---
title: "Nishikori vs Antonius"
canonical_url: https://betcrypto.now/events/nishikori-vs-antonius
status: settled
kickoff_at: 2026-08-26T15:00:00+00:00
trading_closes_at: 2026-09-09T15:00:00+00:00
settled_at: 2026-08-26T23:04:09+00:00
total_volume_usd: 228909.27
venues: ["Kalshi", "Polymarket", "Polymarket US"]
categories: ["Sports", "Tennis"]
prices_as_of: 2026-10-09T10:18:55+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/nishikori-vs-antonius
---

# Nishikori vs Antonius

Settled · kickoff 2026-08-26 15:00 UTC · $228,909 traded · listed on Kalshi, Polymarket, Polymarket US

## Result

**Kei Nishikori** won. Settled 2026-08-26.

## About

This market refers to the tennis match between Kei Nishikori and Michael Antonius in the US Open, Qualification ATP, originally scheduled for August 26, 2026 at 11:00AM ET.

This market will resolve to 'Kei Nishikori' if Kei Nishikori advances against Michael Antonius.

This market will resolve to 'Michael Antonius' if Michael Antonius advances against Kei Nishikori.

If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 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 ATP Tour. A consensus of credible reporting may also be used.

_From Polymarket's listing._

## Other markets

- Spread 4.5 — 2 outcomes
- Spread 2.5 — 2 outcomes
- Spread 1.5 — 2 outcomes
- Michael Antonius by over 1.5 sets — 2 outcomes
- Set 1 Winner — 2 outcomes
- Total O/U 20.5 — 2 outcomes
- Spread -2.5 — 2 outcomes
- Over 2.5 sets — 2 outcomes
- Nishikori wins 2-0 — 2 outcomes
- Kei Nishikori by over 1.5 sets — 2 outcomes
- Total O/U 25.5 — 2 outcomes
- Spread -4.5 — 2 outcomes
- Nishikori wins 2-1 — 2 outcomes
- Antonius wins 2-0 — 2 outcomes
- Antonius wins 2-1 — 2 outcomes
- Set 2 Winner — 2 outcomes
- Total O/U 17.5 — 2 outcomes
- Total O/U 27.5 — 2 outcomes
- Spread -0.5 — 4 outcomes
- Spread 7.5 — 2 outcomes
- Spread 0.5 — 2 outcomes
- Spread -7.5 — 2 outcomes
- Spread 3.5 — 2 outcomes
- Total O/U 30.5 — 2 outcomes
- Spread 5.5 — 2 outcomes
- Total O/U 18.5 — 2 outcomes
- Total O/U 28.5 — 2 outcomes
- Spread -5.5 — 2 outcomes
- Total O/U 19.5 — 2 outcomes
- Total O/U 24.5 — 2 outcomes
- Total O/U 29.5 — 2 outcomes
- Spread -3.5 — 2 outcomes
- Completed Match — 2 outcomes
- Total O/U 8.5 — 2 outcomes
- US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 1 Winner — 2 outcomes
- Total O/U 21.5 — 2 outcomes
- Total O/U 2.5 — 2 outcomes
- US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 2 Winner — 2 outcomes
- Spread -1.5 — 4 outcomes
- Total O/U 9.5 — 2 outcomes
- … and 3 more

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

## Open on a venue

- [Kalshi](https://betcrypto.now/go/e/345512?via=md)
- [Polymarket](https://betcrypto.now/go/e/346044?via=md)
- [Polymarket US](https://betcrypto.now/go/e/346405?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/nishikori-vs-antonius.

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.