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ATPCHALLENGER·Tue 11:30 AM ET
Aidan Mayo vs Guillaume Dalmasso
Aidan Mayo is the current favorite at $0.95 ask on Kalshi and $0.98 ask on Polymarket — an implied ≈97% chance. Prices as of 09:44 UTC on Jul 14, 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.
Aidan Mayo
ATPCHALLENGER
Tue 11:30 AM ET
Guillaume Dalmasso
KalshiPolymarket
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.