National Bank Open: Janice Tjen vs Liudmila Samsonova

Platform comparison

Market context

Janice Tjen’s meeting with Liudmila Samsonova is a straightforward WTA hard-court matchup, and the market’s 0% YES price is hard to reconcile with the prior head-to-head and projected numbers. Samsonova beat Tjen 2-0 on hard courts in Abu Dhabi in February 2026, and multiple match trackers list Samsonova as the higher-rated or favoured player in that pairing, with Tennis.com projecting her to win 62% to Tjen’s 38%[2][4][6]. On the basis of that record alone, a zero price looks more like an absence of informed flow than a true statement that Tjen cannot win[2][5].

For traders, the main driver is whether the National Bank Open schedule holds and whether the match is actually played before the settlement window closes. The contract resolves to 50-50 if the match is not completed within seven days of the scheduled date, so late rain delays, withdrawal news, or a revised order of play matter more than small pre-match price moves[market description]. In on-chain terms, these event markets settle in USDC, so the practical risk is not just who wins but whether the result is determined cleanly inside the window; broader BTC or ETH moves only matter indirectly through liquidity and trader risk appetite, not the tennis outcome itself. If line movement, withdrawals, or updated draw information appears, that is the key catalyst to watch rather than the wider crypto tape.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reads National Bank Open: Janice Tjen vs Liudmila Samsonova 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

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

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.

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.