TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Guadalajara Open Akron: Carole Monnet vs Sloane Stephens Set 1 O/U 8.5
- Polymarket
Guadalajara Open Akron: Carole Monnet vs Sloane Stephens Set 1 O/U 8.5 - Polymarket
1W
News
Positive
Negative
Neutral
Hover marker for details
Vol.
·
Resolved Sep 14, 2026
Closed: Sep 14, 4:18 PM EST
Polymarket
This market tracks whether Carole Monnet will advance against Sloane Stephens in their upcoming tennis match at the Guadalajara Open Akron. Currently, Polymarket assigns a 100.0% probability to Monnet vs. Stephens exceeding 21.5 games. Resolution will be based on the official scores reported at https://www.wtatennis.com/scores. Keep an eye on the match itself, originally scheduled for September 14, 2026 at 3:00PM ET, as the outcome will be determined by whether Monnet advances against Stephens in this fixture.
This market refers to the tennis match between Carole Monnet and Sloane Stephens in the Guadalajara Open Akron, originally scheduled for September 14, 2026 at 3:00PM ET. This market will resolve to 'Carole Monnet' if Carole Monnet advances against Sloane Stephens. This market will resolve to 'Sloane Stephens' if Sloane Stephens advances against Carole Monnet. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 28, 2026, 11:59 PM ET (14 days after the scheduled start), 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 often reflect the collective wisdom of a diverse group of bettors, potentially offering a different perspective than traditional sportsbooks. Sportsbooks set their lines based on their own models and risk assessment, while this market is driven by individuals trading based on their own research and insights. It’s common to see discrepancies between the two, especially early on, as information becomes available and the market adjusts. Comparing the two can be a useful exercise when forming your own opinion on the likely outcome of the match.
On Polymarket, this market is priced through a continuous auction mechanism, where traders buy and sell shares representing their belief in the outcome. The price of a share directly corresponds to the probability of that outcome occurring, as perceived by the market participants. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more people trade, the price fluctuates, reflecting the evolving consensus. The current price indicates the market's aggregate forecast for who will win the Stephens vs Monnet match, and you can see how this has changed over time on the dashboard.
This market resolves around Sep 21, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Guadalajara Open Akron match between Carole Monnet and Sloane Stephens, as reported by a recognized tennis authority. The platform will verify the result against these sources to determine which outcome – a win for Monnet or a win for Stephens – is the correct one, and shares will be settled accordingly.
Several factors could influence trading activity in this market. Any news regarding player form, such as injury updates for either Carole Monnet or Sloane Stephens, would likely cause significant movement. Changes in weather conditions at the tournament venue could also impact the odds, as could analysis from tennis experts offering their predictions. Unexpected results in earlier rounds of the tournament, or shifts in public perception of each player’s chances, could also drive trading volume and price changes in this market.