Wimbledon ATP: Kamil Majchrzak vs Alejandro Tabilo

Platform comparison

Market context

The first-round Wimbledon ATP clash between Poland’s Kamil Majchrzak and Chile’s left-handed Alejandro Tabilo is set for 30 June 2026, with Tabilo heavily favoured to advance on grass. Prediction markets currently show a 100% YES probability that Majchrzak will win, a stark divergence from sportsbook lines and analyst consensus, which both point to Tabilo as the likely victor.

Historical precedents in Wimbledon first-round matches involving defensive specialists against aggressive left-handers on grass often see the latter prevail, as seen in Tabilo’s 2024 and 2025 grass-court performances. In such cases, the 100% market probability stands as an outlier, suggesting either a mispricing or an unconfirmed external factor, such as a withdrawal or injury not yet reflected in public data.

Traders should monitor official ATP announcements and live score feeds for any match cancellations, delays, or player status changes. Recent coverage from Tennis.com confirms the match is scheduled but notes no confirmed withdrawals, leaving the 100% probability unexplained by current public information [2]. Any shift in player availability or match timing could rapidly alter the implied odds across platforms.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

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.