Bad Homburg Open: Alexandra Eala vs Elise Mertens

Platform comparison

Active sub-markets

Market context

Alexandra Eala and Elise Mertens are due to meet at the Bad Homburg Open, a WTA 500 grass-court event in Germany that runs from 21–27 June 2026 and is part of the final build-up to Wimbledon.[1][4] For a prediction market sitting at 100% YES, the key practical point is that the contract is about a completed tennis progression outcome: if the match is played and one player advances, that determines settlement; if it is abandoned, tied, or delayed beyond the market’s seven-day window without a winner, it falls back to 50-50 by the market rules.

The probability should be read against a tournament profile that is compact and schedule-sensitive. Bad Homburg is a short grass event with a 28-player singles draw, so late withdrawals, weather interruptions, or order-of-play reshuffles can matter more than in longer events.[1][8] Comparable WTA grass warm-up tournaments often produce abrupt market moves when a player is confirmed fit, when a walkover is announced, or when the day’s slate is pushed back; BBC and WTA schedule pages show the event is actively being tracked day by day.[2][8]

From a regulatory and access angle, the market’s German venue sits within a jurisdiction shaped by the GlüStV framework for gambling oversight, while US-linked trading venues can still face CFTC scrutiny if their products are deemed derivatives or event contracts. For users, “no-KYC up to $1,500” generally means small positions may be accessible without full identity verification, but that does not remove platform checks, withdrawal limits, or jurisdictional restrictions, and it is especially relevant on a single-match market where liquidity can concentrate quickly around lineup news.

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 Polymarket KYC UK, 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

Where can I trade this market with the lowest fees?

On Polymarket KYC UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 Polymarket KYC UK?

Zero. Polymarket KYC UK 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.

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.