Estádio: Center Court Round: 25 Ground: Hardcourt outdoor
| Challenger - Playford | 2018/12/31 03:05 | Luke Saville v Tobias Kamke | 0-6,6-3,1-6 |
| Challenger - Knoxville | 2018/11/08 15:00 | Bjorn Fratangelo v Tobias Kamke | 7-6,6-7,6-4 |
| Challenger - Knoxville | 2018/11/07 15:00 | Tobias Kamke v Marcel Granollers | 6-4,3-6,6-4 |
| Challenger - Charlottesville | 2018/10/31 19:15 | Peter Polansky v Tobias Kamke | 7-5,7-5 |
| Challenger - Charlottesville | 2018/10/29 21:05 | Tobias Kamke v Dominik Koepfer | 6-1,3-6,6-1 |
| Challenger - Tashkent | 2018/10/12 10:00 | Kamil Majchrzak v Tobias Kamke | 7-6,6-3 |
| Challenger - Tashkent | 2018/10/11 07:00 | Evgeny Karlovskiy v Tobias Kamke | 6-7,1-6 |
| Challenger - Tashkent | 2018/10/10 06:00 | Tobias Kamke v Mohamed Safwat | 6-0,7-5 |
| Challenger - Buenos Aires | 2018/11/16 20:25 | Pedja Krstin v Pablo Andujar | 5-7,4-6 |
| Challenger - Buenos Aires | 2018/11/13 14:30 | Juan Pablo Ficovich v Pedja Krstin | 6-3,3-6,6-7 |
| Challenger - Montevideo | 2018/11/07 23:00 | Pedja Krstin v Guido Pella | 6-1,3-6,5-7 |
| Challenger - Montevideo | 2018/11/06 15:00 | Federico Gaio v Pedja Krstin | 6-7,5-7 |
| Challenger - Guaiaquil | 2018/11/01 20:30 | Pedja Krstin v Guido Andreozzi | 4-6,2-6 |
| Challenger - Guaiaquil | 2018/10/31 18:00 | Paolo Lorenzi v Pedja Krstin | 6-7,2-6 |
| Challenger - Guaiaquil | 2018/10/29 19:45 | Pedja Krstin v Roberto Cid Subervi | 6-3,7-6 |
| Challenger - Lima | 2018/10/24 01:05 | Pedja Krstin v Federico Delbonis | 2-6,2-6 |