UFC Fight Night: Otari Tanzilovi vs. Shane Collins (Featherweight, Prelims)

Platform comparison

Active sub-markets

Market context

Shane Collins and Otari Tanzilovi are scheduled to meet at featherweight on the UFC Fight Night prelims, and the market is already showing an extreme split: the crowd-implied probability sits at **0% YES**, even though the bout is live on the UFC’s own fight card listing and the official UFC Stats result page has already recorded Collins as the winner. That makes the contract’s current pricing look less like a live forecasting debate and more like a stale or post-fight artefact, because official UFC sources are the settlement standard and the event outcome is no longer a matter of pre-fight uncertainty.[3][7]

For comparison, this is the kind of matchup where prediction markets can diverge sharply from sportsbook lines if a result is effectively known before the contract is viewed, but the biggest clue here is the absence of genuine forward-looking uncertainty rather than a nuanced disagreement. Tapology lists the bout on the card, Kalshi hosts a matching fight market for the same pairing, and FanDuel has also carried fight-specific pricing, which shows the fight was widely distributed across platforms; however, once an official winner is posted by UFC, analyst consensus and market pricing typically converge immediately around that result.[1][5][7][9]

The main catalysts to watch are official UFC bout status updates, weigh-in confirmation, and any late schedule changes, because the market rules say a draw, no contest, cancellation, or postponement beyond 4 July 2026 would force a 50-50 resolution instead. UFC’s fighter page still lists the matchup as an upcoming fight, while social and preview content around the card suggests the bout was expected to proceed on 20 June 2026, so the practical risk now is less about competitive odds and more about whether the official result remains intact and unambiguous.[2][3][6][8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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

Where can I trade this market with the lowest fees?

On Best Prediction Markets UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Best Prediction Markets UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

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.