---
title: "Kostyuk vs Stephens"
canonical_url: https://betcrypto.now/events/kostyuk-vs-stephens-kalshi-c3a3068c
status: settled
kickoff_at: 2026-09-02T15:00:00+00:00
trading_closes_at: 2026-09-16T15:00:00+00:00
settled_at: 2026-09-02T19:38:34+00:00
total_volume_usd: 461908.43
venues: ["Azuro", "Gemini", "Kalshi", "Limitless", "Polymarket"]
categories: ["Sports", "Tennis"]
prices_as_of: 2026-10-09T09:57:49+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/kostyuk-vs-stephens-kalshi-c3a3068c
---

# Kostyuk vs Stephens

Settled · kickoff 2026-09-02 15:00 UTC · $461,908 traded · listed on Azuro, Gemini, Kalshi, Limitless, Polymarket

## Result

**Marta Kostyuk** won. Settled 2026-09-02.

## About

This market refers to the tennis match between Marta Kostyuk and Sloane Stephens in the US Open WTA, originally scheduled for September 2, 2026 at 11:00AM ET.

This market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Sloane Stephens.

This market will resolve to 'Sloane Stephens' if Sloane Stephens advances against Marta Kostyuk.

If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 16, 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.

_From Polymarket's listing._

## Other markets

- Handicap -7 — 2 outcomes
- Completed Match — 2 outcomes
- Handicap -1.5 — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Set 2 Winner — 2 outcomes
- Handicap -4.5 — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Set 1 Winner — 2 outcomes
- Total O/U 19 — 2 outcomes
- Total O/U 21.5 — 2 outcomes
- Total O/U 20 — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Set 1 O/U 8.5 — 2 outcomes
- Total O/U 6.5 — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Set 2 O/U 8.5 — 2 outcomes
- Total O/U 13 — 2 outcomes
- Spread -5.5 — 4 outcomes
- Total O/U 12.5 — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Set Handicap +/-1.5 — 2 outcomes
- 1st Set: Total Games Odd/Even — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Total Sets: O/U 2.5 — 2 outcomes
- Total O/U 19.5 — 2 outcomes
- Total O/U 22.5 — 2 outcomes
- 1st Set: Total Games — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Set 1 O/U 9.5 — 2 outcomes
- Total O/U 17.5 — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Set 2 O/U 9.5 — 2 outcomes
- Total O/U 7 — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Set 1 O/U 10.5 — 2 outcomes
- Total O/U 18 — 2 outcomes
- Total O/U 23.5 — 2 outcomes
- Handicap -6.5 — 2 outcomes
- US Open WTA: Marta Kostyuk vs Sloane Stephens Set 2 O/U 10.5 — 2 outcomes
- 1st Set: Handicap Games — 2 outcomes
- 1st Set: Total Games — 2 outcomes
- Handicap -6 — 2 outcomes
- Handicap 1.5 — 2 outcomes
- Total O/U 18.5 — 2 outcomes
- Total O/U 6 — 2 outcomes
- Handicap -5 — 2 outcomes
- Total O/U 2.5 — 2 outcomes
- 1st Set: Winner — 2 outcomes
- 1st Set: Handicap Games — 2 outcomes
- … and 3 more

_Every market's prices are on the event page._

## Open on a venue

- [Azuro](https://betcrypto.now/go/e/416649?via=md)
- [Gemini](https://betcrypto.now/go/e/404633?via=md)
- [Kalshi](https://betcrypto.now/go/e/402942?via=md)
- [Limitless](https://betcrypto.now/go/e/411782?via=md)
- [Polymarket](https://betcrypto.now/go/e/405356?via=md)

---

Probability is the cross-venue consensus (book midpoints, 0–100%). Venue columns are what buying costs there (the ask). Prices move constantly; re-check at the canonical URL or https://betcrypto.now/api/v1/events/kostyuk-vs-stephens-kalshi-c3a3068c.

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