| Challenger Bratislava | 11/06 16:30 | 25 | [207] Filip Horansky v Marcos Baghdatis [124] | 3-6,4-6 | |
| Challenger Eckental | 10/30 16:15 | 25 | [413] Albano Olivetti v Marcos Baghdatis [127] | 7-6,3-6,6-3 | |
| ATP Beijing | 10/02 10:30 | 25 | [116] Marcos Baghdatis v Marco Cecchinato [22] | 6-1,4-6,5-7 | |
| ATP Chengdu | 09/25 10:55 | 25 | [92] Marcos Baghdatis v Malek Jaziri [63] | 6-7,6-1,2-6 | |
| ATP St Petersburg | 09/18 15:30 | 25 | Marcos Baghdatis v Lukas Lacko | Cancelled | |
| US Open | 08/30 19:10 | 24 | [17] Lucas Pouille v Marcos Baghdatis [93] | 6-7,6-4,6-4,6-3 | |
| US Open | 08/28 20:00 | 23 | [93] Marcos Baghdatis v Mikhail Youzhny [106] | Retired | |
| ATP Winston-Salem | 08/19 22:10 | 24 | [93] Marcos Baghdatis v Guillermo Garcia-Lopez [71] | 6-7,4-6 | |
| ATP Cincinnati Qual | 08/12 15:00 | 46 | [64] Dusan Lajovic v Marcos Baghdatis [93] | 2-6,6-2,6-3 | |
| ATP Cincinnati Qual | 08/11 17:25 | 45 | [93] Marcos Baghdatis v Feliciano Lopez [71] | 7-6,6-3 | |
| ATP Washington | 08/01 22:15 | 25 | [23] Hyeon Chung v Marcos Baghdatis [91] | 6-7,6-4,6-3 | |
| ATP Washington | 07/31 22:30 | 24 | [91] Marcos Baghdatis v Benoit Paire [55] | 6-3,3-6,6-2 | |
| ATP Atlanta | 07/27 16:00 | 27 | [55] Matthew Ebden v Marcos Baghdatis [95] | 6-3,6-2 | |
| ATP Atlanta | 07/26 17:25 | 26 | [95] Marcos Baghdatis v Frances Tiafoe [42] | 7-5,6-1 | |
| ATP Atlanta | 07/25 01:30 | 25 | [169] Alex Bolt v Marcos Baghdatis [95] | 4-6,1-6 | |
| ATP Newport | 07/17 16:25 | 25 | [96] Marcos Baghdatis v Gilles Muller [95] | 6-7,3-6 | |
| Wimbledon | 07/05 13:25 | 24 | [95] Marcos Baghdatis v Karen Khachanov [40] | 3-6,4-6,6-3,7-6,5-7 | |
| Wimbledon | 07/03 14:30 | 23 | [7] Dominic Thiem v Marcos Baghdatis [95] | Retired | |
| ATP Antalya | 06/25 13:20 | 25 | [155] Blaz Kavcic v Marcos Baghdatis [83] | 7-6,6-3 | |
| ATP Hertogenbosch | 06/12 09:00 | - | Bernard Tomic v Marcos Baghdatis | Cancelled | |
| French Open | 05/28 12:15 | 23 | [84] Marcos Baghdatis v Santiago Giraldo [315] | Retired | |
| ATP Geneva | 05/21 18:25 | 25 | [83] Marcos Baghdatis v Noah Rubin [204] | 6-7,4-6 | |
| ATP Munich | 04/30 11:00 | 25 | [118] Yannick Hanfmann v Marcos Baghdatis [80] | 6-2,6-4 | |
| ATP Budapest Qual | 04/21 11:55 | 26 | [81] Marcos Baghdatis v Hubert Hurkacz [185] | 2-6,4-6 | |
| Challenger St Brieuc | 03/31 14:35 | 28 | [82] Marcos Baghdatis v Constant Lestienne [234] | 5-7,1-6 | |
| Challenger St Brieuc | 03/30 16:40 | 27 | [82] Marcos Baghdatis v Matthias Bachinger [174] | 6-3,6-2 | |
| Challenger St Brieuc | 03/28 18:40 | 26 | [82] Marcos Baghdatis v Uladzimir Ignatik [209] | 1-6,6-2,6-3 | |
| Challenger St Brieuc | 03/27 17:10 | 25 | [82] Marcos Baghdatis v Andrea Arnaboldi [223] | 6-4,6-3 | |
| ATP Miami | 03/21 23:30 | 23 | [49] Jared Donaldson v Marcos Baghdatis [82] | 6-3,6-4 | |
| ATP Indian Wells | 03/15 05:00 | 26 | Marcos Baghdatis v Milos Raonic | Walkover |