---
title: "Alex Kuperstein vs Goncalo Da Rosa Castro"
canonical_url: https://betcrypto.now/events/alex-kuperstein-vs-goncalo-da-rosa-castro
status: settled
kickoff_at: 2026-10-18T07:00:00+00:00
trading_closes_at: 2026-10-19T03:59:00+00:00
settled_at: 2026-10-18T11:20:00+00:00
total_volume_usd: 0
venues: ["Polymarket", "Polymarket US"]
categories: ["Sports", "Tennis"]
prices_as_of: 2026-11-05T13:07:03+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/alex-kuperstein-vs-goncalo-da-rosa-castro
---

# Alex Kuperstein vs Goncalo Da Rosa Castro

Settled · kickoff 2026-10-18 07:00 UTC · listed on Polymarket, Polymarket US

## Result

**Goncalo Da Rosa Castro** won. Settled 2026-10-18.

## About

This market refers to the tennis match between Alex Kuperstein and Goncalo Da Rosa Castro in the M15 Bol, Qualifying, originally scheduled for October 18, 2026 at 3:00AM ET.

This market will resolve to 'Alex Kuperstein' if Alex Kuperstein advances against Goncalo Da Rosa Castro.

This market will resolve to 'Goncalo Da Rosa Castro' if Goncalo Da Rosa Castro advances against Alex Kuperstein.

If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 1, 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

- M15 Bol: Alex Kuperstein vs Goncalo Da Rosa Castro Set Handicap +/-1.5 — 2 outcomes
- M15 Bol: Alex Kuperstein vs Goncalo Da Rosa Castro 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/884829?via=md)
- [Polymarket US](https://betcrypto.now/go/e/882828?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/alex-kuperstein-vs-goncalo-da-rosa-castro).

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