---
title: "ITF MEN - SINGLES: M25 Oldenzaal (Netherlands), clay: Stian Klaassen vs Gray Voelzke"
canonical_url: https://betcrypto.now/events/itf-men-singles-m25-oldenzaal-netherlands-clay-stian-klaassen-vs-gray-voelzke
status: settled
trading_closes_at: 2026-09-02T11:00:00+00:00
settled_at: 2026-08-26T14:47:13+00:00
total_volume_usd: 30.67
venues: ["Polymarket"]
categories: ["Sports", "Tennis"]
prices_as_of: 2026-10-09T14:27:08+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/itf-men-singles-m25-oldenzaal-netherlands-clay-stian-klaassen-vs-gray-voelzke
---

# ITF MEN - SINGLES: M25 Oldenzaal (Netherlands), clay: Stian Klaassen vs Gray Voelzke

Settled · $31 traded · listed on Polymarket

## Result

**Stian Klaassen** won. Settled 2026-08-26.

## About

This market refers to the tennis match between Stian Klaassen and Gray Voelzke in the ITF MEN - SINGLES: M25 Oldenzaal (Netherlands), clay, originally scheduled for August 26, 2026 at 7:00AM ET.

This market will resolve to 'Stian Klaassen' if Stian Klaassen advances against Gray Voelzke.

This market will resolve to 'Gray Voelzke' if Gray Voelzke advances against Stian Klaassen.

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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.

_From Polymarket's listing._

## Other markets

- SINGLES: M25 Oldenzaal (Netherlands), clay: Stian Klaassen vs Gray Voelzke: Completed Match — 2 outcomes
- SINGLES: M25 Oldenzaal (Netherlands), clay: Stian Klaassen vs Gray Voelzke: ITF MEN - SINGLES: M25 Oldenzaal (Netherlands), clay: Stian Klaassen vs Gray Voelzke Set 1 Winner — 2 outcomes
- Total O/U 8.5 — 2 outcomes
- Spread -1.5 — 2 outcomes
- Total O/U 21.5 — 2 outcomes
- SINGLES: M25 Oldenzaal (Netherlands), clay: Stian Klaassen vs Gray Voelzke: ITF MEN - SINGLES: M25 Oldenzaal (Netherlands), clay: Stian Klaassen vs Gray Voelzke Set 2 Winner — 2 outcomes
- Total O/U 2.5 — 2 outcomes
- Total O/U 9.5 — 2 outcomes
- Total O/U 22.5 — 2 outcomes
- Total O/U 10.5 — 2 outcomes
- Total O/U 23.5 — 2 outcomes

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

## Open on a venue

- [Polymarket](https://betcrypto.now/go/e/349893?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/itf-men-singles-m25-oldenzaal-netherlands-clay-stian-klaassen-vs-gray-voelzke.

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.