Swiss Open: Jerome Kym vs Dylan Dietrich

Platform comparison

Market context

The Swiss Open tennis tournament will host a first-round match between Jerome Kym and Dylan Dietrich on 14 July 2026. A YES share represents a bet that Kym advances past Dietrich; a NO share bets on Dietrich's progression. The current 45% probability assigned to Kym suggests the market views this as a competitive encounter, though slightly favouring Dietrich. Settlement occurs by 21 July 2026, with a 50-50 resolution if the match is cancelled, delayed beyond seven days without completion, or ends in a tie.

Kym and Dietrich occupy similar career trajectories on the professional circuit, both competing regularly at Challenger and ATP 250 level events. Historical data from comparable Swiss Open matchups between unseeded or lower-ranked players shows that home advantage—if either player holds Swiss residency—typically shifts probabilities by 3–5 percentage points. Recent ATP rankings and head-to-head records between these players will be critical reference points; if either has faced the other previously, that result often anchors initial market sentiment more heavily than raw ranking differentials.

Traders should monitor official tournament draw confirmations and any injury announcements in the week preceding 14 July. Weather conditions at the Swiss Open venue may affect court speed and playing style matchups. Withdrawal announcements from either player, or late changes to the tournament schedule, would trigger immediate market repricing. Confirmation of the exact court assignment and match time—the original 4:00 AM ET slot suggests an early-round scheduling—may also influence player fatigue assessments closer to the event date.

Methodology

We track Swiss Open: Jerome Kym vs Dylan Dietrich across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Market UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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 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.