Indiana Fever vs. Phoenix Mercury

Platform comparison

Market context

The underlying event is a WNBA matchup between the Indiana Fever and Phoenix Mercury scheduled for 9 July at 10:00PM ET, where the market resolves to the winner including any overtime. Historical data from their recent two-game set shows a clear split: Indiana won the first clash 86-77 on 22 June, with Caitlin Clark scoring 24 points, while Phoenix reversed the result 111-109 on 24 June, led by Kahleah Copper’s 28 points[3][8]. This volatility frames the current 51% YES probability for Indiana as a near-even coin toss rather than a decisive edge, mirroring how back-to-back games often produce alternating outcomes in tight WNBA contests[1].

A programmatic trader should monitor the back-to-back fatigue factor for Indiana, who played Wednesday night before this Thursday fixture, and watch for any late roster announcements regarding key players like Clark or Mitchell[1]. The total points line sits around 184.5, suggesting a high-scoring affair where defensive lapses could swing the result, so conditional orders on the over might offer better value than a straight win bet[1][10]. Recent analysis notes Indiana’s offensive edge despite the fatigue, yet Phoenix’s ability to score in bursts remains a critical dependency for any algorithmic strategy[1]. Traders must also verify the game status against the settlement window ending 2026-07-10T02:00:00Z to avoid open-market risks if postponement occurs.

The market’s 50-50 resolution clause for cancellation adds a layer of complexity for conditional order bots, requiring explicit checks for game cancellation before executing trades. Given the split in their last two meetings, the 51% probability reflects a marginal preference for Indiana’s offensive strength, but the back-to-back schedule introduces significant uncertainty that a robust trading bot must weigh heavily[1]. No moralising is needed; the facts show a volatile matchup where programmatic approaches should prioritise fatigue metrics and real-time roster updates over static win probabilities.

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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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.

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.

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.