuivasa closes distance regardless. PropSports career averages are on file for both fighters, which sets the limit on how far that read can go.

Tale of the tape

• Record: Tai Tuivasa 15-10-0 · Robelis Despaigne 6-2-0
• Age: Tai Tuivasa 33 · Robelis Despaigne 38
• Height: Tai Tuivasa 6'2" · Robelis Despaigne 6'7"
• Reach: Tai Tuivasa 75" · Robelis Despaigne 84"
• Stance: Tai Tuivasa Southpaw · Robelis Despaigne Orthodox
• Listed weight: Tai Tuivasa 265 lbs · Robelis Despaigne 264 lbs

The 9-inch reach gap in Robelis Despaigne's favour (84" to 75") is the tape's headline number; it defines the range each man is working from. A reach edge matters most when the longer fighter also sets the pace, and here the numbers cut the other way: Tai Tuivasa out-lands Despaigne 3.37 to 2.11 per minute, so the shorter fighter is the busier one and has to cross the gap to do it. That is a different fight from a long fighter picking apart a passive one. Tai Tuivasa is the younger by 5 years (33 to 38). Age on its own tells you little at this level; it reads better alongside the layoff figures in the form section. It is an southpaw-versus-orthodox pairing: lead legs line up on the outside, which rewards the rear straight and the rear kick and makes the calf-kick battle a live one.

Recent form

Our archive has 18 completed UFC bouts for Tai Tuivasa, 8 wins and 10 losses. 7 of those wins came inside the distance (7 by KO/TKO), a 88% finish rate on archived wins. He has been finished 6 times in the archive. He last fought on May 2, 2026 and lost to Louie Sutherland by unanimous decision in round 3. That puts him 140 days out by fight night.

• L vs Louie Sutherland — unanimous decision, R3 (May 2, 2026, UFC Fight Night: Della Maddalena vs. Prates)
• L vs Tallison Teixeira — unanimous decision, R3 (Jan 31, 2026, UFC 325: Volkanovski vs. Lopes 2)
• L vs Jairzinho Rozenstruik — split decision, R3 (Aug 17, 2024, UFC 305: Du Plessis vs. Adesanya)
• L vs Marcin Tybura — submission, R1 (Mar 16, 2024, UFC Fight Night: Tuivasa vs. Tybura)
• L vs Alexander Volkov — submission, R2 (Sep 9, 2023, UFC 293: Adesanya vs. Strickland)

Our archive has 3 completed UFC bouts for Robelis Despaigne, 1 win and 2 losses. That win came inside the distance. The losses went to the scorecards. Most recently he lost to Austen Lane by unanimous decision in round 3 on Oct 19, 2024. That is 700 days before fight night on our dates, a layoff long enough to count as a variable in its own right.

• L vs Austen Lane — unanimous decision, R3 (Oct 19, 2024, UFC Fight Night: Hernandez vs. Pereira)
• L vs Waldo Cortes Acosta — unanimous decision, R3 (May 11, 2024, UFC Fight Night: Lewis vs. Nascimento)
• W vs Josh Parisian — KO/TKO, R1 (Mar 9, 2024, UFC 299: O'Malley vs. Vera 2)

Tai Tuivasa is the more recently active of the two (140 days out against 700 for Despaigne).

Style and statistical matchup

Tai Tuivasa lands 3.37 significant strikes per minute at 48% accuracy; Robelis Despaigne lands 2.11 at 59%. That 1.26-per-minute gap in Tai Tuivasa's favour is a real pace differential: over three rounds it compounds into a scorecard edge unless the lower-volume fighter is landing the more damaging shots. On the other side of the exchange, Tai Tuivasa absorbs 4.61 per minute with 42% striking defence and Robelis Despaigne absorbs 2.54 with 46%.

On the ground, Tai Tuivasa averages 0 takedowns per 15 minutes at 0% accuracy and defends 58% of attempts against him; Robelis Despaigne averages 0 at 0% and defends 50%. Neither fighter wrestles much by the averages, which points to a fight decided on the feet and makes the striking figures above the ones that matter.

All of these are career-to-date PropSports snapshots at capture, not as-of figures for this bout: they describe each fighter across every opponent, which is why the archive form above is read alongside them rather than replaced by them.

Round-level stats exist for 35 archived rounds of Tai Tuivasa's: 491 of 1010 significant strikes landed (49%), 14 per round, 0 of 3 takedowns, 18:07 of control time and 8 knockdowns. Round-level stats exist for 7 archived rounds of Robelis Despaigne's: 64 of 107 significant strikes landed (60%), 9.1 per round, 0 of 0 takedowns, 0:21 of control time and 1 knockdown. Those samples are small and uneven, so they colour the career averages rather than override them.

What could break the angle

The counter-case is mostly about sample. Robelis Despaigne will have been out 700 days by fight night on our archive dates: a long layoff the averages cannot price. Career averages are career-to-date snapshots at capture; they include fights outside this matchup context and are not as-of figures. There is also no odds snapshot in PropBetEdge data for this bout, so nothing above can be checked against a market yet; the read describes what to look for, not where value sits. A late weigh-in miss, a replacement or a change in scheduled rounds would each invalidate parts of it.

Final read

On the data, Robelis Despaigne's 9 inches of reach is the one material physical edge, and what it is worth depends on pace figures our tables do hold. The uncertainty is ordinary fight variance rather than missing data. What to monitor: the three-round format holding, the weigh-in, and once a price exists, where the fight goes the distance, method of victory, round betting and significant strikes markets open relative to this read. No model price or market line exists in PropBetEdge data for this bout, so this is not a pick; the Bettor's Edge panel above carries the impact score and the markets connected to the evidence.

Matchup page: Tai Tuivasa vs. Robelis Despaigne · Full card: UFC 331: Van vs. Pantoja 2 · Fighter pages: Tai Tuivasa, Robelis Despaigne.