Roland Garros ATP: Alejandro Tabilo vs Kamil Majchrzak

Platform comparison

Active sub-markets

Market context

Alejandro Tabilo, the Chilean world No. 20, faces Polish qualifier Kamil Majchrzak in the opening round of Roland Garros ATP in May 2026. The match carries a 100% implied probability on current odds, suggesting near-certainty in Tabilo's advancement. This extreme confidence reflects Tabilo's ranking advantage and recent form, though the settlement window extends to 31 May, allowing seven days beyond the scheduled 24 May date for completion before triggering the 50-50 tie resolution.

Historical precedent shows that clay-court specialists and seeded players at Roland Garros rarely face upset losses to qualifiers in opening rounds. Majchrzak, despite his ATP ranking fluctuations, enters as an unseeded qualifier without recent Grand Slam main-draw success. Comparable first-round matchups between top-20 seeds and qualifiers at Roland Garros settle with the higher-ranked player advancing roughly 85–90% of the time, yet the 100% probability here suggests market participants are pricing in additional confidence beyond historical baseline rates.

Traders monitoring this market should track official Roland Garros draw confirmations and any late withdrawals or injury announcements affecting either player. Kalshi and Betfair typically offer decimal odds formats (1.01 or lower for this probability), whilst Polymarket displays implied percentages directly. The tight odds mean fee structures become material—Kalshi's 2% taker fee and Polymarket's variable fee schedule will compress potential returns significantly. Any schedule delays beyond 24 May warrant close attention, as the seven-day buffer before 50-50 resolution creates a narrow window where incomplete matches could shift market outcomes unexpectedly.

Methodology

This page compares Roland Garros ATP: Alejandro Tabilo vs Kamil Majchrzak 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

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 it cost to trade on Polymarket Alternative?

Zero. Polymarket Alternative routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.