The Ultimate Fight Fan
+ Log a bet
UFC Fight Night: Lewis vs. Daukaus
VS
Macy Chiasson
Macy Chiasson
7-1 · USA
December 18, 2021 · Las Vegas, Nevada, USA
Featherweight · 3 rounds
145.0lb
Weigh-in
148.5lbMissed +2.5
Raquel Pennington def. Macy Chiasson by SUB (Guillotine Choke), R2 3:07
Performance
Round by round
SSTDKDCtrl
R1
Pennington24/380/000:31
Chiasson15/481/101:07
R2 · 3:07
Pennington21/410/000:38
Chiasson11/380/100:11
Total
Pennington45/790/001:09
Chiasson26/861/201:18

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
PenningtonWin probabilityChiasson
34.1%65.9%
KO / TKO
27%
Submission
31%
Decision
41%
Expected fight time: 10.2 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 Pennington, blue toward Chiasson. Tap a bar for why.

Predicted outcomes
Pennington34%
Wins by
Model
Equity
Mkt
KO / TKO6%17%7%
Submission10%31%14%
Decision18%52%38%
Predicted output
Sig. strikes30 (1241)act 45
Takedowns0.8 (0.02.8)act 0
Chiasson66%
Wins by
Model
Equity
Mkt
KO / TKO21%33%12%
Submission21%31%4%
Decision24%36%25%
Predicted output
Sig. strikes37 (1551)act 26
Takedowns0.8 (0.02.8)act 1
Combined totals~68 sig strikes~1.5 takedownsmkt —
How it ends
mkt —
R124%
R219%
R316%
Distance41%
Fighter props
Most sig. strikestie 1.4%
Pennington
42.5%+132
Chiasson
-13256.1%
Most takedownstie 33.3%
Pennington
33.2%+101
Chiasson
-10133.5%
Significant strikes — over/under
Pennington
Expected: 30.4
30.5
Over 30.5
39.7%
+152
Under 30.5
60.3%
-152
03977
Chiasson
Expected: 37.3
37.5
Over 37.5
39.5%
+153
Under 37.5
60.5%
-153
04794
Takedowns — over/under
Pennington
Expected: 0.8
1
Over 1
28.6%
+183
Exactly 1
18.8%
push
Under 1
52.5%
-183
035
Chiasson
Expected: 0.8
1
Over 1
28.8%
+181
Exactly 1
19.2%
push
Under 1
52.1%
-181
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 10.2 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
Pennington34.1%56.8%−22.7-148
Chiasson65.9%43.2%+22.7+121
By method
Pennington by KO/TKO9.2%7.3%+1.9+1029
Pennington by submission10.7%14.2%−3.5+482
Pennington by decision14.1%37.9%−23.8+118
Chiasson by KO/TKO17.9%11.5%+6.4+617
Chiasson by submission20.7%4.1%+16.6+1896
Chiasson by decision27.4%25.0%+2.4+230
Total rounds (over)
Over 1.5 rds76.1%79.2%−3.1-549
Over 2.5 rds57.2%70.4%−13.2-305
Goes the distance
Fight goes to decision41.5%67.0%−25.5-254

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
70.0Striking70.4
Chiasson +0.3
45.1Grappling38.4
Pennington +6.7
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
PenningtonChiasson
Tale of the tape
Ratings (Elo)
1565
Pound-for-pound
1563
1495
Divisional
1522
1484
Striking offense
1503
1513
Striking defense
1507
1507
Grappling offense
1513
1503
Grappling defense
1497
Physical
33 yrs
Age
30 yrs
5'7"
Height
5'11"
67"
Reach
72"
Orthodox
Stance
Orthodox
Striking (UFC career)
3.59
Strikes landed / min
4.16
49%
Strike accuracy
49%
3.21
Strikes absorbed / min
2.17
63%
Strike defense
46%
Grappling (UFC career)
1.11
Takedowns / 15 min
0.98
29%
Takedown accuracy
21%
65%
Takedown defense
64%
0.7
Sub attempts / 15 min
0.5
Form & résumé
64%
UFC win rate
83%
+2
Win/loss streak
+2
60%
Last-5 win rate
80%
22%
Finish rate
60%
Recent opp. quality
91
Days since last fight
273
Recent form (last 5 UFC)
Raquel Pennington
  • WPannie KianzadU-DEC R3
    Close -1313mo before
  • WMarion ReneauU-DEC R3
    Close -1601y 6mo before
  • LHolly HolmU-DEC R3
    Close +1051y 11mo before
  • WIrene AldanaS-DEC R3
    Close +1152y 5mo before
  • LGermaine de RandamieU-DEC R3
    missedClose +1803y 1mo before
Macy Chiasson
  • WMarion ReneauU-DEC R3
    Close -2369mo before
  • WShanna YoungU-DEC R3
    Close -8001y 10mo before
  • LLina LansbergU-DEC R3
    Close -4302y 3mo before
  • WSarah MorasKO/TKO R2
    Close -7002y 8mo before
  • WGina MazanyKO/TKO R1
    Close -5252y 10mo before
Pennington — win / loss by method
Record: 12-8-0

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
1 win, 1 loss
W
8% of wins
L
13% of losses
Submission
3 wins, 1 loss
W
25% of wins
L
13% of losses
Decision
8 wins, 6 losses
W
67% of wins
L
75% of losses
UFC
9win5loss0draw0NC
WinsLosses
0 (0%)KO/TKO(20%) 1
2 (22%)Submission(0%) 0
7 (78%)Decision(80%) 4
Non-UFC
3win3loss0draw0NC
WinsLosses
1 (33%)KO/TKO(0%) 0
1 (33%)Submission(33%) 1
1 (33%)Decision(67%) 2
Chiasson — win / loss by method
Record: 7-1-0

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
2 wins, 0 losses
W
29% of wins
L
0% of losses
Submission
2 wins, 0 losses
W
29% of wins
L
0% of losses
Decision
3 wins, 1 loss
W
43% of wins
L
100% of losses
UFC
5win1loss0draw0NC
WinsLosses
2 (40%)KO/TKO(0%) 0
1 (20%)Submission(0%) 0
2 (40%)Decision(100%) 1
Non-UFC
2win0loss0draw0NC
WinsLosses
0 (0%)KO/TKO() 0
1 (50%)Submission() 0
1 (50%)Decision() 0

Profiles

Experience
Pennington
Chiasson
14
UFC fights
6
202.6 min · 14.5 avg
Octagon time
61.4 min · 10.2 avg
14y 5m
Career length
8y 9m
UFC schedule strength

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

Pennington
Chiasson
148W–53L · 73.6%
Overall
46W–22L · 67.6%
97W–38L · 71.9%
Wins
37W–18L · 67.3%
51W–15L · 77.3%
Losses
9W–4L · 69.2%
Non-UFC schedule strength
Pennington
Chiasson
17W–11L · 60.7%
Overall
1W–0L · 100.0%
7W–9L · 43.8%
Wins
1W–0L · 100.0%
10W–2L · 83.3%
Losses
0W–0L
Distance striking
Pennington
Chiasson
4.82
Landed / min
5.83
37.8%
Accuracy
33.9%
70.1%
Defense
55.5%
0.00
Knockdowns / 15 min
0.49
41.6%
Time at distance
24.3%
Grappling & control
Pennington
Chiasson
1.11
Takedowns / 15 min
0.98
28.8%
Takedown accuracy
21.1%
65.2%
Takedown defense
64.3%
0.67
Sub attempts / 15 min
0.49
50.0%
Control share
65.7%
Strike target map
Pennington
  • Head59%(426)div 59%
  • Body29%(211)div 24%
  • Legs12%(90)div 17%
Chiasson
  • Head57%(145)div 59%
  • Body39%(100)div 24%
  • Legs4%(10)div 17%

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

Raquel Pennington
CloseSSTDKDCtrl

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

Macy Chiasson
CloseSSTDKDCtrl

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