Stadium: Center Court Round: 25 Ground: Clay
| Tunis, Tunisia, Qualifying | 2018/04/14 09:30 | Lenz, Julian v David Pichler | 2-6,3-6 |
| Challenger Trieste | 2021/07/28 10:00 | Lenz, Julian v Orlando Luz | 5-7,0-6 |
| Challenger Trieste | 2021/07/27 10:30 | Duje Ajdukovic v Lenz, Julian | 7-5,3-6,3-6 |
| Milan, Italy | 2021/06/22 08:30 | Lenz, Julian v Duje Ajdukovic | 1-6,2-6 |
| Forli 6, Italy | 2021/06/14 12:30 | Lenz, Julian v Quentin Halys | 3-6,3-6 |
| Challenger - Oeiras | 2021/05/26 10:00 | Holger Rune v Lenz, Julian | 5-7,6-4,6-3 |
| Challenger - Oeiras | 2021/05/24 14:05 | Corentin Denolly v Lenz, Julian | 4-6,0-6 |
| Challenger Biella | 2021/05/16 11:00 | Lenz, Julian v Francesco Passaro | 6-7,1-6 |
| ITF M25 Biel | 2021/03/30 13:20 | Jelle Sels v Lenz, Julian | 7-5,6-4 |
| ITF M25 Kottingbrunn | 2021/07/22 09:40 | Hampel, Lenny v David Pichler | 7-6,6-2 |
| ITF M25 Kottingbrunn | 2021/07/21 09:25 | Paroulek, Tadeas v David Pichler | 6-4,2-6,4-6 |
| ITF M25 Velenje | 2021/07/07 09:05 | Rikl, Patrik v David Pichler | 6-3,4-6,6-2 |
| ITF M15 Gaiba | 2021/06/09 10:40 | Kirill Kivattsev v David Pichler | 4-6,6-3,6-3 |
| ITF M25 Kiseljak | 2021/05/27 10:40 | David Pichler v Hernan Casanova | 3-6,3-6 |
| ITF M25 Kiseljak | 2021/05/26 15:30 | Soares Klier, Gilbert v David Pichler | 4-6,3-6 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/05/20 08:00 | Peter Fajta v David Pichler | 7-6,3-6,6-1 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/05/19 12:20 | Goldsteiner, Peter v David Pichler | 3-6,2-6 |