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Tennis·Tue 8:00 PM ET

Hayden Jones vs Matthew Dellavedova

Matthew Dellavedova is the current favorite at $0.83 ask on Kalshi and $0.82 ask on Polymarket — an implied ≈83% chance. Prices as of 01:39 UTC on Jul 22, 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.

Hayden Jones

Tue 8:00 PM ET

Matthew Dellavedova
16%18%22%24%12:20 PM12:41 PM1:04 PM1:24 PM1:46 PM20¢21¢

Moneyline

Hayden Jones1¢ gap
Kalshi20¢Polymarket21¢
Matthew Dellavedova1¢ gap
Kalshi83¢Polymarket82¢

How this settles

Spread
Read each venue's rules

Kalshi

The following market refers to the Dellavedova vs Jones professional tennis match in the 2026 M15 Brisbane Round of 32 after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), all markets will resolve to $0.50. If a player withdraws or forfeits after a match has started, that player will resolve to No. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks). Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.

Polymarket

This market refers to the tennis match between Matthew Dellavedova and Hayden Jones in the ITF Men Brisbane, originally scheduled for July 21, 2026 at 8:00PM ET. This market will resolve to 'Matthew Dellavedova' if Matthew Dellavedova advances against Hayden Jones. This market will resolve to 'Hayden Jones' if Hayden Jones advances against Matthew Dellavedova. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the International Tennis Federation (ITF). A consensus of credible reporting may also be used.

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. How the market matching API works · Real-time WebSocket API docs. Feed reference DINO-XKQZ7-9182.