TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 25, 8:39 PM EST
Kalshi
A professional tennis match between Maximo Zeitune and Nicolas Zanellato scheduled for June 23, 2026 at 10:30 AM ET in the Piracicaba ATP Challenger tournament. The event group contains 16 related markets covering match outcome, set winners, game totals, handicaps, and match completion status across Polymarket and Kalshi platforms.
This market refers to the tennis match between Maximo Zeitune and Nicolas Zanellato in the Piracicaba, originally scheduled for June 23, 2026 at 10:30AM ET. This market will resolve to 'Maximo Zeitune' if Maximo Zeitune advances against Nicolas Zanellato. This market will resolve to 'Nicolas Zanellato' if Nicolas Zanellato advances against Maximo Zeitune. 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 ATP Tour. A consensus of credible reporting may also be used.
The match must have a ball played to be considered official. If either player wins after play begins, their respective market resolves to Yes. If the match is cancelled before any ball is played due to injury, walkover, forfeiture, or other circumstances, the market resolves to a fair price per standard rules. Postponements or delays do not close the market; it remains open until the rescheduled match concludes, provided the rescheduling occurs within two weeks.
Polymarket and Kalshi can show different implied probabilities for the same event due to distinct user bases, liquidity pools, and market mechanics. Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Each platform attracts traders with different risk tolerances and information sets, leading to temporary price gaps. Polymarket's AMM-style pricing may respond differently to large trades than Kalshi's order-book model, and differences in fee structures or platform accessibility can shift where informed traders concentrate. These divergences typically narrow as arbitrageurs exploit the spread, but they persist when regional access, regulatory constraints, or user preferences keep the platforms partially segmented.