Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Set 1 O/U 8.5 | 100% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Set 2 O/U 8.5 | 100% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Set Handicap +/-1.5 | 100% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Set 2 O/U 9.5 | 100% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova | 0% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Set 1 Winner | 0% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Set 2 Winner | 0% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Match O/U 21.5 | 0% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Total Sets: O/U 2.5 | 0% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Set 1 O/U 9.5 | 0% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Match O/U 22.5 | 0% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Set 1 O/U 10.5 | 0% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Match O/U 23.5 | 0% |
| ITF Koksijde: Tatiana Pieri vs Barbora Palicova Set 2 O/U 10.5 | 0% |
Market context
Tatiana Pieri and Barbora Palicova were due to meet in the W75 Koksijde quarter-final, but the match is already recorded as completed on live tennis trackers, with Palicova leading 6-3, 6-4[1][2]. That matters for a prediction market that still shows **0% YES** for Pieri: if the result is accepted as final, the contract should resolve to Palicova rather than drift towards a delayed or void outcome[1][16].
The broader read is consistent with pre-match form and ranking context. Palicova was the higher-ranked player on entry, around WTA 278 to Pieri’s 421, and the pair had no prior head-to-head record, so pricing is better read through season-level performance than historical matchup patterns[1][3]. Aggregated grass-court and hard-court data also pointed to a modest Palicova edge in recent service and return numbers, while the market’s 0% YES on Pieri implies either a near-certain live completion or that the venue data had already shifted decisively away from Pieri before settlement[5][6].
For platform comparison, Polymarket and Kalshi express this as an implied probability, while Betfair and Smarkets show decimal odds that embed commission and, in Betfair’s case, exchange liquidity conditions; that makes a seemingly identical “favourite” read differently once fees are stripped out. KYC access also diverges: regulated books and exchanges typically require full identity checks, whereas prediction markets can be lighter at the point of entry depending on jurisdiction, which affects who can trade this Koksijde line and how quickly the price reacts to late score updates or official match confirmation[11][16][19].
Methodology
This page compares ITF Koksijde: Tatiana Pieri vs Barbora Palicova specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Alternative, which mirrors the Polymarket order book at 0% fees.
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
- What does Polymarket cost vs Kalshi?
- Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
- Is Betfair a Polymarket alternative?
- Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.
- What about Smarkets as an alternative?
- Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Polymarket Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Polymarket Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.
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