Granby: Liam Draxl vs James Kent Trotter

Platform comparison

Market context

Liam Draxl faces James Kent Trotter in the Granby ATP Challenger match originally set for 14 July 2026, with Polymarket pricing this contract at a 100% YES probability for Draxl advancing. On-chain, the market trades in USDC on Polygon, locking conditional tokens that resolve to Draxl if he wins, Trotter if he advances, or a 50-50 split if the match is cancelled, tied, or delayed beyond seven days without a winner.

Historical precedents in ATP Challenger events show that when initial odds heavily favour one player—here, Draxl at 1.30 versus Trotter at 3.14—the market often stabilises near certainty unless a withdrawal occurs post-start. Kalshi’s parallel market confirms that if a player forfeits after play begins, they resolve to no, reinforcing how early odds gaps translate into near-total pricing confidence on-chain [1][2].

Traders should monitor the official Granby tournament schedule for any delay notices or withdrawal announcements, as these are the sole catalysts that could shift the 100% price. Tennis Tonic’s preview explicitly picks Draxl to win in two sets, aligning with the current pricing, but any change in player status before the ball is first struck remains the critical dependency for this contract [2].

Sources: 1 · 2

Methodology

This page reviews Granby: Liam Draxl vs James Kent Trotter across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.