| Date | R | HEIM v AUSWÄRTS | - |
|---|---|---|---|
| 06/10 09:00 | 26 | Daisuke Sumizawa v Ivan Liutarevich | 7-5,6-7,1-6 |
| 06/08 13:00 | 25 | Dostanbek Tashbulatov v Daisuke Sumizawa | 5-7,1-6 |
| 06/01 11:10 | 25 | Lorenzo Joaquin Rodriguez v Daisuke Sumizawa | 3-6,6-3,7-6 |
| 05/31 08:00 | 44 | Daisuke Sumizawa v Samuele Pieri | 6-4,2-6,10-6 |
| 05/30 08:30 | 44 | Daisuke Sumizawa v Pavle Daljev | 6-1,6-3 |
| 05/29 09:30 | 44 | Daisuke Sumizawa v Andrej Radojicic | 6-1,6-1 |