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%
Newport: Katherine Sebov vs Tatjana Maria Set Handicap +/-1.5
- Polymarket
Newport: Katherine Sebov vs Tatjana Maria Set Handicap +/-1.5 - Polymarket
1W
News
Positive
Negative
Neutral
Hover marker for details
Vol.
·
Resolved Jul 9, 2026
Closed: Jul 16, 11:00 AM EST
Polymarket
This market refers to the tennis match between Katherine Sebov and Tatjana Maria in the Newport, originally scheduled for July 9, 2026 at 11:00AM ET. This market will resolve to 'Katherine Sebov' if Katherine Sebov advances against Tatjana Maria. This market will resolve to 'Tatjana Maria' if Tatjana Maria advances against Katherine Sebov. 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 WTA Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Katherine Sebov and Tatjana Maria in the Newport, originally scheduled for July 9, 2026 at 11:00AM ET. This market will resolve to 'Katherine Sebov' if Katherine Sebov advances against Tatjana Maria. This market will resolve to 'Tatjana Maria' if Tatjana Maria advances against Katherine Sebov. 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 WTA Tour. A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set odds to balance liability and profit, while prediction markets like this one are driven by traders seeking to profit from accurate forecasts. Prediction markets can sometimes offer sharper, more efficient pricing because participants have real money at stake and face direct consequences for mispricing. Comparing this market's implied probabilities to major sportsbook lines can reveal where the two venues disagree on the likely outcome.
On Polymarket, traders set the odds by buying and selling outcome shares in an automated market maker system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each share reflects the collective belief of all participants about the likelihood of that outcome occurring. As new information emerges or trading activity shifts, prices adjust in real time. You can enter or exit positions at any point before the market closes, and your profit or loss depends on whether your position aligns with the final verified result.
This market resolves around Jul 16, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the official match result—specifically, which player wins the contest. Until that point, traders can continue to buy and sell shares as new developments or analysis shift their expectations. Resolution occurs automatically once the event is finalized and the data is confirmed.
Several factors could shift odds in this market before Jul 16, 2026. Recent player performance, injury reports, head-to-head records, and court conditions are key catalysts that traders monitor closely. News about either competitor's form, fitness, or mental state can trigger rapid repricing. Tournament draw position, seeding, and momentum from earlier rounds also influence expectations. Media coverage, expert analysis, and betting patterns at major sportsbooks may prompt traders to adjust their positions, causing the market price to swing in response to new information.