Will the fight be won by submission?
Crossbook compares what two exchanges, Polymarket and Kalshi, charge for the same event, and publishes a permanent scored record of its own forecasts under published rules.
Tracked on one venue, with Crossbook's own call on the record.
Bid/ask midpoint · retrieved 2026-08-22T20:55:10.976Z. Venue quote-update time is unavailable. Readings can be asynchronous.
27.0%bid 23.0% / ask 31.0%24h volume $125 · liquidity $2Kas of 22 Aug, 20:55 UTC · not refreshed recentlyView the event containing this market on PolymarketCrossbook forecast
Logged 20 Aug 2026, 23:27 UTC · Brier 0.0400
- Without the specific matchup disclosed, the correct anchor is the historical submission rate of ~15–19%, not a story about either fighter.
- The market's 32.5% implies traders believe this is a grappler-heavy matchup (e.g., a submission specialist like a high-level BJJ practitioner); if that priors-based information is real, the true rate could plausibly sit in the 25–35% band, so I shade modestly above base rate rather than fully reverting.
- Signal vs. narrative: the only hard signal available is the market price itself (thin book, $3.5k resting — low-information), so the divergence between my estimate and 32.5% is plausibly explained by matchup-specific knowledge I lack, but thin liquidity also means the price may be noisy.
What would change it: If the named fighters are both strike-heavy with low combined submission rates (e.g., neither has a submission win in 5+ fights), my estimate should drop toward 0.10.
Settlement source-12.5 probability points from the market at generation · low confidence · Polymarket
Base rate: Across major MMA promotions (UFC), roughly 15–19% of fights end by submission, with decisions now the most common outcome.
Chosen by hand.
Settlement
Every answer this call has been given, oldest first. Nothing is edited: a correction is a new entry beside the one it replaces.
VOIDsettled 23 Aug 2026, 03:24 UTC · recorded 23 Aug 2026, 03:24 UTC · entered by handsettlement
NOsettled 23 Aug 2026, 03:13 UTC · recorded 5 Oct 2026, 01:23 UTC · read from the venuesettlement
Corrected against Polymarket's settlement. Recorded VOID on 23 Aug 2026; Polymarket settled NO on 23 Aug 2026. VOID means the venue refunded or cancelled the market, which it did not.
Context
Polymarket prices this at 27.0%. No verified equivalent is currently listed on the other venue, so there is no cross venue comparison on this page.
Volume over the last 24 hours is thin, at about $125 on the busier venue.
This market has settled. The page is kept as a record of what the market said while the question was open, and of what Crossbook called.
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