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UFC 161: Evans vs Henderson
Sean Pierson
Sean Pierson
13-6 · CAN
VS
Kenny Robertson
Kenny Robertson
12-2 · USA
June 15, 2013 · Winnipeg, Manitoba, Canada
Welterweight · 3 rounds
Sean Pierson def. Kenny Robertson by M-DEC, R3 5:00
Performance
Round by round
SSTDKDCtrl
R1
Pierson17/380/001:18
Robertson19/431/500:45
R2
Pierson17/440/000:05
Robertson25/480/102:14
R3
Pierson2/100/100:10
Robertson21/280/003:42
Total
Pierson36/920/101:33
Robertson65/1191/606:41

Scorecards

Pierson vs Robertson

RdJason RodgersSal D'AmatoSal SignorinoCommunity
R1---10-9.1
R2---9.8-9.2
R3---8.4-10
Total29-2828-2829-2828.2-28.3

Media (12 cards) · avg 28.628 · 7 Pierson · 0 Robertson · 5 draws

Official cards + public consensus via MMA Decisions. Per round: Pierson-Robertson.

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
PiersonWin probabilityRobertson
15.8%84.2%
KO / TKO
31%
Submission
18%
Decision
51%
Expected fight time: 10.8 min
What drives the pick

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

Predicted outcomes
Pierson16%
Wins by
Model
Equity
Mkt
KO / TKO5%33%
Submission1%8%
Decision10%59%
Predicted output
Sig. strikes35 (1946)act 36
Takedowns0.4 (0.01.8)act 0
Robertson84%
Wins by
Model
Equity
Mkt
KO / TKO26%31%
Submission16%19%
Decision42%50%
Predicted output
Sig. strikes39 (2251)act 65
Takedowns0.8 (0.02.8)act 1
Combined totals~74 sig strikes~1.2 takedownsmkt —
How it ends
mkt —
R121%
R218%
R310%
Distance51%
Fighter props
Most sig. strikestie 1.5%
Pierson
44.5%+121
Robertson
-12154.0%
Most takedownstie 44.7%
Pierson
19.7%+180
Robertson
-18035.6%
Significant strikes — over/under
Pierson
Expected: 35.2
35
Over 35
41.9%
+134
Exactly 35
1.9%
push
Under 35
56.2%
-134
04589
Robertson
Expected: 39.0
39
Over 39
41.7%
+136
Exactly 39
1.7%
push
Under 39
56.6%
-136
04998
Takedowns — over/under
Pierson
Expected: 0.4
0.5
Over 0.5
27.7%
+260
Under 0.5
72.3%
-260
035
Robertson
Expected: 0.8
1
Over 1
27.5%
+209
Exactly 1
15.0%
push
Under 1
57.5%
-209
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 10.8 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
Pierson15.8%42.7%−26.9+130
Robertson84.2%57.3%+26.9-140

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
67.8Striking56.8
Pierson +10.9
34.1Grappling41.1
Robertson +7.0
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
PiersonRobertson
Tale of the tape
Ratings (Elo)
1534
Pound-for-pound
1521
1533
Divisional
1520
1489
Striking offense
1481
1495
Striking defense
1499
1492
Grappling offense
1539
1521
Grappling defense
1525
Physical
37 yrs
Age
29 yrs
6'0"
Height
5'10"
76"
Reach
74"
Southpaw
Stance
Orthodox
Striking (UFC career)
4.18
Strikes landed / min
2.13
40%
Strike accuracy
51%
3.59
Strikes absorbed / min
2.90
68%
Strike defense
38%
Grappling (UFC career)
0.48
Takedowns / 15 min
0.64
20%
Takedown accuracy
14%
60%
Takedown defense
56%
0.5
Sub attempts / 15 min
1.3
Form & résumé
60%
UFC win rate
33%
+2
Win/loss streak
+1
60%
Last-5 win rate
33%
0%
Finish rate
100%
Recent opp. quality
266
Days since last fight
112
Recent form (last 5 UFC)
Sean Pierson
  • WLance BenoistU-DEC R3
    Close +2009mo before
  • WJake HechtU-DEC R3
    Close +1451y before
  • LDong Hyun KimU-DEC R3
    Close +3151y 6mo before
  • LJake EllenbergerKO/TKO R1
    Close +1852y 2mo before
  • WMatthew RiddleU-DEC R3
    Close +2102y 6mo before
Kenny Robertson
  • WBrock JardineSUB R1
    Close +1354mo before
  • LAaron SimpsonU-DEC R3
    Close +30011mo before
  • LMike PierceKO/TKO R2
    opp missedClose +2002y 4mo before
Pierson — win / loss by method
Record: 13-6-0

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, 3 losses
W
46% of wins
L
50% of losses
Submission
4 wins, 1 loss
W
31% of wins
L
17% of losses
Decision
3 wins, 2 losses
W
23% of wins
L
33% of losses
UFC
3win2loss0draw0NC
WinsLosses
0 (0%)KO/TKO(50%) 1
0 (0%)Submission(0%) 0
3 (100%)Decision(50%) 1
Non-UFC
10win4loss0draw0NC
WinsLosses
6 (60%)KO/TKO(50%) 2
4 (40%)Submission(25%) 1
0 (0%)Decision(25%) 1
Robertson — win / loss by method
Record: 12-2-0

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
3 wins, 1 loss
W
25% of wins
L
50% of losses
Submission
8 wins, 0 losses
W
67% of wins
L
0% of losses
Decision
1 win, 1 loss
W
8% of wins
L
50% of losses
UFC
1win2loss0draw0NC
WinsLosses
0 (0%)KO/TKO(50%) 1
1 (100%)Submission(0%) 0
0 (0%)Decision(50%) 1
Non-UFC
11win0loss0draw0NC
WinsLosses
3 (27%)KO/TKO() 0
7 (64%)Submission() 0
1 (9%)Decision() 0

Profiles

Experience
Pierson
Robertson
5
UFC fights
3
62.7 min · 12.5 avg
Octagon time
23.4 min · 7.8 avg
26y 10m
Career length
18y 4m
UFC schedule strength

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

Pierson
Robertson
60W–11L · 84.5%
Overall
31W–8L · 79.5%
22W–5L · 81.5%
Wins
9W–2L · 81.8%
38W–6L · 86.4%
Losses
22W–6L · 78.6%
Non-UFC schedule strength
Pierson
Robertson
65W–45L · 59.1%
Overall
60W–28L · 68.2%
35W–32L · 52.2%
Wins
60W–28L · 68.2%
30W–13L · 69.8%
Losses
0W–0L
Distance striking
Pierson
Robertson
4.98
Landed / min
4.17
34.9%
Accuracy
25.6%
71.9%
Defense
67.6%
0.24
Knockdowns / 15 min
0.00
63.8%
Time at distance
11.2%
Grappling & control
Pierson
Robertson
0.48
Takedowns / 15 min
0.64
20.0%
Takedown accuracy
14.3%
60.0%
Takedown defense
55.6%
0.48
Sub attempts / 15 min
1.28
65.6%
Control share
22.5%
Strike target map
Pierson
  • Head68%(178)div 62%
  • Body20%(53)div 22%
  • Legs12%(31)div 16%
Robertson
  • Head42%(21)div 62%
  • Body42%(21)div 22%
  • Legs16%(8)div 16%

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

Sean Pierson
CloseSSTDKDCtrl

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

Kenny Robertson
CloseSSTDKDCtrl

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