CWS Odds — Who Wins Omaha
50K Monte Carlo · Regional sims · Pitching edge
50,000-sim Monte Carlo through the NCAA tournament: regional survival, super-regional, and national-title probabilities for every team in the projected field. Team ratings powered by PEAR Ratings. For the upstream Field of 64, see the Field of 64 projection.
Projected bracket walk
The model's most-likely path through the field, built from the same 50,000-sim Monte Carlo that drives the odds table. Each round's pick is the modal winner among the sims where every prior round's modal pick also occurred -- so the percentage next to each team reads as "given the walk to date, the share of sims in which this team advances from this round." A 62% conditional pick reads very differently from an 84% one. Bullpen depletion from regional play carries into the super and into Omaha (α = 0.35 between rounds, α = 0.75 before the bo3 final), so a team that grinds through a 6-game regional pays for it.
The modal walk shows the single most-likely sequence of round winners. Because bracket structure matters, the champion in this walk can differ from the team with the highest overall championship probability -- both views are shown.
Upset Watch
The modal walk above shows the most likely path one round at a time. The 50K Monte Carlo tells a richer story by sampling every game with rating noise. These are the regionals where either the 1-seed is barely a favorite or a lower seed clears the 25% upset threshold. Sorted by upset weight.
Pitching Edge
Starter rotation strength for the title contenders. Color-coded ERAs: green ≤ 3.00, red ≥ 4.50. Where the source column reads D1B probable the data is the official D1Baseball weekend probable; Estimated means we inferred from this season's pitcher appearance log when probables weren't yet announced. Bracket sims run on ?rotation_aware=1 use these per-game deltas instead of the team rating average.
Injury Report
Where pitcher health has pulled a team's rating down. Each entry is a rating-point adjustment; in our per-game logit, one point is worth roughly nine percentage points of single-game win probability. Sorted by magnitude.
How we built this — model, bracket, field
The model
Per-game logit fit on 72,809 D1-D1 games (2014–2024) plus the current PEAR Ratings. K_DIFF = 0.37 on rating diff (CI [0.364, 0.379]). HFA_LOGIT = 0.23, ~6% home boost (CI [0.217, 0.249]). Per-game Gaussian rating noise σ ≈ 2.0 captures starter-day variance. Fatigue penalty 0.40 rating pts per cumulative game in a regional or super series.
Bracket structure
16 regionals × 4 teams each (double elimination) → 8 super regionals (best-of-3) → 8 teams arrive in Omaha, split into two 4-team double-elims → best-of-3 final. Host bonus has been fit to zero in the current era -- it's fully captured by home-field advantage on neutral-vs-host games.
Field of 64
We pull weekly projections from D1Baseball and Baseball America, plus our own auto-projection from PEAR Ratings, then blend them into a consensus field (3-of-3 teams first, then 2-of-3 by rating, then 1-of-3 to fill 64). Selection day is Monday, May 25 -- after that we replace projections with the actual NCAA bracket.