Newport: Reese Brantmeier vs Elizabeth Mandlik

Platform comparison

Market context

The Newport women’s singles match between Reese Brantmeier and Elizabeth Mandlik, originally set for 9 July 2026 at 11:00 AM ET, has not yet been played, and the crowd-implied probability for Brantmeier advancing sits at 0% YES. This near-zero pricing reflects Elizabeth Mandlik’s dominant head-to-head record: she has won both prior encounters against Brantmeier, with a 100% win rate and a 4–2 advantage in sets won[1]. In tennis prediction markets, such lopsided H2H histories often anchor conditional token valuations, especially when one player holds a clear ranking edge—Mandlik is ranked 165, while Brantmeier sits at 528[8].

Traders should monitor the official WTA 125K Newport doubles schedule, as Brantmeier and Mandlik are both listed for a doubles match on 10 July 2026 at 15:00 UTC[2]. If either player withdraws due to fatigue or injury from that event, the singles outcome could shift dramatically. Recent tournament coverage confirms both athletes are actively competing in Newport, with live broadcasts and match statistics available via Tennis.com and Flashscore[3][5]. On-chain, this contract resolves using USDC on Polygon, where conditional tokens will settle to Brantmeier, Mandlik, or a 50–50 tie if the match is canceled or delayed beyond seven days without a winner.

No moralising is needed: the market simply prices Mandlik as the overwhelming favourite based on historical performance and current form. With the settlement window ending 16 July 2026, any delay in the singles match beyond the seven-day threshold would trigger the 50–50 resolution clause, a rare but mechanically precise outcome in Polymarket’s conditional token framework.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi UK, which mirrors the Polymarket order book directly.

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.