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UFC Fight Night: Allen vs. DuncanHeavyweightPrelims
Allen Frye Jr.WINNER
Allen
Frye Jr.
0-1UFC
28 yrsElo 1505*
VS
RJ Harris
RJ
Harris
28 yrsElo 1475*UFC debut
Final: Allen Frye Jr. by KO/TKO Punches
Who wins
Claude
65%
Harris
GPT
69%
Harris
Elo
54%
Frye
1505 vs 1475
Scouting

Both fighters made weight, with Frye at 246 lbs and Harris at 261 lbs; the bout was first reported as targeted in August. Frye had earlier been booked against Alvin Hines but withdrew for undisclosed reasons, and Harris took that fight instead.

  • Both AgentMMA reported on August 13, 2026 that Harris vs. Frye Jr. was being targeted for UFC Vegas 122 on October 10. source
  • Allen Frye Jr. Frye was originally booked to face Alvin Hines but withdrew for undisclosed reasons. RJ Harris replaced him and fought Hines in July. source
  • Both Frye weighed in at 246 lbs and Harris at 261 lbs for the heavyweight bout. source
Tale of the tapeUFC averages
n/a Height 6'3"
n/a Reach 78"
Orthodox Stance Orthodox
n/a Landed / min 9.00
n/a Absorbed / minlower better 6.60
0% Strike accuracy 57%
0% Strike defense 56%
0% TD accuracy 0%
0% TD defense 0%
Small sample: Allen Frye Jr., 1 UFC fight; RJ Harris, 0 UFC fights.
How it ends
Claude: KO/TKO 62%Claude: Submission 6%Claude: Decision 32%
62%KO/TKO
Claude calls KO/TKO, Round 1
KO/TKO 62%Submission 6%Decision 32%
GPT: KO/TKO 65%GPT: Submission 5%GPT: Decision 30%
65%KO/TKO
GPT calls KO/TKO, Round 2
KO/TKO 65%Submission 5%Decision 30%
Formnewest first
Allen Frye Jr.300 days out
L
Guilherme Pat
U-DEC · 2025-12-13
RJ Harris
No UFC fights
Why
Claude
RJ Harris
65% · KO/TKO (raw 64%)
  • Harris is 6-0 with 100% finishes, including a quick KO of Alvin Hines on about a week's notice in his UFC debut
  • Frye Jr. withdrew from the July bout for undisclosed reasons and has been out 295 days, with no information on the cause
  • Frye's only UFC result is a decision loss: he has shown durability but not finishing threat at this level
  • Both have one-fight UFC samples, and heavyweight volatility keeps the upset live
Write-up

The market has Harris at 66% (-235). Harris is flagged as a debutant, but that is stale data: he debuted on 2026-07-18, replaced Frye Jr. against Alvin Hines on about a week's notice, and stopped Hines quickly with punches. He is 6-0 with every win a finish. Frye Jr. is 6-1, and his only UFC fight was a decision loss to Guilherme Pat in December 2025. He then withdrew from the July Hines bout for undisclosed reasons and arrives off a 295-day layoff. That is short of the 450-day danger zone, but an unexplained withdrawal plus inactivity is a real question mark. Frye's UFC per-minute stats are empty or zero, so I give them no weight either way. The base case is a heavyweight fight where Harris has proven fight-ending power and Frye has shown he can go three rounds. Frye's path is to survive early, use his 265 lb frame in the clinch and drag it to a decision, as Pat did to him. Both fighters have one-fight UFC samples and it is heavyweight, so I stay just under the market and under the 65 small-sample ceiling.

GPT
RJ Harris
69% · KO/TKO (raw 65%)
  • Market favors Harris at 70%, with movement toward him already incorporated
  • Reported Harris knockout supports KO/TKO, but debut-status conflict limits confidence
  • Frye has the longer layoff; grappling and opposition quality remain uncertain
Write-up

Harris is the pick from the supplied 70% de-vigged market baseline. His reported knockout win supports the finishing prediction, but his debut flag contradicts that result; the conflicting records and sparse samples warrant capping confidence at 65%. Unreliable statistical fields provide no demonstrated stylistic advantage. Frye's listed 297-day layoff exceeds Harris's 80 days but remains below the approximately 450-day material-risk threshold. Opposition quality is unestablished, and Frye's earlier withdrawal does not establish a current injury. The market move is already priced in. Round timing is tentative; method percentages are conditional on a Harris win.