Claus Piening
- Country
- Germany
- Date of birth
- 2004-01-01
- Ranking ATP
- 1912 · 1 points
- Season 2026
- 4–1
Recent matches
| Date | Tournament | Round | Opponent | Score | Result |
|---|---|---|---|---|---|
| 2026-09-26 | Pardubice | QF | Jiri Cizek | 1-6 6-3 | lost |
| 2026-09-25 | Pardubice | R16 | Kalin Ivanovski | 7-5 1-2 | won |
| 2026-09-23 | Pardubice | R32 | Martin Soukal | 6-2 6-2 | won |
| 2026-09-22 | Pardubice | R32 | Andrea Brignacca | 3-6 6-2 13-11 | won |
| 2026-09-20 | Pardubice | R64 | Jan Frohlich | 6-3 6-1 | won |