| Newport Beach, USA | 01/26 18:00 | 28 | [196] Schnur, Brayden v Young, Donald [231] | 6-2,3-6,7-6 | |
| Newport Beach, USA | 01/25 22:55 | 27 | [231] Young, Donald v Collin Altamirano [309] | 6-2,6-1 | |
| Newport Beach, USA | 01/24 20:40 | 26 | [263] Aragone, JC v Young, Donald [231] | 3-6,4-6 | |
| Newport Beach, USA | 01/22 19:45 | 25 | [231] Young, Donald v Noah Rubin [140] | 6-4,6-3 | |
| Newport Beach, USA | 01/21 18:00 | 24 | [453] Patrick Kypson v Young, Donald [231] | 3-6,2-6 | |
| Open d'Australie | 01/09 00:50 | 44 | [232] Young, Donald v Lopez Perez [213] | 7-5,1-6,2-6 | |
| Challenger Noumea | 01/05 02:00 | 28 | [135] Noah Rubin v Young, Donald [248] | 6-2,6-3 | |
| Challenger Noumea | 01/04 02:35 | 27 | [238] Gleb Sakharov v Young, Donald [248] | 7-5,3-6,1-6 | |
| Challenger Noumea | 01/02 23:30 | 26 | Young, Donald v Rubin Statham | 7-5,6-1 | |
| Challenger Noumea | 01/01 23:00 | 25 | [212] Kimmer Coppejans v Young, Donald [248] | 6-3,1-6,6-7 | |
| Challenger Noumea | 12/31 06:00 | 24 | [248] Young, Donald v Renzo Olivo [331] | 7-6,6-3 | |
| Challenger Fairfield | 10/09 18:55 | 25 | [264] Young, Donald v Lloyd Harris [113] | 6-7,6-4,5-7 | |
| Challenger Cary | 09/12 20:20 | 26 | [239] Young, Donald v Opelka, Reilly [143] | 1-6,6-7 | |
| Challenger Cary | 09/12 00:10 | 25 | [265] Jan Choinski v Young, Donald [239] | 7-6,2-6,1-6 | |
| Challenger Chicago | 09/07 19:30 | 27 | [246] Young, Donald v Opelka, Reilly [173] | 6-3,2-6,6-7 | |
| Challenger Chicago | 09/06 17:30 | 26 | [246] Young, Donald v Smith, John-Patrick [220] | 6-3,6-4 | |
| Challenger Chicago | 09/05 18:35 | 25 | [88] Vasek Pospisil v Young, Donald [246] | 2-6,2-6 | |
| US Open, New York, USA | 08/28 00:50 | 23 | [3] DEL POTRO J.M. v Young, Donald [246] | 6-0,6-3,6-4 | |
| US Open, New York, USA | 08/24 15:00 | 46 | [120] Polansky, Peter v Young, Donald [242] | 5-7,6-1,3-6 | |
| US Open, New York, USA | 08/23 15:00 | 45 | [242] Young, Donald v Bolelli, Simone [144] | 0-6,6-4,6-2 | |
| US Open, New York, USA | 08/21 22:55 | 44 | [152] Moraing, Mats v Young, Donald [242] | 2-6,6-7 | |
| Washington, USA | 08/02 00:20 | 25 | [234] Young, Donald v Kei Nishikori [20] | 3-6,4-6 | |
| Washington, USA | 07/31 23:00 | 24 | [198] Stan Wawrinka v Young, Donald [234] | 4-6,7-6,6-7 | |
| ATP Washington Qual | 07/29 16:25 | 64 | [121] Jason Jung v Young, Donald [230] | Retired | |
| ATP Washington Qual | 07/28 15:10 | 45 | [488] Thomas, Danny v Young, Donald [230] | 6-7,6-4,2-6 | |
| Atlanta, USA | 07/26 16:00 | 26 | [55] Ebden, Matthew v Young, Donald [230] | 6-4,6-4 | |
| Atlanta, USA | 07/23 23:00 | 25 | [117] Karlovic, Ivo v Young, Donald [230] | 6-2,6-7,6-7 | |
| Newport, USA | 07/16 16:20 | 25 | [232] Young, Donald v Vasek Pospisil [98] | 6-7,1-6 | |
| Winnetka, USA | 07/10 20:55 | 25 | [160] Darian King v Young, Donald [210] | 6-3,5-7,6-1 | |
| Wimbledon Qual | 06/26 17:25 | 45 | [172] Dennis Novak v Young, Donald [179] | 6-2,7-5 |