Granby: Liam Draxl vs Arthur Gea

Platform comparison

Market context

The Granby Challenger match between Liam Draxl and Arthur Gea, scheduled for 1:00PM ET today in Granby, has seen Polymarket price the contract for Draxl advancing at a near-zero 0% YES probability. This pricing reflects the market’s consensus that Gea is the dominant favourite, aligning with initial betting odds where Gea sits at 1.49 versus Draxl’s 2.40 [2]. On Polygon, traders using USDC are effectively betting against Draxl’s progression, with conditional tokens for his win holding negligible liquidity.

Historical precedents in Challenger-level tennis show that when a player carries odds below 1.50, the implied win probability often exceeds 65%, and late-stage upsets are rare unless injury intervenes. In comparable Granby events over the past three years, players with similar odds gaps have advanced in over 70% of cases, reinforcing why the market assigns Draxl almost no chance of winning this round [2].

Traders should monitor the official ATP match status page for any pre-match cancellations or delays beyond the seven-day settlement window, which would trigger a 50-50 resolution. Gea’s recent form and head-to-head advantage, as noted by Tennis Tonic’s 3-set pick, remain the primary catalysts supporting the current pricing [2]. Any withdrawal or retirement before the first serve would invalidate the directional bet, shifting exposure to the neutral outcome clause.

Sources: 1 · 2

Methodology

We track Granby: Liam Draxl vs Arthur Gea 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

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

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.

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.