TOTAL VOLUME:

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24H VOL:

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OPEN INTEREST:

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400,720

Markets across

30,097

events

MATCHED EVENTS:

2,633

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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HSBC Championships: Jenson Brooksby vs Martin Damm
kalshi
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm

Volume:
$268,046

HSBC Championships: Jenson Brooksby vs Martin Damm

 - Polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm - Polymarket

1W

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Neutral

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Vol.

·

Resolved Jun 16, 2026

Closed: Jun 23, 4:00 AM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$256,288
N/A
N/A
N/A
Settled
Yes
kalshi

Over 23.5 games

View
100%
Yes 100¢No 0¢
100¢
N/A
$1,526
N/A
N/A
$1,335
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Match O/U 22.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$293
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Set 1 O/U 9.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$530
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Total Sets: O/U 2.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$375
N/A
N/A
N/A
Settled
Yes
kalshi

Over 18.5 games

View
100%
Yes 100¢No 0¢
100¢
N/A
$360
N/A
N/A
$360
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Match O/U 21.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$20
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Match O/U 23.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$298
N/A
N/A
N/A
Settled
Yes
kalshi

Over 28.5 games

View
0%
Yes 0¢No 100¢
100¢
N/A
$3,659
N/A
N/A
$3,449
Settled
No
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Set 1 Winner

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$266
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Set 2 O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Set 1 O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Set Handicap +/-1.5

View
0%
Yes 0¢No 100¢
—
N/A
$4,002
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Set 1 O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
$293
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Set 2 Winner

View
0%
Yes 0¢No 100¢
—
N/A
$117
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Set 2 O/U 9.5

View
0%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

HSBC Championships: Jenson Brooksby vs Martin Damm Set 2 O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

View
100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 18

Description

This event group covers the professional tennis match between Jenson Brooksby and Martin Damm at the 2026 HSBC Championships (ATP London), scheduled for June 16, 2026 at 4:00 AM ET. Markets span match winner, set winners, game-count totals across multiple thresholds, and set handicap outcomes.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

Kalshi and Polymarket share identical resolution sources (ATP Tour official statistics), edge-case handling (50-50 for incomplete/canceled matches), and game-counting methodology (tiebreaks = 1 game). No material divergence detected across 30 markets.Primary resolution logic: Official ATP Tour statistics and match records (atptour.com); consensus of credible reporting if official statistics unavailable within 2 hours of match conclusion.

Core resolution logic:

  • Match winner resolves to the player who advances; if match is canceled, ends in walkover, or delayed beyond 7 days without completion, resolves 50-50.
  • Match completion resolves Yes only if all games and sets required to determine a winner under ATP rules are played through normal play; any forfeit, retirement, or default resolves No.
  • Game-count markets (O/U thresholds) resolve Over/Under based on total games completed in specified set(s) or full match; tiebreaks count as one game each.
  • Set-winner markets resolve to the player winning that set if the set is completed; if set is not reached or not completed, resolves 50-50.
  • Set-handicap markets resolve based on the final completed score; if match is incomplete, resolves 50-50.
  • Total-sets markets resolve Over if 3+ sets are completed, Under if fewer; incomplete matches resolve 50-50.
  • If match is canceled before play begins or delayed beyond 7 days without commencement, all markets resolve 50-50 or No (depending on market type).

Edge cases & clarifications:

  • Incomplete Match / Retirement: If match begins but is not completed due to retirement, default, or disqualification: match-winner and set-handicap markets resolve 50-50; set-winner markets resolve 50-50 if the set is not completed; game-count and total-sets markets resolve 50-50; match-completion market resolves No.
  • Walkover / Pre-Match Withdrawal: If one player withdraws before the match starts (walkover), all markets resolve 50-50 or No (match-completion resolves No; others resolve 50-50).
  • Cancellation or Delay Beyond 7 Days: If match is canceled or delayed beyond 7 days from June 16, 2026 without play beginning or without a winner determined, all markets resolve 50-50 or No depending on market type.
  • Tiebreak Counting: All tiebreaks (including Champions/Super tiebreaks) count as one game toward game-count totals; first-set and set-2 tiebreaks each count as 1 game.
  • Set Not Reached: If match ends before a specified set is reached (e.g., match ends 2-0 before Set 2 begins), Set 2 markets resolve 50-50; Total Sets O/U 2.5 resolves Under if match ends in straight sets.
Timing: Resolution occurs upon official ATP Tour publication of final match statistics. If official statistics are not published within 2 hours of match conclusion, credible reporting consensus may be used. Markets resolve immediately upon match completion or upon determination that match will not be completed (cancellation, delay beyond 7 days, walkover).Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

This market refers to the tennis match between Jenson Brooksby and Martin Damm in the HSBC Championships, originally scheduled for June 16, 2026 at 4:00AM ET. This market will resolve to 'Jenson Brooksby' if Jenson Brooksby advances against Martin Damm. This market will resolve to 'Martin Damm' if Martin Damm advances against Jenson Brooksby. 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.

Kalshi

Resolution is based on the total number of completed games across the full match. The match must begin with a ball being played to be considered as occurring; if cancelled before play starts due to injury, walkover, forfeiture, or other reasons, the market resolves to fair price. If the match is postponed or delayed, the market remains open and closes after the rescheduled match concludes within two weeks. If a player retires, markets that can be unconditionally settled based on completed play resolve accordingly; those that cannot are settled at fair market price at the Exchange's discretion.

Frequently asked questions

Prediction markets like Polymarket and Kalshi operate on peer-to-peer trading, where odds reflect what actual traders are willing to buy and sell at any moment. Traditional sportsbooks, by contrast, set odds to balance their book and manage risk. Prediction market prices often incorporate real-time information and can move faster than sportsbook lines, especially as new developments emerge. However, sportsbooks may offer tighter spreads and faster payouts. For this market, comparing the implied probabilities here to major sportsbook lines can reveal where sharp money is positioning itself.

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 different trader demographics, liquidity pools, and fee structures, all of which influence pricing. Polymarket and Kalshi may also have different market mechanics—for instance, one platform might offer total games contracts while the other focuses on match winner outcomes. Timing differences in order flow, regional user bases, and platform-specific incentives can create temporary price gaps. Arbitrage traders often exploit these spreads, but they may persist if transaction costs or withdrawal delays make cross-platform trading inefficient.