Stadium: Hard Court 2 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Cancun | 2019/12/08 17:00 | Sebastian Eguez v Daniel O'Neill | 6-1,6-1 |
| ITF M15 Cancun | 2019/12/01 19:00 | Pedro Gabriel Rodrigues v Daniel O'Neill | 6-2,6-4 |
| ITF M15 Cancun | 2019/11/17 18:00 | Wally Thayne v Daniel O'Neill | 6-1,7-5 |
| ITF Ireland F1 Qual | 2018/07/30 12:25 | Jordan McKeown v Daniel O'Neill | 6-0,7-6 |
| ITF Ireland F1 Qual | 2017/07/16 13:00 | Andrew Ponder v Daniel O'Neill | 7-5,6-4 |
| Adriatic Tennis Series | 2020/06/15 16:45 | Carlos Gomez-Herrera v Josip Krstanovic | 1-6,6-3,10-5 |
| ITF M25 Sunderland | 2020/02/24 10:00 | Josip Krstanovic v Patrick Foley | 1-6,1-6 |
| ITF M25 Sunderland | 2020/02/23 11:30 | Mats Rosenkranz v Josip Krstanovic | 6-3,1-6,8-10 |
| ITF M25 Glasgow | 2020/02/16 15:15 | Wojciech Marek v Josip Krstanovic | 6-4,6-4 |
| ITF M25 Barnstaple | 2020/02/09 12:45 | Josip Krstanovic v Tom Hands | 1-6,6-1,16-18 |
| ITF M25 Shrewsbury | 2019/09/24 12:20 | Luke Johnson v Josip Krstanovic | 6-1,6-4 |
| ITF M25 Shrewsbury | 2019/09/23 13:15 | Daniel Little v Josip Krstanovic | 4-6,4-6 |
| ITF M25 Shrewsbury | 2019/09/23 08:30 | Luke Henley v Josip Krstanovic | 7-6,1-6,9-11 |