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% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set 2 O/U 8.5 | 100% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set 1 O/U 8.5 | 100% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Match O/U 21.5 | 100% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set 2 O/U 9.5 | 100% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set 1 O/U 9.5 | 100% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set Handicap +/-1.5 | 100% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set 2 O/U 10.5 | 100% |
| National Bank Open: Tereza Valentova vs Taylor Townsend | 0% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set 2 Winner | 0% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set 1 Winner | 0% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Total Sets: O/U 2.5 | 0% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set Handicap +/-1.5 | 0% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Match O/U 22.5 | 0% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Set 1 O/U 10.5 | 0% |
| National Bank Open: Tereza Valentova vs Taylor Townsend Match O/U 23.5 | 0% |
Market context
Tereza Valentova’s first-round meeting with Taylor Townsend at the National Bank Open is priced as a live but not dominant contest, with the crowd implying a 36% chance on the Townsend side and a modest lean towards Valentova from tennis pricing models. The shape of the market is consistent with a young, higher-ranked player facing a more established opponent whose route to the next round depends on whether she can use her left-handed patterns and doubles-honed net play to blunt Valentova’s baseline pace. No head-to-head record is listed in the available previews, so traders are leaning on ranking, surface fit and recent form rather than direct matchup history.[1][2][3][9]
Comparable cases in early-round WTA hard-court matches tend to move sharply once the draw is confirmed and the first set begins, because live probability is then driven more by serve hold rates, break-point conversion and any visible fitness or scheduling issues than by pre-match narrative. Valentova’s recent hard-court results appear stronger than Townsend’s overall run of results in the last 12 months, while Townsend has still produced enough top-level wins to justify a non-trivial upset price. That combination usually leaves a market like this sensitive to even small information updates, which matters for a USDC-settled contract that only pays the binary outcome or defaults to 50-50 if the match is not completed within the window.[2][3][5]
The main catalysts to watch are straightforward: whether the match is played on schedule, whether either player withdraws or retires, and whether tournament scheduling slips beyond the seven-day threshold that triggers the market’s tie treatment. Current listings place the match on 3 August in Toronto, and the contract resolves only on advancement, so any walkover, abandonment or cancellation changes the payoff mechanics more than the on-court scoreline does. For broader crypto context, traders should also watch BTC and ETH spot volatility and funding rates if they are treating this as part of a risk basket, since short-dated event markets often see flow rotate when leverage resets or large wallets move capital into stables ahead of settlement.
Methodology
This page reads National Bank Open: Tereza Valentova vs Taylor Townsend on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- 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.
- Which crypto markets exist on Polymarket?
- Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.
- 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.
Trade National Bank Open: Tereza Valentova vs Taylor Townsend on BTC Prediction
Live order book, 0% fees, USDC settlement in seconds.
Open live market →