National Bank Open: Learner Tien vs Thiago Agustin Tirante

Platform comparison

Market context

Polymarket is pricing Learner Tien at **69% YES**, which is above both the broader tennis preview consensus and the tournament’s own projected-winner read, so the contract is leaning towards the seeded player rather than a toss-up. The underlying event is a National Bank Open men’s singles match in Montréal, with Tien listed as the No. 12 seed and Tirante unseeded; the match is a round-of-16/round-4 fixture on outdoor hard courts, and the market resolves on the first completed result or reverts to 50-50 if the match is not played or is pushed beyond the seven-day window without a winner.[1][2][8][16]

For a Polymarket user, the main historical framing is that this looks like a standard favourite-vs-underdog contract rather than a binary on-name recognition. Preview models and event listings have Tien around the low-to-mid 70s in win probability, while Tirante’s path has been shorter and less proven at this level; both players have no prior tour-level head-to-head, which usually leaves the price anchored more to ranking, surface record, and recent form than matchup history.[2][4][6][12][14] Tien’s run through Gaël Monfils and Tommy Paul has reinforced that view, whereas Tirante has reached this stage with fewer comparable wins in the draw.[11][14]

The near-term catalysts are simple: official start order, court assignment, and any late schedule changes in Montréal. Independent listings currently point to the match on Centre Court at 17:40 UTC / 1:40 p.m. ET on 9 August, but if weather, backlog, or withdrawals disrupt the slot, that matters for a market with a seven-day settlement clock and a 50-50 fallback for non-played cases.[8][13][16] Because Polymarket settles via USDC on Polygon through conditional tokens, traders should watch for a clean start versus a walkover, retirement, or postponement, since those mechanics can matter as much as the on-court result for final resolution.[16]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Learner Tien vs Thiago Agustin Tirante across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.