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ATPCHALLENGER·Fri 9:00 AM ET

Guy Den Ouden vs Kimmer Coppejans

Kimmer Coppejans is the current favorite at $0.55 ask on Kalshi and $0.54 ask on Polymarket — an implied ≈55% chance. Prices as of 04:45 UTC on Jul 10, 2026, delayed about five minutes. Source markets: Kalshi · Polymarket. Resolution follows each venue's own market terms.

Curious how long a gap like this stays open? We measured it.

Guy Den Ouden

ATPCHALLENGER

Fri 9:00 AM ET

Kimmer Coppejans
46%48%50%52%8:38 PM9:47 PM10:53 PM11:47 PM12:43 AM47¢47¢

Moneyline

Guy Den Ouden
Kalshi47¢Polymarket47¢
Kimmer Coppejans1¢ gap
Kalshi55¢Polymarket54¢

Prices delayed about five minutes. Each venue's best ask per outcome; Kalshi asks are derived from its NO bids (ask = $1 minus the bid). Kalshi volume counts contracts, Polymarket volume is in dollars. Real-time prices and the full depth ladder are available via the WebSocket stream with an API key. Feed reference DINO-XKQZ7-9182.