| Washington, USA | 08/01 03:20 | 24 | [205] Smyczek, Tim v Young, Donald [58] | 6-4,3-6,4-6 | |
| Atlanta, USA | 07/26 21:20 | 26 | [51] Young, Donald v Lacko, Lukas [129] | 3-6,1-6 | |
| Atlanta, USA | 07/25 17:50 | 25 | [51] Young, Donald v Smyczek, Tim [194] | 6-4,6-2 | |
| Wimbledon, London, Great Britain | 07/05 17:25 | 24 | [2] Rafael Nadal v Young, Donald [43] | 6-4,6-2,7-5 | |
| Wimbledon, London, Great Britain | 07/03 11:55 | 23 | [43] Young, Donald v Istomin, Denis [72] | Retired | |
| Eastbourne, Great Britain | 06/29 10:30 | 27 | [4] Novak Djokovic v Young, Donald [47] | 6-2,7-6 | |
| Eastbourne, Great Britain | 06/28 12:55 | 26 | [47] Young, Donald v Donaldson, Jared [65] | 6-4,7-5 | |
| Eastbourne, Great Britain | 06/26 10:00 | 25 | [47] Young, Donald v Kyle Edmund [48] | 6-4,3-6,6-3 | |
| London, Great Britain | 06/23 12:45 | 27 | [7] Marin Cilic v Young, Donald [55] | 6-4,7-5 | |
| London, Great Britain | 06/21 11:00 | 26 | [39] Troicki, Viktor v Young, Donald [55] | 3-6,4-6 | |
| London, Great Britain | 06/19 13:45 | 25 | [55] Young, Donald v Kyrgios, Nick [20] | Retired | |
| French Open, Paris, France | 05/29 13:30 | 23 | [33] FERRER D. v Young, Donald [51] | 5-7,6-3,4-6,6-3,13-11 | |
| Lyon, France | 05/22 10:45 | 25 | [68] Chung, Hyeon v Young, Donald [51] | 6-2,6-3 | |
| Rome, Italy | 05/14 10:00 | 24 | [35] Verdasco, Fernando v Young, Donald [46] | 6-3,6-3 | |
| ATP - Houston | 04/12 17:50 | 25 | [42] Young, Donald v Thiago Monteiro [81] | 3-6,4-6 | |
| ATP - Miami | 03/28 14:50 | 26 | [40] Fabio Fognini v Young, Donald [51] | 6-0,6-4 | |
| ATP - Miami | 03/26 18:25 | 25 | [39] Benoit Paire v Young, Donald [51] | 6-7,4-6 | |
| ATP - Miami | 03/25 01:55 | 24 | [51] Young, Donald v Lucas Pouille [15] | 6-2,6-4 | |
| ATP - Miami | 03/22 18:00 | 23 | [51] Young, Donald v Brown, Dustin [78] | 6-3,1-6,6-2 | |
| ATP - Indian Wells | 03/15 18:00 | 26 | [60] Young, Donald v Kei Nishikori [5] | 2-6,4-6 | |
| ATP - Indian Wells | 03/14 18:00 | 25 | [15] Lucas Pouille v Young, Donald [60] | 4-6,6-1,3-6 | |
| ATP - Indian Wells | 03/12 22:05 | 24 | [60] Young, Donald v Querrey, Sam [26] | 6-3,3-6,6-3 | |
| ATP - Indian Wells | 03/11 00:40 | 23 | [60] Young, Donald v Stefan Kozlov [116] | 7-5,7-6 | |
| ATP - Acapulco | 03/01 22:00 | 26 | [63] Young, Donald v Kyrgios, Nick [17] | 2-6,4-6 | |
| ATP - Acapulco | 02/28 22:00 | 25 | [41] Bernard Tomic v Young, Donald [63] | Retired | |
| ATP - Delray Beach | 02/25 20:00 | 28 | [21] Sock, Jack v Young, Donald [69] | 6-4,7-6 | |
| ATP - Delray Beach | 02/24 15:00 | 27 | Darcis, Steve v Young, Donald | Walkover | |
| ATP - Delray Beach | 02/23 19:30 | 26 | Taylor Fritz v Young, Donald | 6-4,3-6,4-6 | |
| ATP - Delray Beach | 02/21 19:30 | 25 | [69] Young, Donald v Karlovic, Ivo [20] | 7-6,7-6 | |
| ATP Memphis | 02/19 01:30 | 28 | [62] Harrison, Ryan v Young, Donald [81] | 6-4,6-4 |