Roehampton: Peter Makk vs Marcus Walters

Platform comparison

Market context

Peter Makk and Marcus Walters are scheduled to meet in the qualifying draw at Roehampton, Great Britain, on 18 August 2026. The match forms part of the ATP qualifying competition preceding the main draw. Both players' current ranking positions and recent form on grass courts will determine baseline expectations; Roehampton's fast surface typically favours aggressive baseline play and serve-and-volley tactics. The 100% implied probability across major platforms suggests either one player is heavily favoured based on ranking differential, or the market reflects extremely high confidence in the match occurring as scheduled.

Qualifying matches at established grass-court venues rarely cancel outright, though weather delays are common in British summer conditions. Traders should monitor the ATP's official draw confirmation and any injury reports in the fortnight before the match. Recent Roehampton qualifying draws have proceeded without significant disruption, though the settlement window extends to 25 August—a seven-day buffer that accommodates rescheduling without triggering the 50-50 tie-break clause. On Kalshi, the binary structure means no fractional odds conversion; on Betfair and Smarkets, decimal odds would reflect the same near-certainty differently depending on commission structures (Kalshi charges 2% on winners, Betfair typically 5%). The absence of meaningful probability separation across platforms suggests limited arbitrage opportunity and reflects genuine consensus that one player will advance.

Methodology

This page compares Roehampton: Peter Makk vs Marcus Walters specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi 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). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.