JJ Aldrich
14-7-0
VS
2026-09-12
UFC Fight Night: Elliott vs. Chairez
Women's Flyweight
Regina Malpica Rivera
"Kill Bill"
5-0-0
Thin UFC data
ENSEMBLE PREDICTION
Regina Malpica Rivera 'Kill Bill'
57.3% CONFIDENCE
How It Ends
72%
Decision
16%
KO / TKO
12%
Submission
Decision71.9%
KO / TKO15.8%
Submission12.3%
If it's a finish, which round
Round 135.9%
Round 239.8%
Round 3+24.3%
A separate model trained only on how fights end (not who wins) — 28% estimated chance this fight is finished rather than going to a decision.
Why XGBoost leans this way
JJ Aldrich
Regina Malpica Rivera
Age edge (significant gap)
Matchup +12.05
16%
Strike rate delta r1 to r3
Regina Malpica Rivera -0.94
8%
Experience edge (total fights)
Matchup +16
7%
Strike rate delta r1 to r3
JJ Aldrich -1.67
6%
Age
Regina Malpica Rivera 21.9 yrs
6%
Defensive skill edge
Matchup 0.05
6%
Head absorption rate
JJ Aldrich 53%
5%
Strikes absorbed/min
JJ Aldrich 3.97
5%
Age
JJ Aldrich 34.0 yrs
4%
Net striking dominance
Matchup -0.11
4%
Body strikes absorbed per min
JJ Aldrich 1.16
3%
Fights per year
JJ Aldrich 1.82
3%
Elo rating edge
Matchup 22
3%
Total career fights (incl. non-UFC)
Regina Malpica Rivera 5
2%
← pushes toward JJ Aldrich pushes toward Regina Malpica Rivera →
Bars show each factor's SHAP contribution to this specific prediction — how much it pushed the win probability toward one fighter, given everything else the model knows. Percentages are each factor's share of the total push across the top 30 factors.

JJ Aldrich

Win Streak
2
Finish Rate
20%
Avg Duration
14.0m
Last 5 fights (most recent first)
W DEC
W DEC
L DEC
W DEC
W KO
Height: 165 cm
Weight: 125 lbs
Reach: 170 cm
Stance: Southpaw

Regina Malpica Rivera

Win Streak
1
Finish Rate
N/A%
Avg Duration
15.0m
Last 5 fights (most recent first)
W DEC
Height: N/A cm
Weight: 135 lbs
Reach: N/A cm
Stance: N/A
Head-to-Head Stats
JJ Aldrich
ADVANTAGE
Regina Malpica Rivera
Striking Accuracy
46.0%
+0.4%
46.5%
Strikes Landed/Min
3.71
+1.64
5.35
Strikes Absorbed/Min
3.97
+1.11
5.08
Striking Defense
62.5%
+5.8%
56.7%
Takedown Accuracy
30.1%
+6.7%
36.8%
Takedown Defense
64.8%
+3.8%
61.0%
Knockdowns/Fight
0.06
+0.05
0.11
Avg Control Time (sec)
73.55
+2.39
71.16
Strikes Per Round
18.27
+4.04
22.31
Head Strike %
72.9%
+8.5%
64.4%
Body Strike %
15.6%
+8.6%
24.2%
Leg Strike %
11.5%
+0.1%
11.4%
Last 5 Win Rate
80.0%
+20.0%
100.0%
Last 5 Finish Rate
20.0%
+20.0%
0.0%