Monterrey Open: Janice Tjen vs Dayana Yastremska

Q: Monterrey Open: Janice Tjen vs Dayana Yastremska

Prediction markets currently price this at 63%. A YES share costs 63.0¢ and pays $1 if it happens. That is a return of 58.7% over 8d.

Monterrey Open: Janice Tjen vs Dayana Yastremska$6k liquidity$416 volumecloses 8d

TennisSportsGames

Trade on Polymarket

BUY YES

Cost: 63.0¢
Implied chance: 63.0%
Return if right: 58.7%
Spread cost: 8%

If you put in $100

You get 158.7 shares at 63.0¢ each.

YES wins: $158.73 back, a profit of $58.73. YES loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $5.20 of that profit. Without it you would make $63.93.

Assumes the whole order fills at this price. A large order eats into the book and averages worse.

Buy YES on Polymarket

BUY NO

Cost: 41.0¢
Implied chance: 41.0%
Return if right: 143.9%
Spread cost: 8%

If you put in $100

You get 243.9 shares at 41.0¢ each.

NO wins: $243.90 back, a profit of $143.90. NO loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $12.51 of that profit. Without it you would make $156.41.

Assumes the whole order fills at this price. A large order eats into the book and averages worse.

Buy NO on Polymarket

Chance over time

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Latest: Aug 23, 08:22 AM4 further outcomes not shown

Latest news

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Headlines are matched on the names in “Monterrey Open: Janice Tjen vs Dayana Yastremska”. Nobody checks them by hand, so one may not be relevant. They also say nothing about whether the price has already moved on this news.

How this market resolves

This market refers to the tennis match between Janice Tjen and Dayana Yastremska in the Monterrey Open, originally scheduled for August 24, 2026 at 12:00PM ET. This market will resolve to 'Janice Tjen' if Janice Tjen advances against Dayana Yastremska. This market will resolve to 'Dayana Yastremska' if Dayana Yastremska advances against Janice Tjen. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 7, 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.

Source: https://www.wtatennis.com/scores