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ITF·Tue 10:30 AM ET

Gian Marco Ortenzi vs Marcello Serafini

Gian Marco Ortenzi is the current favorite at $0.55 ask on Kalshi and $0.54 ask on Polymarket — an implied ≈55% chance. Prices as of 09:45 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.

Gian Marco Ortenzi

ITF

Tue 10:30 AM ET

Marcello Serafini
52%56%12:20 AM12:40 AM1:08 AM1:37 AM1:57 AM55¢54¢

Moneyline

Gian Marco Ortenzi1¢ gap
Kalshi55¢Polymarket54¢
Marcello Serafini1¢ gap
Kalshi49¢Polymarket48¢

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.