The Memphis Classic: Tatiana Prozorova vs Peyton Stearns

Platform comparison

Market context

Tatiana Prozorova’s meeting with Peyton Stearns in Memphis is priced very differently across markets: the prediction contract is at **0% YES**, while published tennis models and bookmaker-style lines point to Stearns as the clear favourite. Dimers has Stearns at **61.9%** against Prozorova’s 38.1%, with moneyline quotes of **Stearns -218** and **Prozorova +190**; another model at PredixSport is more bullish still, projecting Stearns at **75.95%**. TennisTemple’s match page also lists Stearns as the winner in the Memphis round-of-16 context, which is consistent with the broader consensus that the American should advance.[16][4][10][12]

That gap matters because historical pricing in women’s ITF and WTA-level matches often leaves more room for model disagreement than the market’s current 0% suggests. Prozorova and Stearns are listed on H2H pages as having no meaningful prior head-to-head separation, so traders are leaning more on ranking, recent form, and surface fit than on direct match history. PredixSport’s model cites Stearns’ higher ranking, stronger results against tougher opposition, and lower event fatigue as the main drivers of its edge, while still noting Prozorova’s serve-return numbers as the main route to a closer match.[8][4]

The key catalyst is whether the match was completed as scheduled in Memphis, because the contract only resolves to 50-50 if the contest is cancelled, tied, or delayed beyond seven days without a winner. Live scoring pages and highlight listings indicate the match was played in the 2026 Memphis event, with Stearns reportedly winning 6-1, 6-2, which would make any live or delayed-market pricing far less relevant than settlement mechanics now.[2][10][1] For traders, the main dependency is therefore not line movement but whether the exchange’s event classification follows the completed result or reverts to the contract’s no-result provision.[3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews The Memphis Classic: Tatiana Prozorova vs Peyton Stearns across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Best Prediction Markets, which mirrors the Polymarket order book at 0% fees.

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

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 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.