Stadium: Court 2 Round: 25 Ground: Clay
| ITF M15 Warmbad-Villach | 2021/08/20 12:50 | Gabriel Decamps v Lukas Krainer | 6-2,6-3 |
| ITF M15 Warmbad-Villach | 2021/08/19 09:55 | Lukas Krainer v Tom Kocevar-Desman | 6-3,7-5 |
| ITF M15 Warmbad-Villach | 2021/08/18 14:35 | Mario G Fernandez v Lukas Krainer | 6-7,6-2,1-6 |
| ITF M15 Cairo | 2021/08/06 09:55 | Lukas Krainer v Quentin Folliot | 4-6,1-6 |
| ITF M15 Cairo | 2021/08/05 09:20 | Lukas Krainer v Constantin Bittoun Kouzmine | 6-1,6-2 |
| ITF M15 Cairo | 2021/08/04 09:10 | Karim-Mohamed Maamoun v Lukas Krainer | 1-6,2-6 |
| ITF M15 Cairo | 2021/07/29 08:00 | Mathieu Perchicot v Lukas Krainer | 7-6,5-7,6-1 |
| ITF M15 Cairo | 2021/07/28 09:40 | Lukas Krainer v Saud Alhogbani | 6-3,6-1 |
| ITF M15 Bad Waltersdorf | 2021/08/23 13:00 | Admir Kalender v Fletcher Scott | 6-4,6-2 |
| ITF M15 Bad Waltersdorf | 2021/08/23 07:00 | Luigi Sorrentino v Admir Kalender | 2-6,1-6 |
| ITF M15 Lodz | 2021/08/16 13:15 | Taiyo Yamanaka v Admir Kalender | 3-6,7-6,10-7 |
| ITF M15 Novi Sad | 2021/08/01 14:00 | Alex Knaff v Admir Kalender | 7-5,6-4 |
| ITF M15 Skopje | 2021/06/09 09:15 | Admir Kalender v Nicholas David Ionel | 2-6,6-3,0-6 |
| ITF M15 Skopje | 2021/06/08 07:30 | Aziz Ouakaa v Admir Kalender | 3-6,3-6 |
| ITF M15 Skopje | 2021/06/07 08:00 | Admir Kalender v Luka Pavlovic | 6-1,6-4 |
| ITF M15 Skopje | 2021/06/03 08:00 | Alexandar Lazarov v Admir Kalender | 6-1,6-3 |