Warsaw: Laura Samson vs Mona Barthel

Platform comparison

Market context

Laura Samson and Mona Barthel have been listed for a Warsaw women’s singles match, but the market’s 0% YES price implies the contest is not expected to be live in its original form and is instead being treated as effectively dead until there is a clear played result. The match was originally scheduled for 3 August, and by market rules any cancellation, no-contest outcome, tie, or delay beyond seven days without a winner pushes resolution to 50-50 rather than a straight player win. [3][7]

The clearest comparable frame is the pair’s only prior meeting: Barthel beat Samson in straight sets in 2024, 7-5, 6-3 on hard court, so the historical edge is with Barthel, even though that result is now two seasons old. Live tennis databases also show Barthel leading the head-to-head 1-0 overall and 1-0 on hard, which is the main reason a pure form-based price would usually sit away from zero if the match were still scheduled to be played normally. [1][4][5]

For traders, the immediate catalysts are operational rather than stylistic: whether Warsaw’s order of play still includes this tie, whether either player is moved, withdrawn, or replaced, and whether the event issues an official walkover, retirement, or postponement notice. Tournament listings still show the fixture on the 32nd-round slate, but several trackers already flag the match status as upcoming or live-linked, so the key watch is the organiser’s final scheduling update and any late withdrawals before the settlement window closes. [2][7][11]

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 Prediction Today, which mirrors the Polymarket order book directly.

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

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.