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Stian Klaassen
Stian Klaassen is a professional tennis player from Netherlands, 23 years old, currently outside the ATP top 500. Klaassen has won 0 career singles titles from 1 final. In 2026 the record stands at 10-8 (10-8 at ITF / Futures level). Last match: lost to Demanet 4-6, 6-4, 6-1 in the R2 at M25 Oldenzaal, August 27, 2026.
10-82026 win–loss
0Career titles
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Recent results
| Date | Tournament | Rd. | Opponent | Result |
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The last ten singles matches, from the results feed. Click a column header to sort.
Career record by surface
Ranking, recent weeks
Titles & finals
Win–loss by level · this season
| Level | Record |
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