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: Jul 9, 1:40 PM EST
Kalshi
This event group tracks game-total markets for the professional tennis match between Sahaja Yamalapalli and Anna Rogers at the Newport WTA 125K tournament. Across Polymarket and Kalshi, the leading outcome—Yamalapalli vs. Rogers: Match O/U 23.5—shows a consensus probability of 10.0%, while the alternative threshold of O/U 21.5 stands at 100.0%. Resolution will be determined by WTA Tennis official scoring records. Watch for the match scheduled on July 7, 2026 at 11:00 AM ET, as the actual outcome will settle these markets.
This market refers to the tennis match between Sahaja Yamalapalli and Anna Rogers in the Newport, originally scheduled for July 7, 2026 at 11:00AM ET. This market will resolve to 'Sahaja Yamalapalli' if Sahaja Yamalapalli advances against Anna Rogers. This market will resolve to 'Anna Rogers' if Anna Rogers advances against Sahaja Yamalapalli. 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.
The match must have a ball played to be considered official. Resolution occurs based on the winner of the Yamalapalli vs Rogers professional tennis match in the 2026 WTA 125K Newport Round of 32. If the match does not occur before play begins due to injury, walkover, forfeiture, or other cancellation, the market resolves to a fair price. If the match is postponed or delayed, the market remains open and closes after the rescheduled match concludes within two weeks.
Prediction markets and sportsbooks use different mechanisms to arrive at odds. Sportsbooks set lines based on professional oddsmakers' models and manage risk through margin; prediction markets aggregate decentralized trader beliefs through continuous price discovery. This market reflects what thousands of independent participants are willing to stake on each outcome, often incorporating real-time information faster than traditional sportsbooks update their lines. Comparing the two can reveal where public sentiment diverges from professional estimates, though both serve as useful reference points for assessing match probabilities.
Polymarket and Kalshi operate under different regulatory frameworks, fee structures, and user bases, which can create temporary price gaps. 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. Liquidity distribution varies between platforms—one may attract more volume from professional traders while the other draws casual participants—leading to slightly different implied probabilities. Additionally, each platform's order-book depth and trading mechanics influence how quickly new information gets priced in. These differences typically narrow over time as arbitrageurs exploit gaps, but they can persist during low-liquidity windows or when major news breaks.
Several factors can shift trader sentiment before the match. Recent tournament results, ranking changes, or injury reports involving either player often trigger sharp price moves. Court surface preference, head-to-head records, and pre-match commentary from analysts can also influence positioning. Weather forecasts, if relevant to outdoor play, and late-breaking news about player form or fitness will likely drive volatility. Additionally, if one player advances through earlier rounds with dominant performances while the other struggles, market pricing will adjust accordingly. Monitor sports news and official tournament updates for catalysts.