The Ultimate Fight Fan
+ Log a bet
UFC Fight Night: Allen vs. Costa
Juan Diaz
Juan Diaz
15-1-1 · PER
VS
May 16, 2026 · Las Vegas, Nevada, USA
Bantamweight · 3 rounds
135.5lb
Weigh-in
135.5lb
Juan Diaz def. Malcolm Wellmaker by SUB (Rear Naked Choke), R2 4:08
Performance
Round by round
SSTDKDCtrl
R1
Diaz6/162/401:28
Wellmaker10/230/000:00
R2 · 4:08
Diaz7/93/402:20
Wellmaker5/100/000:00
Total
Diaz13/255/803:48
Wellmaker15/330/000:00

Pre-fight

The model's read going in

The walk-forward model's call at the time of the bout — persisted out-of-sample, with no hindsight about the result.

Prediction
DiazWin probabilityWellmaker
46.6%53.4%
KO / TKO
33%
Submission
19%
Decision
48%
Expected fight time: 10.1 min
Retrospective pick: the walk-forward model's call at the time of the fight — persisted out-of-sample, with no hindsight about the result.
What drives the pick

Each bar is a feature's push on the model from the center axis. Red pushes toward Diaz, blue toward Wellmaker. Tap a bar for why.

Predicted outcomes
Diaz47%
Wins by
Model
Equity
Mkt
KO / TKO12%26%
Submission8%17%
Decision27%57%
Predicted output
Sig. strikes40 (1755)act 13
Takedowns1.0 (0.03.5)act 5
Wellmaker53%
Wins by
Model
Equity
Mkt
KO / TKO21%39%
Submission10%20%
Decision22%41%
Predicted output
Sig. strikes40 (1755)act 15
Takedowns0.5 (0.02.1)act 0
Combined totals~81 sig strikes~1.5 takedownsmkt —
How it ends
mkt —
R127%
R217%
R37%
Distance49%
Fighter props
Most sig. strikestie 1.2%
Diaz
49.0%+102
Wellmaker
-10249.8%
Most takedownstie 35.2%
Diaz
43.8%-208
Wellmaker
+20821.0%
Significant strikes — over/under
Diaz
Expected: 40.2
40
Over 40
39.4%
+151
Exactly 40
1.2%
push
Under 40
59.4%
-151
051101
Wellmaker
Expected: 40.4
40.5
Over 40.5
39.7%
+152
Under 40.5
60.3%
-152
051102
Takedowns — over/under
Diaz
Expected: 1.0
1
Over 1
35.3%
+130
Exactly 1
18.8%
push
Under 1
46.0%
-130
035
Wellmaker
Expected: 0.5
0.5
Over 0.5
33.3%
+201
Under 0.5
66.7%
-201
035

Odds are model-implied (no real prop market is priced for these). The “most” prices are draw-no-bet — a tie (for takedowns, usually 0–0) is a push, so each side is priced off its chance of winning given a result, while the % shown is the raw chance of landing strictly more. Drag a line in half-point steps: a half line (e.g. 2.5) is a clean over/under, while a whole number adds a third outcome — landing exactly on it, a push — so over, exact and under sum to 100%. On a whole number the over/under odds are draw-no-bet (priced off the decisive mass, since the push refunds), so the two sides stay mirror images rather than implying an arbitrage.

Expected fight time 10.1 min. Predicted-output ranges are percentiles of the model’s simulated fights: sig strikes the middle 50% (25th–75th); takedowns the wider 10th–90th, since they’re 0 in most fights so a narrow band would collapse to 0. Win-by-method = win probability × that fighter’s own method split: the model forecasts how the fight ends, and that forecast is divided between the corners by each fighter’s finishing record — UFC wins in full, earlier-career wins at half weight, as of fight night — reconciled so the fighters’ totals still equal their win probabilities and the methods still total the fight-level forecast above. “Equity” is each of those over that fighter’s win % — how they win given that they win — so a column adds to 100%, and it differs by corner. A fighter with no classifiable wins at any level leans on the fight-level split. “How it ends” is the model’s round-of-finish split. “Mkt” is the de-vigged market prop (consensus across books), shown for context, not as a betting signal; rounds & totals slots fill as that data lands. Percentages are apportioned by largest remainder, so each set adds to its total exactly and an individual figure can sit a point off its own rounding.

Model vs market
Final
ModelMarketGapLine
To win
Diaz46.6%33.5%+13.1+185
Wellmaker53.4%66.5%−13.1-230

Market % is the de-vigged (no-vig) consensus across the books that price both fighters; the line is the average across books with the min–max range in parentheses. Gap is the model minus the market in points (+ = the model rates that outcome above the market). Thin or one-sided markets are flagged or left blank rather than shown as a fabricated %. Shown for context, not as a bet — the closing line is the sharpest public price and the model trails it on average. For 5-round bouts the model splits its round-3+ finish mass into rounds 3–5 by the historical within-bucket rate, so the over-3.5 / 4.5 lines carry a model estimate.

Trait web
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
DiazWellmaker
Tale of the tape
Ratings (Elo)
1542
Pound-for-pound
1539
1542
Divisional
1557
1500
Striking offense
1513
1500
Striking defense
1504
1500
Grappling offense
1495
1500
Grappling defense
1499
Physical
27 yrs
Age
31 yrs
5'8"
Height
5'10"
69"
Reach
71"
Orthodox
Stance
Switch
Striking (UFC career)
Strikes landed / min
5.51
Strike accuracy
55%
Strikes absorbed / min
5.10
Strike defense
52%
Grappling (UFC career)
Takedowns / 15 min
0.00
Takedown accuracy
0%
Takedown defense
50%
Sub attempts / 15 min
0.0
Form & résumé
UFC win rate
67%
Win/loss streak
-1
Last-5 win rate
67%
Finish rate
100%
Recent opp. quality
Days since last fight
182
Recent form (last 5 UFC)
Juan Diaz
No prior UFC fights.
Malcolm Wellmaker
  • LEthyn EwingU-DEC R3
    Close -4206mo before
  • WKris MoutinhoKO/TKO R1
    Close -181111mo before
  • WCameron SaaimanKO/TKO R1
    Close -1261y 1mo before
Diaz — win / loss by method
Record: 15-1-1

Bar length is fight count (largest bar = full width); shading splits finishes by round and decisions by unanimous vs split — tap a bar for the round-by-round count.

KO/TKO
5 wins, 0 losses
W
33% of wins
L
0% of losses
Submission
2 wins, 0 losses
W
13% of wins
L
0% of losses
Decision
8 wins, 1 loss
W
53% of wins
L
100% of losses
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
15win1loss1draw0NC
WinsLosses
5 (33%)KO/TKO(0%) 0
2 (13%)Submission(0%) 0
8 (53%)Decision(100%) 1
Wellmaker — win / loss by method
Record: 10-1-0

Bar length is fight count (largest bar = full width); shading splits finishes by round and decisions by unanimous vs split — tap a bar for the round-by-round count.

KO/TKO
6 wins, 0 losses
W
60% of wins
L
0% of losses
Submission
2 wins, 0 losses
W
20% of wins
L
0% of losses
Decision
2 wins, 1 loss
W
20% of wins
L
100% of losses
UFC
2win1loss0draw0NC
WinsLosses
2 (100%)KO/TKO(0%) 0
0 (0%)Submission(0%) 0
0 (0%)Decision(100%) 1
Non-UFC
8win0loss0draw0NC
WinsLosses
4 (50%)KO/TKO() 0
2 (25%)Submission() 0
2 (25%)Decision() 0

Profiles

Experience
Diaz
Wellmaker
0
UFC fights
3
Octagon time
19.6 min · 6.5 avg
Career length
4y 1m
UFC schedule strength

Opponents' records on fight night — toggle their full cross-promotional record vs UFC bouts only.

Diaz
Wellmaker
Overall
31W–10L · 75.6%
Wins
23W–8L · 74.2%
Losses
8W–2L · 80.0%
Non-UFC schedule strength
Diaz
Wellmaker
114W–63L · 64.4%
Overall
35W–20L · 63.6%
104W–62L · 62.7%
Wins
35W–20L · 63.6%
10W–1L · 90.9%
Losses
0W–0L
Distance striking
Diaz
Wellmaker
Landed / min
5.74
Accuracy
49.7%
Defense
54.9%
Knockdowns / 15 min
1.53
Time at distance
71.9%
Grappling & control
Diaz
Wellmaker
Takedowns / 15 min
0.00
Takedown accuracy
0.0%
Takedown defense
50.0%
Sub attempts / 15 min
0.00
Control share
50.3%
Strike target map
Diaz
  • Head0%(0)div 62%
  • Body0%(0)div 21%
  • Legs0%(0)div 17%
  • No strike data on record.
Wellmaker
  • Head44%(47)div 62%
  • Body44%(48)div 21%
  • Legs12%(13)div 17%

Where each fighter lands significant strikes (career). “div” = the weight-class average.

Juan Diaz

No UFC fights on record.

Per-fight: SS & TD shown landed/attempted; Close = consensus closing line.

Malcolm Wellmaker
CloseSSTDKDCtrl

Per-fight: SS & TD shown landed/attempted; Close = consensus closing line.