Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Set 1 O/U 8.5 | 100% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Set Handicap +/-1.5 | 100% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Set 2 Winner | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Set 1 Winner | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Total Sets: O/U 2.5 | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Match O/U 21.5 | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Set 2 O/U 8.5 | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Set 1 O/U 9.5 | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Match O/U 22.5 | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Set 2 O/U 9.5 | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Set 1 O/U 10.5 | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Set 2 O/U 10.5 | 0% |
| Swedish Open: Nicolai Budkov Kjaer vs Andrea Pellegrino Match O/U 23.5 | 0% |
Market context
The Swedish Open tennis tournament will host a first-round match between Danish player Nicolai Budkov Kjaer and Italian competitor Andrea Pellegrino on 13 July 2026. The encounter is scheduled for 4:00 AM ET, reflecting the early scheduling typical of lower-seeded matches at ATP 250 events. Settlement occurs on 20 July 2026 at 08:00 UTC, allowing a seven-day window for match completion or cancellation protocols to trigger the 50-50 resolution clause.
Current crowd-implied probability sits at 0% YES, suggesting market participants are either heavily favouring Pellegrino or treating the match outcome as genuinely uncertain given limited historical data on both players' recent form. Budkov Kjaer, ranked outside the top 200 for much of 2025, has shown inconsistent results on clay surfaces—the Swedish Open's primary court type. Pellegrino's ATP ranking and recent tournament appearances would provide clearer baseline expectations; comparable early-round matches at Bastad typically see the higher-ranked player favoured by 60–75% implied probability unless injury or form concerns surface.
Traders should monitor ATP official announcements regarding player withdrawals or schedule adjustments, particularly given the early morning slot which occasionally triggers postponements. Court conditions at Bastad clay courts and weather forecasts in the week preceding 13 July will influence match dynamics. Any late injury reports from either player's social media or ATP injury tracker should be tracked closely, as these often precede formal cancellations. The settlement window's seven-day buffer means delays beyond 20 July would automatically resolve the market 50-50, creating tail-risk exposure for positions held near the deadline.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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