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ATPCHALLENGER·Mon 4:00 PM ET

August Holmgren vs Yosuke Watanuki

August Holmgren is the current favorite at $0.51 ask on Kalshi and $0.51 ask on Polymarket — an implied ≈51% chance. Prices as of 14:43 UTC on Jul 13, 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.

August Holmgren

ATPCHALLENGER

Mon 4:00 PM ET

Yosuke Watanuki
55%60%2:58 AM4:00 AM5:18 AM6:38 AM7:58 AM51¢51¢

Moneyline

August Holmgren
Kalshi51¢Polymarket51¢
Yosuke Watanuki2¢ gap
Kalshi51¢Polymarket49¢

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.