## Tournament Structure and Probability
Tournament outrights (knock-out competitions) produce compound probability chains — a team must win multiple matches sequentially to win the tournament.
P(team wins tournament) = P(wins R1) × P(wins R2) × ... × P(wins final)
Each round is conditional on the previous round's results. The path through the bracket matters enormously.
## The Bracket Effect
In a seeded draw, strong teams are separated on opposite sides of the bracket — designed to produce a "best vs best" final. But upsets occur. The team on the "easier" side of the bracket has a higher win probability even if intrinsically weaker.
**Example:** In the World Cup, a group with weaker opposition at the knock-out stage can elevate a host team's tournament win probability significantly beyond their raw rating.
Tournament models must incorporate the full bracket path — not just absolute team strength.
## Early Pricing: The Largest Inefficiency Window
When a major tournament draw is completed, the outright market reprices rapidly. Teams with easy-looking paths see their odds shorten; teams on difficult sides see their odds lengthen.
The first 30–60 minutes after the draw are the highest-edge window: your bracket simulation may reach a different probability than the market for specific teams before the market fully reprices.
## Each-Way Tournament Betting
Most outright markets offer each-way at 1/4 or 1/5 odds for top-N placements (top 4, top 8). In large 32-team tournaments, identifying undervalued teams to reach the semi-finals (even if unlikely to win) often has better EV than the outright winner market.
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