Roland Garros ATP: Alejandro Tabilo vs Valentin Vacherot

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Active sub-markets

Market context

Alejandro Tabilo of Chile faces Valentin Vacherot of France in the opening rounds of Roland Garros 2026, with the Chilean ranked considerably higher and favoured at 51% implied probability across major platforms. Tabilo, currently positioned in the ATP top 20, brings consistent clay-court form and recent tournament victories, whilst Vacherot operates at a lower ranking with limited Grand Slam experience. The scheduling for 5:00 AM ET on 28 May suggests an early-round fixture, likely first or second round, where seeding disparities typically correlate with match outcomes.

Historical precedent suggests Tabilo's ranking advantage should command higher odds than the current 51% split. When comparing decimal odds across platforms—Polymarket's fractional-to-decimal conversion versus Kalshi's American odds format—the marginal difference in implied probability reflects varying liquidity pools and fee structures rather than fundamental disagreement on the matchup. Betfair and Smarkets, with their commission-based models, often display tighter spreads once fees are factored in, whereas Polymarket's 2% maker fee can widen the gap between bid-ask prices on lower-volume markets.

Traders should monitor Tabilo's clay preparation tournaments in May and any injury announcements from either player in the week preceding the match. Recent form on European clay, particularly results from ATP 250 events in April and May, will provide concrete data on current fitness. The settlement window extends to 4 June 2026, allowing seven days beyond the scheduled date for completion; any postponement beyond that triggers a 50-50 resolution, a material risk factor that may explain why the market hasn't settled decisively toward the higher-ranked player.

Methodology

This page compares Roland Garros ATP: Alejandro Tabilo vs Valentin Vacherot specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Polymarket Alternative, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). Polymarket Alternative routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Alternative, 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.

Is this market available outside the US?

Polymarket Alternative is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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, Polymarket Alternative triggers a quick verification flow that finishes in minutes.