| Pékin, Chine | 09/29 08:10 | 64 | [254] Zhe Li v Troicki, Viktor [131] | 5-7,4-6 | |
| Pékin, Chine | 09/29 08:00 | 64 | Jaziri, Malek v Troicki, Viktor | Cancelled | |
| ATP Shenzhen | 09/26 07:00 | 26 | [52] Albert Ramos-Vinolas v Troicki, Viktor [131] | 7-6,4-6,7-6 | |
| ATP Shenzhen | 09/24 08:10 | 25 | [81] Garcia-Lopez, Guillermo v Troicki, Viktor [131] | Retired | |
| St. Petersburg, Russia | 09/16 10:25 | 64 | [115] Troicki, Viktor v Lucas Miedler [223] | 2-6,3-6 | |
| Challenger Chicago | 09/04 16:55 | 25 | [175] Fratangelo, Bjorn v Troicki, Viktor [102] | 2-6,6-2,6-0 | |
| US Open, New York, USA | 08/28 17:25 | 23 | [102] Troicki, Viktor v Tennys Sandgren [61] | 3-6,4-6,2-6 | |
| ATP - Stuttgart | 06/12 10:30 | 25 | [91] Troicki, Viktor v Lopez, Feliciano [33] | Retired | |
| Open de France | 05/27 09:00 | - | Troicki, Viktor v Grigor Dimitrov | Cancelled | |
| ATP Rome Qual | 05/13 10:20 | 46 | Frances Tiafoe v Troicki, Viktor | Walkover | |
| ATP Rome Qual | 05/12 08:00 | 45 | [105] Fabbiano, Thomas v Troicki, Viktor [87] | 5-7,3-6 | |
| ATP Madrid Qual | 05/06 12:20 | 46 | [71] Troicki, Viktor v Mikhail Kukushkin [96] | 6-7,1-6 | |
| ATP Madrid Qual | 05/05 16:00 | 45 | [71] Troicki, Viktor v Pedro Cachin [300] | 4-6,6-3,7-5 | |
| ATP Istanbul | 05/02 12:30 | 26 | [71] Troicki, Viktor v Dutra Silva, Rogerio [121] | 2-6,3-6 | |
| ATP Istanbul | 04/30 11:25 | 25 | [71] Troicki, Viktor v Bernard Tomic [210] | 3-6,6-0,7-5 | |
| Budapest, Hongrie | 04/24 11:00 | 25 | [74] Maximilian Marterer v Troicki, Viktor [71] | 3-6,6-4,6-4 | |
| ATP Monte Carlo Qual | 04/14 12:35 | 45 | [68] Troicki, Viktor v Stakhovsky, Sergiy [117] | 1-6,3-6 | |
| ATP - Marrakech | 04/10 09:00 | - | Troicki, Viktor v Jan-Lennard Struff | Cancelled | |
| ATP - Miami | 03/22 15:00 | 23 | [46] Denis Shapovalov v Troicki, Viktor [68] | 6-3,6-7,7-6 | |
| ATP - Indian Wells | 03/09 21:35 | 23 | Troicki, Viktor v Marton Fucsovics | 6-7,1-6 | |
| ATP - Dubaï | 02/26 15:00 | 25 | Baghdatis, Marcos v Troicki, Viktor | 7-5,6-2 | |
| ATP - Rotterdam | 02/14 15:30 | 26 | BERDYCH T. v Troicki, Viktor | 6-1,6-2 | |
| ATP - Rotterdam | 02/13 12:55 | 25 | Jan-Lennard Struff v Troicki, Viktor | 6-1,6-7,2-6 | |
| Sofia, Bulgaria | 02/09 16:00 | 27 | Stan Wawrinka v Troicki, Viktor | 6-1,7-6 | |
| Sofia, Bulgaria | 02/08 12:50 | 26 | Istomin, Denis v Troicki, Viktor | 6-7,6-1,6-7 | |
| Sofia, Bulgaria | 02/06 17:40 | 25 | Gulbis, Ernests v Troicki, Viktor | 3-6,7-6,3-6 | |
| Open d'Australie | 01/17 07:45 | 24 | Kyrgios, Nick v Troicki, Viktor | 7-5,6-4,7-6 | |
| Open d'Australie | 01/15 03:20 | 23 | Troicki, Viktor v Alex Bolt | 6-7,4-6,6-2,6-3,6-4 | |
| Sydney, Australia | 01/07 03:00 | 25 | Dolgopolov, Aleksandr v Troicki, Viktor | 6-3,6-7,7-5 | |
| ATP - Doha | 01/02 15:30 | 25 | Troicki, Viktor v Matteo Berrettini | 6-4,6-7,4-6 |