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

Platform comparison

Active sub-markets

Market context

Otari Tanzilovi meets Shane Collins in a featherweight bout on the UFC Fight Night card headlined by Kape vs Horiguchi, and the market is already pricing the matchup as a longshot for Tanzilovi. BetMGM listed Collins as the betting favourite at -225 and Tanzilovi as the +185 underdog, which is consistent with the crowd-implied 0% YES on Polymarket: in practice, that means traders are treating a Tanzilovi win as a very low-probability outcome rather than impossible.[1][4]

The closest comparable read is that Collins is coming in with the cleaner pre-fight profile. ESPN lists both men at 5'10" and 145 lbs, while UFC-related fight listings identify this as a professional featherweight contest on the June 20 card, which makes official result timing straightforward if the bout is completed.[2][7] UFC Stats later recorded Collins as the unanimous-decision winner over Tanzilovi at UFC Fight Night: Kape vs Horiguchi, showing how markets tied to official UFC resolution can move sharply once the result is posted.[6]

For platform comparison, Polymarket displays a binary implied probability, so a 0% YES can still leave room for a tiny residual chance that is not shown cleanly, whereas Betfair-style decimal pricing and sportsbook moneylines make the same view easier to read in price terms.[1][4] Kalshi’s similar fight market is framed around the original June 20 schedule and explicitly covers postponement and settlement edge cases, while regulated books such as FanDuel and BetMGM require account verification and often apply wider margin than exchange-style platforms, which matters when traders compare this fight across venues.[4][8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read UFC Fight Night: Otari Tanzilovi vs. Shane Collins (Featherweight, Prelims) 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 quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

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). Kalshi Alternative UK routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi Alternative 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.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Kalshi Alternative UK?

Zero. Kalshi Alternative UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.