Roehampton: Peter Makk vs Marcus Walters

Platform comparison

Market context

Peter Makk faces Marcus Walters in qualifying at Roehampton in August 2026, with the market currently pricing Makk at 100% implied probability. The match sits within the qualifying draw for what is traditionally a grass-court warm-up event ahead of major summer tournaments. Settlement closes 25 August 2026, allowing a seven-day window beyond the scheduled 18 August date before the market defaults to a 50-50 split if the match remains unresolved.

Roehampton qualifying draws typically feature a mix of fringe tour players and promising prospects seeking ranking points. Historical precedent suggests that when one player enters as a clear favourite in qualifying, the consensus often reflects recent form disparities or seeding advantages rather than fundamental skill gaps. A 100% reading on Makk warrants scrutiny—qualifying matches frequently produce upsets, particularly on grass where serve-and-volley specialists can exploit rhythm-dependent opponents. The current probability suggests either Makk carries significant recent momentum or Walters faces documented fitness concerns heading into the event.

Traders should monitor both players' activity in the weeks preceding 18 August, particularly any late withdrawals or injury announcements that might trigger a rescheduling beyond the seven-day threshold. Grass-court preparation tournaments often see last-minute schedule adjustments due to weather or player rotation decisions. Recent ATP Challenger results and qualifying performance at comparable events will signal whether the 100% reading reflects genuine form separation or market overconfidence in an incomplete information set.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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.

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.

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.