[78] Mackenzie McDonald 6-4,3-6,4-6 Tennys Sandgren [61] 2018-07-07 03:30
Stadium: Court 2 Round: 45 Ground: Hardcourt indoor
Head to Head
| Challenger Fairfield | 2017/10/13 19:50 | Mackenzie McDonald v Tennys Sandgren | 7-6,6-2 |
| Challenger Tiburon | 2017/09/30 21:25 | Mackenzie McDonald v Tennys Sandgren | 6-7,6-7 |
| Challenger Aptos | 2017/08/09 21:50 | Mackenzie McDonald v Tennys Sandgren | 1-6,2-6 |
| Challenger Savannah | 2017/05/01 23:10 | Tennys Sandgren v Mackenzie McDonald | 6-4,3-6,6-4 |
| Challenger Leon | 2017/03/29 20:45 | Tennys Sandgren v Mackenzie McDonald | 2-6,7-6,6-3 |
| Challenger Cary | 2016/09/13 16:00 | Tennys Sandgren v Mackenzie McDonald | 6-4,6-3 |
Home History
| Wimbledon | 2018/07/06 17:05 | Guido Pella v Mackenzie McDonald | 4-6,4-6,6-7 |
| Wimbledon | 2018/07/04 12:15 | Mackenzie McDonald v Nicolas Jarry | 7-6,5-7,3-6,6-2,11-9 |
| Wimbledon | 2018/07/02 12:50 | Ricardas Berankis v Mackenzie McDonald | 6-4,6-7,3-6,6-7 |
| ATP Queens Qual | 2018/06/17 10:30 | Julien Benneteau v Mackenzie McDonald | 7-5,6-3 |
| ATP Queens Qual | 2018/06/16 12:25 | Bjorn Fratangelo v Mackenzie McDonald | 3-6,7-5,2-6 |
| ATP Hertogenbosch | 2018/06/15 09:00 | Jeremy Chardy v Mackenzie McDonald | 6-4,4-6,7-6 |
| ATP Hertogenbosch | 2018/06/14 14:20 | Alex Bolt v Mackenzie McDonald | 4-6,5-7 |
| ATP Hertogenbosch | 2018/06/12 12:00 | Mackenzie McDonald v Andreas Seppi | 6-4,6-2 |
Away History
| Wimbledon | 2018/07/03 16:35 | Tennys Sandgren v Novak Djokovic | 3-6,1-6,2-6 |
| French Open | 2018/05/29 09:00 | Hubert Hurkacz v Tennys Sandgren | 6-2,6-2,3-6,6-3 |
| ATP Geneva | 2018/05/24 14:10 | Tennys Sandgren v Fabio Fognini | 6-7,6-7 |
| ATP Geneva | 2018/05/23 15:45 | Mirza Basic v Tennys Sandgren | 3-6,2-6 |
| ATP Geneva | 2018/05/21 11:50 | Andreas Haider-Maurer v Tennys Sandgren | 6-1,1-6,0-6 |
| ATP Madrid | 2018/05/06 11:05 | Denis Shapovalov v Tennys Sandgren | 6-1,6-4 |
| ATP Estoril | 2018/04/30 16:50 | Tennys Sandgren v Frances Tiafoe | 6-3,6-7,6-7 |
| ATP Barcelona | 2018/04/23 09:00 | Tennys Sandgren v Malek Jaziri | 4-6,4-6 |