Monaco: Monte Carlo - Singles - Main |
| 1/32-finals | Musetti L. | Fritz T. | 2:0 (6:4, 6:4) | details | 07.04.2024 |
USA: Miami - Singles - Main |
| 1/32-finals | Seyboth Wild T. | Fritz T. | 2:0 (6:3, 6:4) | details | 23.03.2024 |
USA: Indian Wells - Singles - Main |
| 1/8-finals | Fritz T. | Rune H. | 1:2 (6:2, 62:7, 3:6) | details | 14.03.2024 |
| 1/16-finals | Fritz T. | Baez S. | 2:0 (6:2, 6:2) | details | 11.03.2024 |
| 1/32-finals | Fritz T. | Tabilo A. | 2:0 (7:62, 6:2) | details | 09.03.2024 |
Mexico: Acapulco - Singles - Main |
| 1/16-finals | Arnaldi M. | Fritz T. | 2:1 (6:4, 4:6, 6:3) | details | 27.02.2024 |
USA: Delray Beach - Singles - Main |
| Final | Fritz T. | Paul T. | 2:0 (6:2, 6:3) | details | 19.02.2024 |
| Semi-finals | Fritz T. | Giron M. | 2:0 (7:68, 6:2) | details | 18.02.2024 |
| Quarter-finals | Fritz T. | Hijikata R. | 2:0 (6:3, 6:3) | details | 17.02.2024 |
| 1/8-finals | Fritz T. | Borges N. | 2:0 (7:65, 6:4) | details | 15.02.2024 |
World: Davis Cup - World Group - Singles - Qualification |
| | Orlov V. | Fritz T. | 0:2 (3:6, 4:6) | details | 02.02.2024 |
| | Krutykh O. | Fritz T. | CAN. | details | 02.02.2024 |
| | Bielinskyi V. | Fritz T. | CAN. | details | 01.02.2024 |
Australia: Australian Open - Singles - Main |
| Quarter-finals | Djokovic N. | Fritz T. | 3:1 (7:63, 4:6, 6:2, 6:3) | details | 23.01.2024 |
| 1/8-finals | Fritz T. | Tsitsipas S. | 3:1 (7:63, 5:7, 6:3, 6:3) | details | 21.01.2024 |
| 1/16-finals | Fritz T. | Marozsan F. | 3:1 (3:6, 6:4, 6:2, 6:2) | details | 19.01.2024 |
| 1/32-finals | Fritz T. | Gaston H. | 3:0 (6:0, 6:3, 6:1) | details | 17.01.2024 |
| 1/64-finals | Fritz T. | Diaz Acosta F. | 3:2 (4:6, 6:3, 3:6, 6:2, 6:4) | details | 14.01.2024 |
Australia: United Cup - Singles - Main |
| | Fritz T. | De Minaur A. | 0:2 (4:6, 2:6) | details | 01.01.2024 |
| | Fritz T. | Norrie C. | 2:0 (7:65, 6:4) | details | 31.12.2023 |
United Arab Emirates: World Tennis League - Singles - Main |
| | Medvedev D. | Fritz T. | 0:1 (3:6, 1:0) | details | 23.12.2023 |
| | Fritz T. | Dimitrov G. | 0:1 (3:6) | details | 22.12.2023 |
| | Ruud C. | Fritz T. | 1:0 (6:1) | details | 21.12.2023 |
France: Paris - Singles - Main |
| 1/16-finals | Fritz T. | Altmaier D. | WO. | details | 01.11.2023 |
| 1/32-finals | Fritz T. | Baez S. | 2:0 (6:1, 6:4) | details | 30.10.2023 |
Switzerland: Basel - Singles - Main |
| 1/8-finals | Fritz T. | Shevchenko A. | 1:2 (7:67, 66:7, 65:7) | details | 26.10.2023 |
| 1/16-finals | Fritz T. | Purcell M. | 2:0 (7:67, 7:64) | details | 25.10.2023 |
Japan: Tokyo - Singles - Main |
| 1/8-finals | Fritz T. | Mochizuki S. | 1:2 (6:0, 4:6, 62:7) | details | 19.10.2023 |
| 1/16-finals | Fritz T. | Norrie C. | 2:0 (6:4, 6:3) | details | 17.10.2023 |
China: Shanghai - Singles - Main |
| 1/16-finals | Schwartzman D. | Fritz T. | 2:1 (6:4, 3:6, 7:65) | details | 09.10.2023 |
| 1/32-finals | Watanuki Y. | Fritz T. | 1:2 (62:7, 7:66, 4:6) | details | 07.10.2023 |
World: Laver Cup - Singles - Main |
| | Ruud C. | Fritz T. | CAN. | details | 24.09.2023 |
| | Rublev A. | Fritz T. | 0:2 (2:6, 63:7) | details | 23.09.2023 |
USA: US Open - Singles - Main |
| Quarter-finals | Fritz T. | Djokovic N. | 0:3 (1:6, 4:6, 4:6) | details | 05.09.2023 |