| ATP - Paris | 11/03 15:00 | 24 | [36] Adrian Mannarino v Dusan Lajovic [26] | 7-6,6-3 | |
| ATP - Viena | 10/27 16:55 | 25 | [26] Dusan Lajovic v Lorenzo Sonego [42] | 4-6,3-6 | |
| ATP - Viena | 10/27 13:00 | 25 | Dusan Lajovic v Diego Schwartzman | Cancelled | |
| ATP - Antuérpia | 10/19 14:30 | 25 | [24] Dusan Lajovic v Frances Tiafoe [61] | 3-6,6-7 | |
| ATP - Sardenha | 10/14 14:15 | 26 | [74] Laslo Djere v Dusan Lajovic [24] | 6-4,7-5 | |
| Open de França | 10/01 14:50 | 24 | [24] Dusan Lajovic v Kevin Anderson [118] | 2-6,4-6,6-4,6-3,3-6 | |
| Open de França | 09/29 10:15 | 23 | [24] Dusan Lajovic v Gianluca Mager [89] | 6-4,7-6,4-6,6-1 | |
| ATP - Hamburgo | 09/25 11:30 | 27 | [24] Dusan Lajovic v Stefanos Tsitsipas [6] | 6-7,2-6 | |
| ATP - Hamburgo | 09/24 10:30 | 26 | [16] Karen Khachanov v Dusan Lajovic [24] | 1-6,2-6 | |
| ATP - Hamburgo | 09/22 19:05 | 25 | [24] Dusan Lajovic v Adrian Mannarino [38] | 6-4,6-1 | |
| ATP - Roma | 09/18 17:00 | 26 | [25] Dusan Lajovic v Rafael Nadal [2] | 1-6,3-6 | |
| ATP - Roma | 09/17 12:05 | 25 | [19] Milos Raonic v Dusan Lajovic [25] | 6-7,6-4,2-6 |