---
title: "Koike vs Day"
canonical_url: https://betcrypto.now/events/koike-vs-day
status: settled
kickoff_at: 2026-10-17T02:30:00+00:00
trading_closes_at: 2026-10-31T02:30:00+00:00
settled_at: 2026-10-17T04:30:29+00:00
total_volume_usd: 854010.84
venues: ["Azuro", "Kalshi", "Novig", "Polymarket", "Polymarket US"]
categories: ["Sports", "Tennis"]
prices_as_of: 2026-11-02T00:41:45+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/koike-vs-day
---

# Koike vs Day

Settled · kickoff 2026-10-17 02:30 UTC · $854,011 traded · listed on Azuro, Kalshi, Novig, Polymarket, Polymarket US

## Result

**Kayla Day** won. Settled 2026-10-17.

## About

The following market refers to the Koike vs Day professional tennis match in the 2026 WTA Osaka Qualification Round 1 after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks).

Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.

_From Kalshi's listing._

## Other markets

- Set 2 Winner — 2 outcomes
- Set 1 Winner — 2 outcomes
- Spread: Kayla Day −5.5 — 2 outcomes
- Total Games — 3 outcomes
- Handicap 6 — 2 outcomes
- Total O/U 6.5 — 2 outcomes
- Total O/U 24.5 — 2 outcomes
- Total O/U 25.5 — 2 outcomes
- Total O/U 26.5 — 2 outcomes
- Total O/U 27.5 — 2 outcomes
- Total O/U 28.5 — 2 outcomes
- Total O/U 29.5 — 2 outcomes
- Completed Match — 2 outcomes
- Total O/U 17.5 — 2 outcomes
- Total Games Odd/Even — 2 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Set 1 Winner — 2 outcomes
- Total O/U 18.5 — 4 outcomes
- Set 1 - Total Games Over/Under — 2 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Set 2 Winner — 2 outcomes
- Total O/U 19.5 — 4 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Total Sets: O/U 2.5 — 2 outcomes
- Total O/U 20.5 — 4 outcomes
- Total O/U 21 — 2 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Set 1 O/U 8.5 — 2 outcomes
- Set 1 - Total Games Over/Under — 2 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Set 1 O/U 9.5 — 2 outcomes
- Total O/U 19 — 2 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Set 1 O/U 10.5 — 2 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Set 2 O/U 8.5 — 2 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Set 2 O/U 9.5 — 2 outcomes
- Total O/U 20 — 2 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Set 2 O/U 10.5 — 2 outcomes
- Total O/U 9 — 2 outcomes
- Total O/U 21.5 — 4 outcomes
- Spread: Ena Koike −1.5 — 2 outcomes
- Total O/U 22.5 — 2 outcomes
- Total O/U 8.5 — 2 outcomes
- Total O/U 23.5 — 2 outcomes
- Japan Women's Open, Qualification: Ena Koike vs Kayla Day Set Handicap +/-1.5 — 2 outcomes
- Total O/U 7.5 — 2 outcomes
- … and 12 more

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

## Open on a venue

- [Azuro](https://betcrypto.now/go/e/868761?via=md)
- [Kalshi](https://betcrypto.now/go/e/864538?via=md)
- [Novig](https://betcrypto.now/go/e/865681?via=md)
- [Polymarket](https://betcrypto.now/go/e/864693?via=md)
- [Polymarket US](https://betcrypto.now/go/e/863875?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 the [JSON API](https://betcrypto.now/api/v1/events/koike-vs-day).

BetCrypto is an odds-comparison and information service. It accepts no wagers and gives no betting or financial advice; prediction-market availability depends on where you live.