Stadium: Court 22 Round: 25 Ground: Clay
| ITF Italy F28 | 2018/09/21 15:15 | Miljan Zekic v Billy Harris | 3-6,6-3,6-4 |
| ITF M15 Sharm El Sheikh | 2020/10/21 09:00 | Georgii Kravchenko v Miljan Zekic | 3-6,4-6 |
| ITF M25 Prague | 2020/09/18 11:10 | Christian Lindell v Miljan Zekic | 6-4,6-3 |
| ITF M25 Prague | 2020/09/17 11:55 | Miljan Zekic v Uladzimir Ignatik | 6-7,6-1,6-4 |
| ITF M25 Prague | 2020/09/16 09:45 | Miljan Zekic v Pawel Juszczak | 6-3,6-4 |
| ITF M25 Prague | 2020/09/15 07:50 | David Poljak v Miljan Zekic | 4-6,3-6 |
| ITF M25 Prague | 2020/09/14 10:30 | Nikolas Lahky v Miljan Zekic | 2-6,3-6 |
| ITF M25 Prague | 2020/09/13 13:30 | Tomas Jirousek v Miljan Zekic | 2-6,4-6 |
| Adriatic Tennis Series | 2020/06/17 13:30 | Miljan Zekic v Matija Pecotic | 5-7,5-7 |
| LTA British Tour | 2020/10/04 10:45 | Anton Matusevich v Billy Harris | 6-2,6-3 |
| LTA British Tour | 2020/10/03 13:30 | Julian Cash v Billy Harris | 6-7,3-6 |
| LTA British Tour | 2020/10/03 10:15 | Michael Shaw v Billy Harris | 3-6,2-6 |
| LTA British Tour | 2020/10/02 14:25 | Patrick Foley v Billy Harris | 2-6,6-7 |
| LTA British Tour | 2020/09/05 09:00 | Billy Harris v Arthur Fery | 4-6,6-7 |
| LTA British Tour | 2020/09/04 11:30 | Billy Harris v Felix Gill | 6-1,4-6,10-8 |
| UK Tennis Series | 2020/08/16 07:00 | Julian Cash v Billy Harris | 3-6,6-3,10-4 |
| UK Tennis Series | 2020/08/15 13:00 | Arthur Fery v Billy Harris | 1-6,6-1,5-10 |