Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For K-12 Students · Tournament Odds

Tournament Odds for a dart throw

Built for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework. Simulate a dart throw live below — adjust the inputs and watch it respond, right in your browser.

Tournament Bracket OddsLive

who wins it all?

Controls

Presets

Skill spread (Elo)

In a single-elimination bracket, the best team is far from guaranteed to win — it must string together several wins, each a fresh chance to be upset. Simulating thousands of tournaments reveals the true championship odds for each seed. With little skill spread the field is wide open; with a big gap the top seed dominates, but even then rarely tops 50%.

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Data Inspector

Top seed odds22%

Bottom seed odds5.5%

Teams8

Governing equation

P_{w in} = \frac{1}{1 + 1 0 ^{- Δ/400}}, Δ = 200, matches = N - 1 = 7

Reading this result: At this moderate spread the top seed takes about 22% of titles: favored, but each single-elimination round is a fresh chance to be knocked out.

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Frequently asked questions

Is this good for k-12 students?: Yes — this version of "Tournament Odds for a dart throw" is framed for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.