Roland Garros ATP: Matteo Arnaldi vs Raphael Collignon

Platform comparison

Active sub-markets

Market context

Matteo Arnaldi, the Italian ATP prospect ranked in the mid-80s, faces Raphael Collignon in the opening rounds of Roland Garros in late May 2026. Collignon, a French qualifier or lower-ranked challenger, represents a matchup where seeding and recent form will heavily determine the outcome. The 100% crowd-implied probability suggests near-certainty of match completion and a decisive result, with minimal expectation of cancellation, delay beyond the seven-day window, or retirement scenarios that would trigger the 50-50 settlement clause.

Historical precedent from Roland Garros early-round matches shows completion rates exceed 95% absent weather disruption or injury, though clay-court tournaments occasionally see rain delays. Arnaldi's trajectory through 2025 and into 2026 will establish whether he maintains upward momentum or stagnates; Collignon's ranking and recent ATP or Challenger results will clarify the relative disparity. The crowd's absolute confidence reflects either strong conviction in Arnaldi's superiority or high confidence in straightforward match execution rather than logistical failure.

Traders should monitor ATP rankings and head-to-head records as the May 30 date approaches, alongside Roland Garros draw confirmations and any injury bulletins from either player's camp. Weather forecasts for Paris in late May become material only if extended rain threatens the seven-day resolution window. The settlement window closes June 6 at 09:00 UTC, allowing a six-day buffer for completion; USDC settlement will execute once the match result is confirmed through official ATP records.

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.

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

Where can I trade this market with the lowest fees?

On BTC Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, BTC Prediction triggers a quick verification flow that finishes in 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.