Face à face
| ITF Egypt F3 | 2017/01/30 08:00 | Hajek, Petr v Lukas Klein | 3-6,6-7 |
Home History
| ITF Netherlands F4 | 2017/07/13 11:20 | Farquharson, Tom v Hajek, Petr | 6-2,7-6 |
| ITF Netherlands F4 | 2017/07/12 06:30 | Hajek, Petr v de Bakker, Thiemo | 6-5 |
| ITF Czech Republic F4 | 2017/07/05 08:00 | Hajek, Petr v Marek Gengel | 0-6,3-6 |
| ITF Czech Republic F4 | 2017/07/04 09:45 | Petr Nouza v Hajek, Petr | 5-7,1-6 |
| ITF Poland F2 | 2017/06/19 09:00 | Hajek, Petr v Chadaj, Adam | 3-6,4-6 |
| ITF Czech Republic F3 Qual | 2017/05/28 08:30 | Hajek, Petr v Paroulek, Tadeas | 3-6,5-7 |
| ITF Czech Republic F3 Qual | 2017/05/27 12:00 | Hajek, Petr v Vladusic, Nenad | 6-4,5-7,6-2 |
| ITF Hungary F3 | 2017/05/26 09:25 | Zsombor Piros v Hajek, Petr | 7-6,7-5 |
Away History
| ITF Czech Republic F5 Qual | 2017/07/08 08:00 | Lukas Klein v Sabanov, Ivan | 4-6,6-4,4-6 |
| ITF Portugal F9 | 2017/06/26 12:40 | Lukas Klein v Emil Ruusuvuori | 4-6,4-6 |
| ITF Portugal F9 | 2017/06/25 10:00 | Lukas Klein v Daniel Batista | 6-2,6-1 |
| ITF Portugal F8 | 2017/06/21 11:00 | Lukas Klein v Cabral, Francisco | 4-6,4-6 |
| ITF Portugal F8 Qual | 2017/06/19 09:00 | Lukas Klein v Leote Prata, Martim | 6-3,6-2 |
| ITF Portugal F8 Qual | 2017/06/18 10:00 | Lukas Klein v Salgado, Afonso | 6-1,4-6,6-2 |
| ITF Israel F10 | 2017/06/13 07:40 | Ovil, Orel v Lukas Klein | 7-5,6-4 |
| ITF Israel F10 | 2017/06/12 07:00 | Lukas Klein v Barkai, Yannai | 6-4,6-4 |