National Bank Open: Liudmila Samsonova vs Barbora Krejcikova

Platform comparison

Market context

Liudmila Samsonova and Barbora Krejčíková are the players to watch in this National Bank Open second-round match, and the live price of 100% YES is far above the wider market consensus. Tennis.com has Samsonova on 32% and Krejčíková on 68% projected winner probability, while other pre-match models and books cluster in roughly the same area, with Krejčíková around 61-66% and Samsonova around 34-39%.[1][11][13] That matters for power-user workflows because a 100% crowd-implied line usually leaves no statistical cushion: if you are routing signals through a bot or conditional order stack, the market is already treating Krejčíková as the likely advancee, so the only tradable edge tends to come from timing, cancellation risk, or stale pricing rather than direction.

The main comparable case is how tightly this matchup has been framed despite the favourite bias. TheStatsZone notes Samsonova leads the head-to-head 3-1 and 2-0 on hard courts, but still describes Krejčíková as the commanding favourite, which is a useful pattern for reading tennis markets where historical match-up comfort can coexist with a stronger current rating signal.[3] TennisMajors also lists the head-to-head since 2022 as 0:0, underlining that recent direct form is not especially informative here and that traders are effectively leaning on current level, surface fit, and tournament context instead.[14]

For programmatic trading, the key triggers are straightforward: confirmation the match actually starts, any schedule slip within the 7-day resolution window, and whether either player is withdrawn or the match is abandoned. Tennis.com lists the contest as Round 2 on Court 1 with play “coming up”, while betting feeds show it as not started, so the immediate task is to monitor official draw updates and live score endpoints rather than pre-match narrative.[1][9][15] If the match is delayed beyond 7 days from the scheduled date without a winner, the market resolves 50-50, so bots should treat postponement logic as a separate branch from winner logic and avoid assuming a default advance on inactivity.[17]

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 Polymarket Bot UK, which mirrors the Polymarket order book directly.

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.

UK Frequently Asked Questions

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 Polymarket Bot UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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