March Madness 2026 Β· Final Four

2026 NCAA Final Four
Championship Probability Analysis

Multi-source analysis by Agnite AI  Β·  March 2026

Built as a research demo β€” not betting advice.

πŸ“Š Live market data: Polymarket Β· $24.5M volume πŸ’¬ Join the discussion on LinkedIn

Executive Summary

Agnite analyzed the 2026 NCAA Final Four by pulling live data from multiple sources β€” season stats, advanced metrics, sportsbook lines, and prediction market odds β€” then built a probability model from scratch. Here's what it found.

Predicted Champion
Michigan
31.6% probability
Biggest Market Gap
Illinois
Model: 26.7% vs Market: 18.1%
Most Likely Final
Michigan vs Illinois
31.4% β€” all-Big Ten title game
Data Sources
10+
KenPom, Synergy, FanDuel, Polymarket…
Team Agnite Model Polymarket Divergence
Michigan 31.6% 35.0% -3.4%
Illinois 26.7% 18.1% +8.6% β˜…
Arizona 24.9% 32.9% -8.0%
UConn 16.7% 13.9% +2.8%

The headline finding: The model's biggest divergence from the prediction market is Illinois β€” priced at 18.1% on Polymarket but valued at 26.7% by the model, driven by their #2 national offensive efficiency, a defensive transformation during March Madness, and the tallest roster in the country.

Scroll down for the full analysis β€” semifinal breakdowns, advanced metrics, team profiles, and methodology.

The Prompt

"Analyze the remaining Final Four teams using live data and predict championship probabilities."

From a single prompt, Agnite autonomously executed a multi-step research workflow:


Semifinal Matchups

Semifinal 1 Β· Saturday
Michigan #1 -1.5
55%
Arizona #1 +1.5
45%
Semifinal 2 Β· Saturday
Illinois #3 -2.0
57%
UConn #2 +2.0
43%

Championship Probabilities

The Agnite model price vs. two major market benchmarks. The β˜… Illinois edge is the largest divergence.

Agnite Model β€” Championship Win Probability

Michigan
31.6%
Illinois β˜…
26.7%
Arizona
24.9%
UConn
16.7%
Team Record Agnite Model Polymarket FanDuel (fair) Edge vs. Poly
Michigan 35-3 31.6% 35.0% 36.1% (+155) -3.4%
Illinois β˜… 28-8 26.7% 18.1% 18.4% (+400) +8.6% β˜…
Arizona 36-2 24.9% 32.9% 34.1% (+170) -8.0%
UConn 33-5 16.7% 13.9% 11.5% (+700) +2.8%

Championship Game Matchup Probabilities

How likely is each possible title game? The semifinal brackets set up a potential all-Big Ten championship.

Matchup Probability
Michigan  vs  Illinois 31.4%
Arizona  vs  Illinois 25.7%
Michigan  vs  UConn 23.7%
Arizona  vs  UConn 19.4%

Most likely final: Michigan vs Illinois β€” a 31.4% chance of an all-Big Ten title game.


Advanced Metrics Comparison

Head-to-head statistical profiles from KenPom, Synergy Sports, and tournament data. Green bold = best among the four teams.

Metric Michigan Arizona Illinois UConn
KenPom Net Efficiency +39.02 (#1) +38.76 (#2) β€” β€”
Adj. Offensive Efficiency #5 #4 #2 (131.2) #28
Adj. Defensive Efficiency #1 #2 #20 (reg season) #9
Tempo (Poss/40 min) #22 (fastest) #56 #296 #319 (slowest)
Turnover % #154 #62 #10 (best) #174
Offensive Rebound % #48 #4 #3 #26
Free Throw % 74.2% 73.5% 78.0% (#14) 71.9% (#206)
Offensive 2PT % 61.3% (#2) 55.2% ~57% ~57%
Defensive 2PT % ~#2 #1 β€” ~#3
3PT Shooting % 36.9% (#30) 36.7% <35% <35%
3PT Defense % 30.4% (#16) ~30.7% ~31.1% ~31%
Tourney PPP Allowed β€” β€” 0.976 (best) β€”
Tourney FG% 55.9% β€” β€” β€”
Avg Tourney Margin ~25 pts β€” β€” β€”
Synergy Halfcourt Offense 96th pctl β€” 97th pctl β€”
Synergy Transition Offense β€” 94th pctl 97th pctl β€”
Experience 2nd 4th (youngest) 3rd 1st (most exp.)

Key Strengths & Weaknesses

Michigan 35-3 Β· #1 Seed

Strengths
  • #1 defense nationally (adj. efficiency)
  • Elite 2PT shooting (61.3%, #2) & 3PT shooting (36.9%, #30)
  • Fastest tempo in the Final Four (#22)
  • 25+ point average tournament margin
Weaknesses
  • Turnover rate (#154 nationally)
  • Offensive rebounding only #48
  • Untested β€” no close games in tournament

Arizona 36-2 Β· #1 Seed

Strengths
  • 36-2 record β€” best in the Final Four
  • #2 defense nationally
  • Elite defensive 2PT% (#1 in country)
  • Top-4 offensive rebounding
Weaknesses
  • Trailed Purdue at half in Elite Eight
  • Low 3PT volume
  • Youngest / most inexperienced roster

Illinois 28-8 Β· #3 Seed

Strengths
  • #2 offense nationally (131.2 adj. efficiency)
  • Defense transformed in March β€” best tourney PPP allowed (0.976)
  • Tallest roster in the USA
  • Best FT% (78.0%) and lowest TO% (#10)
Weaknesses
  • 8 regular-season losses (most in field)
  • Slow tempo (#296 nationally)
  • Regular-season defense was only #20

UConn 33-5 Β· #2 Seed

Strengths
  • Most experienced roster in the Final Four
  • 2024 championship DNA
  • 19-point comeback vs #1 Duke in tourney
  • Solid defense (#9 adj. efficiency)
Weaknesses
  • Worst offense of the Final Four (#28 nationally)
  • Poor free throw shooting (#206, 71.9%)
  • Weak defensive rebounding (#85)

Methodology

  1. Collected season records, advanced metrics (KenPom, Synergy, Torvik), and tournament performance data
  2. Gathered current betting lines (FanDuel spreads) and prediction market prices (Polymarket)
  3. Converted American odds to implied probabilities, removed vig to get fair odds
  4. Estimated semifinal win probabilities using spread-to-probability conversion (~3% per point)
  5. Assigned championship game conditional probabilities based on matchup-specific factors (offensive/defensive efficiency gaps, stylistic matchups, rebounding, experience, tempo)
  6. Computed full championship probability:
    P(title) = P(win semi) Γ— Ξ£[ P(opponent wins other semi) Γ— P(beat opponent in final) ]

Key Finding

The model's biggest divergence from the market: Illinois is priced at 18.1% on Polymarket but the model assigns 26.7% β€” a gap driven by their elite offense (#2 nationally), a defensive transformation in March Madness, and the tallest roster in the country.