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ATPCHALLENGER·Wed 11:30 AM ET

Justin Boulais vs Yuta Shimizu

Yuta Shimizu is the current favorite at $0.59 ask on Kalshi and $0.64 ask on Polymarket — an implied ≈61% chance. Prices as of 06:54 UTC on Jul 15, 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.

Justin Boulais

ATPCHALLENGER

Wed 11:30 AM ET

Yuta Shimizu
40%44%46%11:43 PM12:15 AM12:38 AM1:09 AM1:36 AM43¢42¢

Moneyline

Justin Boulais1¢ gap
Kalshi43¢Polymarket42¢
Yuta Shimizu5¢ gap
Kalshi59¢Polymarket64¢

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.