Bad Homburg Open: Alexandra Eala vs Elise Mertens

Platform comparison

Active sub-markets

Market context

Alexandra Eala’s meeting with Elise Mertens at Bad Homburg is being read through form rather than ranking alone, because Eala has arrived on grass with clear momentum. She has won eight of her last ten matches on the surface, collected a Birmingham title, and beat Elena Rybakina and Elina Svitolina in Berlin before reaching the semi-finals, which is the strongest recent grass résumé in the market data[1][2].

The market’s 100% implied probability is extreme, but the matchup itself is not one-sided on prior evidence: TennisTemple lists Mertens as leading their head-to-head 2-0, which is the main historical counterweight to Eala’s current grass run[2]. That kind of split is typical of tennis markets where a player’s short-term surface form has improved sharply, yet the opponent still holds the cleaner direct record and a more established tour baseline[2].

The key traders’ watchpoint is whether the contest is actually completed within the settlement window, because the market only resolves to a named winner if someone advances and flips to 50-50 if the match is cancelled, tied, or delayed beyond seven days without a winner[1]. Reuters-style match previews were not surfaced in the available results, so the most relevant near-term catalysts are schedule updates, any late withdrawals, and whether the first-round slot is played as planned rather than pushed by weather or order-of-play changes[1][3][6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Sport Prediction, 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?

Sport Prediction is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 it cost to trade on Sport Prediction?

Zero. Sport Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.