| ITF M25 Ystad | 08/14 14:30 | 54 | Stijn Pel v William Alsterback | 6-2,6-2 | |
| ITF M15 Kalmar | 05/15 14:45 | 54 | Niels Visker v William Alsterback | 6-0,6-0 | |
| ITF M25 Varnamo | 05/08 13:35 | 54 | Peter Goldsteiner v William Alsterback | 6-0,6-1 | |
| ITF M15 Trier | 08/22 08:00 | 54 | Felix Einig v William Alsterback | 6-1,6-2 | |
| ITF M15 Sofia | 07/03 09:00 | 44 | William Alsterback v Ioannis Kountourakis | 1-6,1-6 | |
| ITF M15 Cairo | 04/13 14:55 | 25 | Faris Zakaryia v William Alsterback | 6-1,6-0 | |
| ITF M15 Sharm El Sheikh | 04/06 14:55 | 25 | William Alsterback v Samuel Vincent Ruggeri | 2-6,1-6 | |
| ITF M15 Sharm El Sheikh | 03/20 13:30 | 62 | William Alsterback v Leonardo Malgaroli | 3-6,0-6 |