Polymarket boxing data: bout pricing at 250ms

Boxing questions on Polymarket cover match winners and victory methods on title-fight nights. The live book is free from the official API; the historical book is not available from it.

The /book endpoint serves only the present moment, so 'what did the market make of that tenth round?' after an event requires depth recorded during the bout. PolyOrderbooks captures full L2 ladders four times per second for the boxing series it lists.

Boxing bout contracts — winner YES/NO and method markets — trade as binaries and resolve to the shared record: bid and ask ladders with sizes, a captured_at timestamp, and the winning outcome.

No boxing-specific count is quoted here because the family is measured as long tail; the honest indicative sizes live on the sports data coverage page.

• Live ladder — official /book, free and keyless, current moment only (what the API serves).
• Historical depth — full L2 books at 250ms over REST, free Starter with 3 days, paid windows to 120 days.
• Discovery — /v1/series for boxing events; /v1/markets for bout questions and slugs.
• Coverage — measured counts per sport on the sports data page.

A title night runs undercards before the main event, and the headline winner market barely moves until the first genuine exchange lands. The official API serves that ladder live; the archive keeps the round-one stoppage's book, or the judges'-cards thriller's final round, for any replay later.

Boxing questions cover match winners and victory methods on title-fight nights, inside the 700k+ long tail with the other pooled families. Each bout settles its own book, so a card delivers one closed book per fight and the undercard results reprice the later lines in a way the record shows cleanly.

Three repeatable measurements fit the tape: whether an early-round knockdown reprises the winner line within the same round, whether method-of-victory markets preserve their premium on the undercard favourites, and whether the main-event book tightens to a near-hung bound in the final round regardless of the cards.

The pull is mechanical — series for the fight card, markets for the bouts, archive window around the main event — and the return is the full ladder with sizes on every recorded second.

The round-end markers and the strike clock are the seams; an early finish reprises every later book on the same card before the next fighter walks.

As long tail, a single event is a case study; a season of fight nights in one window is the scale for broader reads.

Starter holds 3 days of 250ms — a full fight weekend — and Pro reaches 120 days.

Study one: measure whether an early-round knockdown reprises the winner line within the round, counting frames to the new executable price.

Study two: compare method-of-victory premiums between undercard favourites and the main event; the archive holds the week's books intact for the comparison.

Study three: test whether the main-event book tightens to within one band of the bound in the final round regardless of the scorecards, using the recorded one-sided baseline.

One fight card on Starter starts the file; a season of cards in Pro's 120 days is the smallest sample that separates card-specific from venue-wide behavior.

First exercise: one main event. Pull the bout window from the archive and count the executable-price moves round by round. An early stoppage settles the book mid-stream, and the frame-by-frame record is the exact biography of the fight night.

Then compare the winner book to the method book at the same second during the fifth round; the premium divergence under sustained pressure is the bout-read the record preserves best.

Resolve the bout and keep the card queryable; a fight weekend on Starter is the honest first pull, and a full schedule of cards in the Pro window is the smallest dataset for card-level conclusions.

• Sports data
• Market data
• Order book data