TOTAL VOLUME:

$134.1b

24H VOL:

$113,466,932

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,423,222,590

402,751

Markets across

30,217

events

MATCHED EVENTS:

2,632

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Halle Open: Nuno Borges vs Felix Auger-Aliassime
kalshi
polymarket

Halle Open: Nuno Borges vs Felix Auger-Aliassime

Volume:
$536,493

Over 18.5 games

all

2 markets

Kalshi

Polymarket

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jun 15, 2026

Closed: Jun 15, 10:52 AM EST

kalshi

Kalshi

View
Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Over 18.5 games

View
100%
Yes 100¢No 0¢
100¢
N/A
$4,108
N/A
N/A
$3,887
Settled
Yes
polymarket

Halle Open: Nuno Borges vs Felix Auger-Aliassime Match O/U 22.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$334
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Nuno Borges vs Felix Auger-Aliassime Match O/U 23.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$2,754
N/A
N/A
N/A
Settled
Yes
kalshi

Over 23.5 games

View
100%
Yes 100¢No 0¢
100¢
N/A
$1,507
N/A
N/A
$1,244
Settled
Yes
polymarket

Halle Open: Nuno Borges vs Felix Auger-Aliassime Set 2 Winner

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$200
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Nuno Borges vs Felix Auger-Aliassime Total Sets: O/U 2.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$82
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Nuno Borges vs Felix Auger-Aliassime Match O/U 21.5

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

Halle Open: Nuno Borges vs Felix Auger-Aliassime

View
0%
Yes 0¢No 100¢
—
N/A
$520,134
N/A
N/A
N/A
Settled
Yes
kalshi

Over 28.5 games

View
0%
Yes 0¢No 100¢
100¢
N/A
$3,875
N/A
N/A
$3,274
Settled
No
polymarket

Halle Open: Nuno Borges vs Felix Auger-Aliassime Set 1 Winner

View
0%
Yes 0¢No 100¢
—
N/A
$1,957
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Nuno Borges vs Felix Auger-Aliassime Set Handicap +/-1.5

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

Halle Open: Nuno Borges vs Felix Auger-Aliassime Set 1 O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
$10
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
polymarket

Halle Open: Nuno Borges vs Felix Auger-Aliassime Set 2 O/U 10.5

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

Halle Open: Nuno Borges vs Felix Auger-Aliassime Set 2 O/U 8.5

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

Halle Open: Nuno Borges vs Felix Auger-Aliassime Set 2 O/U 9.5

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

Halle Open: Nuno Borges vs Felix Auger-Aliassime Set 1 O/U 8.5

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

Halle Open: Nuno Borges vs Felix Auger-Aliassime Set 1 O/U 9.5

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

Description

This event group covers a professional tennis match between Nuno Borges and Felix Auger-Aliassime at the 2026 ATP Halle Open (Round of 32), scheduled for June 15, 2026. Markets track both the match winner and the total number of games played, with separate resolution criteria for match completion status.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Polymarket and Kalshi define fundamentally different events: Polymarket resolves on match winner and completion status (binary/ternary outcomes), while Kalshi resolves on total games played (quantitative thresholds). These are orthogonal market types, not conflicting versions of the same market.Hero tip: Treat these as two separate markets. Polymarket is a winner/completion bet; Kalshi is a match-length bet. A retirement or walkover will resolve Polymarket to 50-50 or No, but Kalshi's game count may be undefined or zero, failing to trigger any threshold. Conversely, a full match can satisfy both Polymarket completion and Kalshi game thresholds simultaneously. Do not assume one market's resolution determines the other.

Critical divergence points:

  • Polymarket: Two separate markets: (1) Winner market resolves to Borges or Auger-Aliassime if either advances; resolves 50-50 if walkover, cancellation, tie, or delayed >7 days. (2) Completion market resolves Yes if all games/sets played to completion under normal play; resolves No if walkover, retirement, default, disqualification, cancellation, tie, or delayed >7 days. Primary source: ATP Tour official data or credible consensus.
  • Kalshi: Three independent over/under markets on total completed games: >18.5, >23.5, >28.5. Each resolves Yes if threshold exceeded, No otherwise. No explicit handling of walkovers, retirements, or cancellations; game count logic implies these scenarios result in low or zero game counts, failing thresholds.
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 Nuno Borges and Felix Auger-Aliassime in the Halle Open, originally scheduled for June 15, 2026 at 4:00AM ET. This market will resolve to 'Nuno Borges' if Nuno Borges advances against Felix Auger-Aliassime. This market will resolve to 'Felix Auger-Aliassime' if Felix Auger-Aliassime advances against Nuno Borges. 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 between Nuno Borges and Felix Auger-Aliassime in the 2026 ATP Halle Round of 32. If the match does not occur before play begins due to injury, walkover, forfeiture, or cancellation, the market resolves to fair price. If 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 and traditional sportsbooks price tennis matches through different mechanisms. Sportsbooks employ oddsmakers and manage liability across fixed bet types, while prediction markets aggregate trader beliefs in real time through continuous order books. This market's odds reflect what thousands of independent traders believe will happen, often incorporating faster-moving information than sportsbooks update. Comparing this market's prices to major sportsbooks can reveal where public perception diverges from professional bookmaker estimates, creating potential arbitrage or research opportunities.

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 operates distinct market structures, fee schedules, and user bases, all of which influence how prices form. Polymarket uses an automated market maker for continuous liquidity, while Kalshi employs order-book mechanics. Differences in trading costs, minimum order sizes, and the composition of active traders can cause temporary price gaps. Additionally, each platform may list slightly different outcome categories—for instance, one might focus on match winner while another emphasizes total games—leading to natural pricing variation even when tracking the same underlying event.

Key catalysts include injury announcements, recent tournament performance, and changes in player ranking or form. Draws, seeding updates, or schedule changes announced by the tournament organizers can shift trader sentiment. Head-to-head records and surface-specific statistics often drive repricing as the match date approaches. Weather forecasts, player statements in media, and results from warm-up events may also influence odds. Sudden shifts in trading volume or large position changes on either platform can signal new information entering the market, prompting price adjustments across both venues.