Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) 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% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set 1 Winner | 100% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Total Sets: O/U 2.5 | 100% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Match O/U 21.5 | 100% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set 2 O/U 8.5 | 100% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Match O/U 22.5 | 100% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Match O/U 23.5 | 100% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya | 0% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set 2 Winner | 0% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set 1 O/U 8.5 | 0% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set Handicap +/-1.5 | 0% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set 1 O/U 9.5 | 0% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set 2 O/U 9.5 | 0% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set Handicap +/-1.5 | 0% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set 1 O/U 10.5 | 0% |
| Mubadala Citi DC Open: Janice Tjen vs Anna Kalinskaya Set 2 O/U 10.5 | 0% |
Market context
Polymarket is pricing this **Janice Tjen vs Anna Kalinskaya** contract at **0% YES** right now, which on the platform means traders are assigning no visible probability to Tjen advancing on the underlying WTA match. Because the market settles through USDC on Polygon via conditional tokens, the key question is not who is better on paper but whether the match is actually completed and a winner is officially recorded before the settlement deadline; if it is cancelled, left unfinished, or delayed beyond seven days without a winner, the contract resolves 50-50 rather than to either player.
The comparison for this price is straightforward: Anna Kalinskaya is the higher-ranked player, listed around WTA No. 20 versus Tjen at No. 37, and the pair have no prior head-to-head history in the available match data. Kalinskaya also comes in with the stronger recent tour record in the head-to-head/statistical snapshots, while Tjen’s profile is more volatile and less established at this level. That makes a zero-centred price unusual unless traders think the draw, timing, or market data are stale rather than genuinely reflective of the matchup.[1][5][16]
The main catalysts are mundane but decisive: official order-of-play updates from Washington, any late withdrawal or retirement, and whether the contest is played to a completed result before the seven-day cutoff. Current listings place the match on the Mubadala Citi DC Open hard courts in Washington, with live scoreboards already tracking it, which suggests the most relevant risk is not abstract form but execution — whether the scheduled session starts on time, whether weather or court scheduling pushes it back, and whether the winner is decided cleanly within the event window.[1][8][15][17]
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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 Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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.
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