| UTR Pro Tennis Series Zadar | 03/06 08:30 | - | Ilya Snitari v Petrovic, Danilo | 6-3,0-0 | |
| UTR Pro Tennis Series Zadar | 03/05 13:00 | - | Domagoj Biljesko v Petrovic, Danilo | 6-1,5-7,4-1 | |
| UTR Pro Tennis Series Zadar | 03/04 09:30 | - | Petrovic, Danilo v Janos Fekete | 7-5,5-2 | |
| UTR Pro Tennis Series Zadar | 03/02 09:00 | - | Petrovic, Danilo v Zmak, Deni | 6-7,5-6 | |
| UTR Pro Tennis Series Zadar | 03/01 14:30 | - | Petrovic, Danilo v Gostincar, Domen | 6-4,6-3 | |
| UTR Pro Tennis Series Zadar | 02/28 14:30 | - | Galik, Matej v Petrovic, Danilo | 2-6,6-2,1-6 | |
| ATP Stockholm | 11/06 11:00 | 14 | [135] Jozef Kovalik v Petrovic, Danilo [293] | 7-6,7-6 | |
| Bergamo, Italy | 11/01 13:00 | 25 | [121] Liam Broady v Petrovic, Danilo [293] | 6-3,3-6,6-3 | |
| Challenger Losinj | 10/18 11:30 | 25 | [278] Petrovic, Danilo v Mathias Bourgue [228] | Retired | |
| Challenger Sibiu | 09/27 10:20 | 25 | [197] Vit Kopriva v Petrovic, Danilo [207] | 7-5,7-5 | |
| Challenger Szczecin | 09/14 10:00 | 25 | [181] Petrovic, Danilo v Alex Rybakov [371] | 1-6,2-6 | |
| Challenger Banja Luka | 09/07 14:30 | 25 | Petrovic, Danilo v Marko Topo | 6-4,6-7,2-6 | |
| US Open, New York, USA | 08/24 15:00 | 14 | [177] Petrovic, Danilo v Jurij Rodionov [140] | 4-6,3-6 | |
| Challenger Trieste | 07/27 08:00 | 25 | Petrovic, Danilo v Andrea Pellegrino | Cancelled | |
| Hamburg, Germany | 07/10 09:00 | 14 | [222] Daniel Masur v Petrovic, Danilo [173] | 2-6,6-4,6-3 | |
| Challenger Salzburg | 07/08 09:00 | 26 | [173] Petrovic, Danilo v Cuevas, Pablo [84] | 1-6,4-6 | |
| Challenger Salzburg | 07/06 12:20 | 25 | [190] Gulbis, Ernests v Petrovic, Danilo [173] | 2-6,6-7 | |
| Wimbledon, London, Great Britain | 06/22 12:40 | 14 | Petrovic, Danilo v Felix Gill | 5-7,6-7 | |
| Challenger Biella | 06/01 10:35 | 25 | [165] Petrovic, Danilo v Jacopo Berrettini [302] | Retired | |
| French Open, Paris, France | 05/26 12:30 | 15 | [165] Petrovic, Danilo v Oscar Otte [152] | 1-6,5-7 | |
| French Open, Paris, France | 05/25 08:30 | 14 | [206] Mitchell Krueger v Petrovic, Danilo [165] | 6-3,3-6,2-6 | |
| Challenger - Rome | 04/29 08:00 | 26 | Petrovic, Danilo v Flavio Cobolli | 2-6,2-6 | |
| Challenger - Rome | 04/27 09:30 | 25 | [157] Petrovic, Danilo v Igor Sijsling [307] | 6-1,7-6 | |
| Belgrade, Serbia | 04/19 17:00 | 25 | [43] John Millman v Petrovic, Danilo [157] | 7-5,6-4 | |
| Challenger Belgrade | 04/14 08:45 | 25 | [238] Marco Trungelliti v Petrovic, Danilo [158] | 6-3,6-2 | |
| Challenger - Split | 04/09 09:00 | 27 | [161] Petrovic, Danilo v Andrea Collarini [213] | 2-6,3-6 | |
| Challenger - Split | 04/07 09:00 | 26 | [161] Petrovic, Danilo v Maximilian Marterer [214] | 6-1,6-3 | |
| Challenger - Split | 04/05 12:10 | 25 | [161] Petrovic, Danilo v Lukas Rosol [183] | 6-1,6-3 | |
| Marbella, Spain | 03/30 15:35 | 25 | [160] Petrovic, Danilo v Nikola Milojevic [148] | 6-3,3-6,4-6 | |
| ATP - Miami | 03/22 19:15 | 14 | [280] Zverev, Mischa v Petrovic, Danilo [160] | 7-6,6-2 |