Indiana Fever vs. Phoenix Mercury

Platform comparison

Market context

On 9 July at 10:00PM ET, the Indiana Fever and Phoenix Mercury will face off in a WNBA matchup where the final score, including any overtime, determines the winner. In prediction markets, a YES share on “Indiana Fever” means you believe the Fever will win; a NO share means you expect the Mercury to prevail. This specific market resolves to the winning team’s name, or remains open if postponed, and settles 50–50 only if the game is cancelled without a make-up.

Historically, when two teams meet with a crowd-implied 50% probability, the outcome often mirrors their recent head-to-head form. Just weeks earlier, on 22 June, the Fever defeated the Mercury 86–77, with Caitlin Clark scoring 24 points and Kelsey Mitchell adding 22 [2]. However, in their next encounter on 24 June, the Mercury won 111–109, led by Kahleah Copper’s 28 points [9]. This swing suggests both sides are capable of winning, making the current 50% split a fair reflection of their competitive balance.

Traders should monitor pre-game announcements on player availability, especially for Fever stars like Clark and Mitchell, whose fitness can shift odds quickly. Bookmakers currently list Indiana as 5.5-point favourites with an over/under of 184.5, indicating expectations of a high-scoring contest [3]. Any late injury reports or schedule changes—such as travel delays—could alter the probability, so checking official WNBA updates before the game is essential for informed positioning.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Indiana Fever vs. Phoenix Mercury across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Market UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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 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.

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.