GP SAR La Princesse Lalla Meryem: Jil Teichmann vs Petra Marcinko

Platform comparison

Active sub-markets

Market context

Jil Teichmann and Petra Marcinko were due to meet in the Rabat draw, with the market tied to whether Marcinko advances or Teichmann does. The crowd price sits at 0% YES, which is not a view on match quality so much as a sign that the event has already been effectively priced out or considered settled elsewhere. On Kalshi, this kind of binary tennis contract is quoted directly in implied probability; on Polymarket and Betfair the same outcome is usually easier to compare through price-to-probability conversion, while Smarkets and Betfair also make the fee and commission drag more visible. For a head-to-head frame, Marcinko had already been reported as leading the matchup 1-0, and WTA reporting on the Rabat semi-final said she beat Teichmann 7-6(2), 6-3 to reach her first WTA final, which makes the zero price understandable if traders are looking at an already-completed result rather than a live contingency.

The main things to watch are whether the contract is on the original scheduled match or on a replayable settlement condition, and whether any official result posting, withdrawal notice, or schedule change alters how the book treats it. WTA’s own match report on 22 May said Marcinko closed out Teichmann in Rabat, while Tennis Temple also carried the same scoreline, so traders should check whether the market has already been anchored to that outcome or whether any delay, abandonment, or administrative correction could still matter inside the seven-day window. In practice, differences between Polymarket, Kalshi, Betfair and Smarkets here are less about sporting opinion than mechanics: Kalshi settles as a regulated US event contract, Betfair and Smarkets apply exchange commission and require exchange access, and all of them depend on KYC availability and local restrictions, which affects who can actually trade the same match outcome.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read GP SAR La Princesse Lalla Meryem: Jil Teichmann vs Petra Marcinko from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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.

Is this market available outside the US?

PolyGram 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.

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.