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

Platform comparison

Market context

Duško Todorović’s middleweight bout with Robert Valentin is a live UFC Fight Night matchup, but the market’s 0% YES price on Polymarket is far below what comparable pre-fight pricing implies on other venues. UFC Stats lists Todorović at 13-6 with higher striking volume and takedown output, while Valentin is 12-6-0 with a stronger submission profile and longer reach; that stylistic split is exactly the sort of fight where the win path matters more than a simple record read-through.[4] Comparable fight pages show Todorović around the low-to-mid 60s in win probability on preview models, while bookmaker-style pricing on aggregated pages has alternated between roughly Todorović +144 to +150 and Valentin -156 to -175, depending on the platform and time sampled.[9][14]

For traders comparing Polymarket with Kalshi, Betfair or Smarkets, the key difference is quoting convention and friction. Prediction markets usually present an implied probability, so 0% YES means the market is effectively pricing Todorović as near-impossible, whereas sportsbook and exchange feeds usually show decimal or American prices and may move more slowly because of fees, liquidity and margin; that makes a zero print on one venue harder to read as a pure consensus signal than a conventional odds line. The current split also reflects method risk: Todorović’s wins skew towards KO/TKO, Valentin’s towards submissions, and both fighters have enough finishing ability that a stoppage route can dominate the price more than pure form.[1][4][8]

The main catalysts are confirmation of the official UFC bout order, any last-minute weight, injury or card reshuffle news, and whether the fight actually reaches the scheduled August 1 slot, because a cancellation or postponement beyond the settlement cut-off would resolve to 50-50 under the market rules. UFC’s official result is the sole resolution source, so late changes around the event itself matter more than external model updates; a market can remain anchored on one platform while another adjusts for the same news because of different KYC access, fee drag and liquidity depth.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read UFC Fight Night: Duško Todorovic vs. Robert Valentin (Middleweight, Main Card) from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.