Cincinnati Open: Coco Gauff vs Liudmila Samsonova

Platform comparison

Market context

Coco Gauff’s Cincinnati Open second-round meeting with Liudmila Samsonova is priced with Gauff as the clear favourite, and the market’s 74% implied probability sits broadly in line with external match models showing her around the low-70s to high-90s depending on the source and timing[1][2]. The read-through is straightforward: Gauff is the higher seed, has a strong head-to-head edge over Samsonova, and entered the event with extra rest after a first-round bye[1][2].

For traders, the key catalyst is whether the match is actually completed within the settlement window, because the market can fall back to 50-50 if the contest is not played, ends level, or is delayed beyond seven days without a winner[1]. Recent draw and schedule coverage placed Samsonova as the opponent to the winner of the earlier first-round tie, and match listings kept the contest on the Cincinnati hard courts on 16 August, so the main dependency is simple tournament continuity rather than any broader circuit news[1][2]. In comparable WTA matches, markets of this size usually reflect both ranking gap and immediate scheduling advantage, with late withdrawals or weather delays doing most of the work on price rather than a sudden shift in player quality[2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Cincinnati Open: Coco Gauff vs Liudmila Samsonova plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

UK Frequently Asked Questions

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.