TOTAL VOLUME:

$134b

24H VOL:

$103,397,351

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,410,176,180

399,592

Markets across

30,097

events

MATCHED EVENTS:

2,622

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Tour
All
Sports
W50 Berkeley, CA: Kayla Day vs Ella McDonald
polymarket

Who will win Kayla Day vs Ella McDonald?

Volume:
$29,278

W50 Berkeley, CA: Kayla Day vs Ella McDonald

 - Polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 27, 2026

Closed: Sep 26, 8:26 PM EST

polymarket

Polymarket

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

W50 Berkeley, CA: Kayla Day vs Ella McDonald

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$18,658
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

Completed Match

100%
Yes 100¢No 0¢
0.1¢
N/A
$10,620
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set 1 Winner

100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set 2 Winner

100%
Yes 100¢No 0¢
0.9¢
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Total Sets: O/U 2.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set 1 O/U 8.5

100%
Yes 100¢No 0¢
1¢
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set 1 O/U 9.5

100%
Yes 100¢No 0¢
1¢
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set 1 O/U 10.5

100%
Yes 100¢No 0¢
1¢
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set 2 O/U 8.5

100%
Yes 100¢No 0¢
1¢
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set 2 O/U 9.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set 2 O/U 10.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Match O/U 21.5

100%
Yes 100¢No 0¢
1¢
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Match O/U 22.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Match O/U 23.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set Handicap +/-1.5

100%
Yes 100¢No 0¢
0.9¢
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
polymarket

W50 Berkeley, CA: Kayla Day vs Ella McDonald Set Handicap +/-1.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
4d 1h 3m
Yes
Total markets: 16

Description

This market refers to the tennis match between Kayla Day and Ella McDonald in the W50 Berkeley, CA, Main Draw, originally scheduled for September 26, 2026 at 2:00PM ET. This market will resolve to 'Kayla Day' if Kayla Day advances against Ella McDonald. This market will resolve to 'Ella McDonald' if Ella McDonald advances against Kayla Day. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 10, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.

Polymarket

This market refers to the tennis match between Kayla Day and Ella McDonald in the W50 Berkeley, CA, Main Draw, originally scheduled for September 26, 2026 at 2:00PM ET. This market will resolve to 'Kayla Day' if Kayla Day advances against Ella McDonald. This market will resolve to 'Ella McDonald' if Ella McDonald advances against Kayla Day. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 10, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.

Frequently asked questions

On Polymarket, the dashboard for the Kayla Day vs Ella McDonald match tracks the current odds, price history, and 24-hour trading volume. You can see how the implied probability of different outcomes shifts over time, reflecting the collective predictions of traders. Currently, the total volume for this market is $29,278, with $29,278 traded in the last 24 hours. This provides a real-time view of market sentiment regarding the outcome of this tennis match.

Prediction market odds often differ from traditional sportsbook odds, as they represent the wisdom of the crowd rather than a bookmaker’s assessment. Sportsbooks set lines to balance their risk and ensure profit, while this market allows anyone to express their belief about the probability of an outcome. Discrepancies can arise due to differing information, biases, or simply a larger and more diverse pool of participants contributing to the prediction market. It's common to see prediction markets more accurately reflect true probabilities, especially as an event approaches.

On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing different outcomes. The price of each share reflects the market’s collective belief about the probability of that outcome occurring. As more traders participate, the price adjusts to incorporate new information and perspectives. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market’s price is determined solely by supply and demand within Polymarket, and isn’t influenced by external factors or other prediction venues.

This market resolves around Oct 3, 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 Kayla Day vs Ella McDonald match, as reported by a recognized tennis authority. The platform will verify the result against these sources to determine the winning outcome and distribute payouts to those who correctly predicted the result. Traders should monitor official sources for the final result as the resolution date approaches.

Several factors could influence the price of this market before Oct 3, 2026. Any news regarding player form, injuries, or changes in playing conditions could significantly shift trader sentiment. Unexpected results in other matches involving these players, or broader trends in women's tennis, could also play a role. Even social media discussions and expert analysis can impact the market as traders incorporate new information into their predictions. Monitoring these signals will be key to understanding potential price movements.