UFC Fight Night: Duško Todorovic vs. Robert Valentin (Middleweight, Main Card)

Platform comparison

Market context

Duško Todorović and Robert Valentin are set for a middleweight bout on the UFC Fight Night main card, and the live market is currently pricing the fight as if Valentin is the clearer side. Sportsbooks mostly have Valentin around -150 to -175, while Todorović is generally in the +125 to +153 range, which implies a win probability for Valentin of roughly 60-64% and for Todorović of about 40-43%.[2][5][9] That is materially different from the prediction market, where Kalshi is showing 0% YES on a Todorović contract, despite its own page listing Todorović at 41% and Valentin at 59%, indicating either a stale contract state or a very thin, mispriced book relative to the sportsbook consensus.[17]

For context, this is not a spot where the market is split evenly: the broader pricing cluster has consistently leaned Valentin, while one model-driven preview has Todorović only narrowly ahead at 51%, and another has him at 56% by KO/TKO, but both of those are outliers against the exchange and sportsbook numbers.[10][13] The most comparable reading is that Todorović is live, but not favoured, and the 0% YES print on the market contract is far below both analyst models and the betting market, so traders would normally expect that gap to be the main source of volatility if the contract remains open.[2][12][17]

The key catalysts are straightforward: official UFC bout status, walkout order, and any late change to the card, because the market only resolves on an official UFC result and turns 50-50 if the bout is a draw, no contest, not scored, cancelled, or pushed beyond 15 August 2026.[17] Current listings still point to the fight being scheduled, but with UFC cards, late medical withdrawals and reshuffles can move these contracts sharply if there is any change on fight week or on the day of the event.[10][20] The main cross-platform watchpoint is whether exchange pricing moves towards the sportsbook consensus before the official result, or whether the 0% YES quote simply reflects a contract already assumed to be dead by market participants.[2][17]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi vs Polymarket, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.