Portland Fire vs. Indiana Fever

Platform comparison

Active sub-markets

Market context

The Portland Fire played the Indiana Fever on 20 May in Indianapolis, with the game going the full distance on the sportsbook board before Indiana closed it out 90-73. That result matters because the market’s 0% YES reading is far away from the actual price that was available in-play and pre-game: Oddschecker listed Indiana at -850, with Portland +13.5 and a total of 180.5, while the live FanDuel feed showed Indiana leading 89-73 with 25 seconds left in the fourth. On that cross-platform view, the consensus was never close to a true coin flip; it was a heavy Indiana lean, and the prediction market’s implied probability lagged the bookmaker market by an extreme margin.

For traders, the key catalysts were the injury and lineup confirmations before tip-off, then any late status changes that could have altered the spread or total. USA Today’s game notes page confirms the fixture date and venue at Gainbridge Fieldhouse, which is useful for checking whether any postponement or rescheduling risk exists after the fact; in this case, the contest was completed, so settlement should follow the final result rather than any make-up scenario. The market description also matters: because a postponement would keep it open until played, and only a cancellation would force a 50-50 split, the practical live risk sat in scheduling and availability news, not in any ambiguity over the winner once the game got under way.

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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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.

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'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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.