---
title: "Sayaka Ishii vs Rion Itaya"
canonical_url: https://betcrypto.now/events/sayaka-ishii-vs-rion-itaya
status: settled
kickoff_at: 2026-09-25T02:00:00+00:00
trading_closes_at: 2026-10-02T02:00:00+00:00
settled_at: 2026-09-25T06:46:20+00:00
total_volume_usd: 2722.11
venues: ["Polymarket", "Polymarket US"]
categories: ["Sports", "Tennis"]
prices_as_of: 2026-10-09T16:13:45+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/sayaka-ishii-vs-rion-itaya
---

# Sayaka Ishii vs Rion Itaya

Settled · kickoff 2026-09-25 02:00 UTC · $2,722 traded · listed on Polymarket, Polymarket US

## Result

**Sayaka Ishii** won. Settled 2026-09-25.

## About

This market refers to the tennis match between Sayaka Ishii and Rion Itaya in the W50 Nanao, Main Draw, originally scheduled for September 24, 2026 at 10:00PM ET.

This market will resolve to 'Sayaka Ishii' if Sayaka Ishii advances against Rion Itaya.

This market will resolve to 'Rion Itaya' if Rion Itaya advances against Sayaka Ishii.

If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 8, 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.

_From Polymarket's listing._

## Other markets

- Completed Match — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set 1 Winner — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set 2 Winner — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Total Sets: O/U 2.5 — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set 1 O/U 8.5 — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set 1 O/U 9.5 — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set 1 O/U 10.5 — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set 2 O/U 8.5 — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set 2 O/U 9.5 — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set 2 O/U 10.5 — 2 outcomes
- Total O/U 21.5 — 2 outcomes
- Total O/U 22.5 — 2 outcomes
- Total O/U 23.5 — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set Handicap +/-1.5 — 2 outcomes
- W50 Nanao: Sayaka Ishii vs Rion Itaya Set Handicap +/-1.5 — 2 outcomes

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

## Open on a venue

- [Polymarket](https://betcrypto.now/go/e/610897?via=md)
- [Polymarket US](https://betcrypto.now/go/e/611870?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/sayaka-ishii-vs-rion-itaya.

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