Set Handicap: Kostyuk (-1.5) vs Stephens (+1.5)

Q: Set Handicap: Kostyuk (-1.5) vs Stephens (+1.5)

Prediction markets currently price this at 98%. A YES share costs 98.0¢ and pays $1 if it happens. That is a return of 2.0% over 8d.

Cincinnati Open: Marta Kostyuk vs Sloane Stephens$4 liquidity$0 volumecloses 8d

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Trade on Polymarket

BUY YES

Cost: 98.0¢
Implied chance: 98.0%
Return if right: 2.0%
Spread cost: 98%

If you put in $100

You get 102.0 shares at 98.0¢ each.

YES wins: $102.04 back, a profit of $2.04. YES loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $97.96 of that profit. Without it you would make $100.00.

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: 98.0¢
Implied chance: 98.0%
Return if right: 2.0%
Spread cost: 98%

If you put in $100

You get 102.0 shares at 98.0¢ each.

NO wins: $102.04 back, a profit of $2.04. NO loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $97.96 of that profit. Without it you would make $100.00.

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

1H 6H 1D 1W 1M ALL

Latest: Aug 17, 07:25 AM4 further outcomes not shown

Latest news

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How this market resolves

This market refers to the tennis match between Marta Kostyuk and Sloane Stephens in the Cincinnati Open, originally scheduled for August 18, 2026 at 10:00AM ET. This market will resolve to "Kostyuk" if Marta Kostyuk wins by 2 or more sets than Sloane Stephens, based on the final completed score. Otherwise, it will resolve to "Stephens." If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official WTA results.

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