Stadium: Center Court Round: 25 Ground: Hardcourt outdoor
| Wimbledon Qual | 2018/06/25 10:00 | Alexander Ward v Darian King | 4-6,7-5,6-0 |
| Challenger Ilkley | 2018/06/22 14:50 | Darian King v Oscar Otte | 4-6,6-4,1-6 |
| Challenger Ilkley | 2018/06/20 13:00 | Sebastian Ofner v Darian King | 6-7,4-6 |
| Challenger Ilkley | 2018/06/18 14:05 | Darian King v Jack Draper | 6-4,6-2 |
| French Open Qual | 2018/05/21 15:05 | Bernard Tomic v Darian King | 7-6,6-0 |
| Challenger Leon | 2018/04/25 16:00 | Ante Pavic v Darian King | 6-4,6-2 |
| Challenger Leon | 2018/04/23 20:00 | Manuel Sanchez v Darian King | 4-6,6-7 |
| Challenger Guadalajara | 2018/04/20 21:00 | Pedja Krstin v Darian King | 6-2,1-6,6-2 |
| Wimbledon Qual | 2018/06/26 17:25 | Dennis Novak v Donald Young | 6-2,7-5 |
| Wimbledon Qual | 2018/06/25 14:35 | Max Purcell v Donald Young | 3-6,2-6 |
| Challenger Ilkley | 2018/06/19 11:30 | Donald Young v Jason Kubler | 4-6,6-7 |
| ATP Hertogenbosch Qual | 2018/06/09 10:15 | Donald Young v Miliaan Niesten | 4-6,2-6 |
| French Open Qual | 2018/05/21 08:00 | Alexandre Muller v Donald Young | 7-6,6-3 |
| Challenger Savannah | 2018/05/01 21:35 | Cristian Garin v Donald Young | 6-3,4-6,6-1 |
| Challenger Sarasota | 2018/04/18 20:30 | Stefan Kozlov v Donald Young | 6-4,6-4 |
| Challenger Sarasota | 2018/04/16 15:45 | Federico Coria v Donald Young | 4-6,6-7 |