Spain: Barcelona - Doubles - Main |
| Quarter-finals | Gonzalez M./Molteni A. | Koolhof W./Mektic N. | 2:0 (6:3, 7:61) | details | 18.04.2024 |
| 1/8-finals | Koolhof W./Mektic N. | Ram R./Salisbury J. | 2:0 (7:5, 6:4) | details | 17.04.2024 |
Monaco: Monte Carlo - Doubles - Main |
| 1/8-finals | Fritz T./Rune H. | Koolhof W./Mektic N. | 2:1 (4:6, 6:3, 12:10) | details | 09.04.2024 |
| 1/16-finals | Nys H./Zielinski J. | Koolhof W./Mektic N. | 1:2 (5:7, 7:5, 7:10) | details | 08.04.2024 |
USA: Miami - Doubles - Main |
| 1/8-finals | Smith J. P./Verbeek S. | Koolhof W./Mektic N. | 2:0 (6:3, 6:3) | details | 25.03.2024 |
| 1/16-finals | Erler A./Miedler L. | Koolhof W./Mektic N. | 0:2 (2:6, 2:6) | details | 24.03.2024 |
USA: Indian Wells - Doubles - Main |
| Final | Granollers M./Zeballos H. | Koolhof W./Mektic N. | 0:2 (62:7, 64:7) | details | 15.03.2024 |
| Semi-finals | Krawietz K./Puetz T. | Koolhof W./Mektic N. | 0:2 (2:6, 1:6) | details | 14.03.2024 |
| Quarter-finals | Koolhof W./Mektic N. | Dodig I./Krajicek A. | 2:1 (6:4, 69:7, 10:7) | details | 13.03.2024 |
| 1/8-finals | Seggerman R./Trhac P. | Koolhof W./Mektic N. | 0:2 (4:6, 66:7) | details | 12.03.2024 |
| 1/16-finals | Johnson S./Paul T. | Koolhof W./Mektic N. | 0:2 (2:6, 63:7) | details | 10.03.2024 |
United Arab Emirates: Dubai - Doubles - Main |
| 1/8-finals | Koolhof W./Mektic N. | Griekspoor T./Struff J-L. | 0:2 (3:6, 65:7) | details | 27.02.2024 |
Qatar: Doha - Doubles - Main |
| Quarter-finals | Murray J./Venus M. | Koolhof W./Mektic N. | 2:0 (6:4, 7:62) | details | 22.02.2024 |
| 1/8-finals | Koolhof W./Mektic N. | Mansouri S./Nawaf R. | 2:1 (3:6, 6:3, 10:8) | details | 21.02.2024 |
Netherlands: Rotterdam - Doubles - Main |
| Final | Koolhof W./Mektic N. | Haase R./Van De Zandschulp B. | 2:0 (6:3, 7:5) | details | 18.02.2024 |
| Semi-finals | Dodig I./Krajicek A. | Koolhof W./Mektic N. | 0:2 (5:7, 4:6) | details | 17.02.2024 |
| Quarter-finals | Erler A./Miedler L. | Koolhof W./Mektic N. | 0:2 (3:6, 65:7) | details | 16.02.2024 |
| 1/8-finals | Koolhof W./Mektic N. | Behar A./Pavlasek A. | 2:1 (6:3, 3:6, 10:8) | details | 13.02.2024 |
Australia: Australian Open - Doubles - Main |
| 1/8-finals | Koolhof W./Mektic N. | Bopanna R./Ebden M. | 0:2 (68:7, 64:7) | details | 22.01.2024 |
| 1/16-finals | Koolhof W./Mektic N. | Heliovaara H./Peers J. | 2:0 (6:1, 6:4) | details | 19.01.2024 |
| 1/32-finals | Koolhof W./Mektic N. | Doumbia S./Reboul F. | 2:1 (7:64, 2:6, 6:3) | details | 18.01.2024 |
New Zealand: Auckland - Doubles - Main |
| Final | Granollers M./Zeballos H. | Koolhof W./Mektic N. | 1:2 (3:6, 7:65, 7:10) | details | 12.01.2024 |
| Semi-finals | Doumbia S./Reboul F. | Koolhof W./Mektic N. | 1:2 (7:5, 65:7, 7:10) | details | 12.01.2024 |
| Quarter-finals | Koolhof W./Mektic N. | Gonzalez M./Molteni A. | 2:1 (6:0, 2:6, 12:10) | details | 11.01.2024 |
| 1/8-finals | Koolhof W./Mektic N. | Erler A./Miedler L. | 2:1 (6:4, 4:6, 10:7) | details | 09.01.2024 |
Australia: Brisbane - Doubles - Main |
| 1/8-finals | Purcell M./Thompson J. | Mektic N./Nys H. | 2:0 (6:3, 6:3) | details | 03.01.2024 |
Bulgaria: Sofia - Doubles - Main |
| Final | Cash J./Mektic N. | Escobar G./Nedovyesov A. | 1:2 (3:6, 6:3, 11:13) | details | 11.11.2023 |
| Semi-finals | Behar A./Pavlasek A. | Cash J./Mektic N. | 0:2 (5:7, 4:6) | details | 10.11.2023 |
| Quarter-finals | Cash J./Mektic N. | King E./Stalder R. | 2:0 (6:3, 6:3) | details | 09.11.2023 |
| 1/8-finals | Cash J./Mektic N. | Cacic N./Oswald P. | 2:1 (4:6, 6:1, 10:7) | details | 06.11.2023 |
Austria: Vienna - Doubles - Main |
| 1/8-finals | Mektic N./Peers J. | Arevalo M./Rojer J. | 1:2 (7:63, 4:6, 8:10) | details | 25.10.2023 |
Japan: Tokyo - Doubles - Main |
| 1/8-finals | Mektic N./Peers J. | Shimabukuro S./Watanuki Y. | 0:2 (4:6, 2:6) | details | 16.10.2023 |
China: Shanghai - Doubles - Main |
| 1/16-finals | Krawietz K./Puetz T. | Mektic N./Peers J. | 2:1 (6:4, 4:6, 10:5) | details | 08.10.2023 |
China: Beijing - Doubles - Main |
| 1/8-finals | Arevalo M./Mektic N. | Melo M./Zverev A. | 1:2 (6:2, 3:6, 9:11) | details | 28.09.2023 |
USA: US Open - Doubles - Main |
| 1/16-finals | Haase R./Mektic N. | McDonald M./Mies A. | 0:2 (4:6, 3:6) | details | 02.09.2023 |
| 1/32-finals | Haase R./Mektic N. | Cacic N./Cornea V. V. | 2:1 (6:3, 65:7, 7:66) | details | 30.08.2023 |
USA: Winston-Salem - Doubles - Main |
| 1/8-finals | Demoliner M./Middelkoop M. | Haase R./Mektic N. | 2:0 (6:4, 7:64) | details | 21.08.2023 |
USA: Cincinnati - Doubles - Main |
| Quarter-finals | Mektic N./Peers J. | Gonzalez M./Molteni A. | 0:2 (4:6, 4:6) | details | 18.08.2023 |
| 1/8-finals | Krawietz K./Puetz T. | Mektic N./Peers J. | 1:2 (5:7, 6:2, 11:13) | details | 17.08.2023 |
| 1/16-finals | Lammons N./Withrow J. | Mektic N./Peers J. | 1:2 (6:3, 66:7, 3:10) | details | 14.08.2023 |
Canada: Toronto - Doubles - Main |
| 1/16-finals | Lammons N./Withrow J. | Haase R./Mektic N. | 2:0 (6:2, 7:65) | details | 07.08.2023 |
USA: Washington - Doubles - Main |
| 1/8-finals | Gonzalez M./Molteni A. | Haase R./Mektic N. | 2:1 (65:7, 7:67, 10:8) | details | 31.07.2023 |
Germany: Hamburg - Doubles - Main |
| Quarter-finals | Haase R./Mektic N. | Gille S./Vliegen J. | 1:2 (7:62, 5:7, 9:11) | details | 27.07.2023 |
| 1/8-finals | Baez S./Zapata Miralles B. | Haase R./Mektic N. | 0:2 (4:6, 4:6) | details | 24.07.2023 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/8-finals | Mektic N./Pavic M. | Behar A./Pavlasek A. | 1:2 (4:6, 6:3, 5:7) | details | 11.07.2023 |
| 1/16-finals | Mektic N./Pavic M. | Cabral F./Matos R. | 2:0 (7:5, 7:63) | details | 10.07.2023 |
United Kingdom: Wimbledon - Mixed Doubles - Main |
| 1/8-finals | Mektic N./Pera B. | Pavic M./Kichenok L. | 1:2 (7:65, 64:7, 69:7) | details | 09.07.2023 |
| 1/16-finals | Cash J./Barnett A. | Mektic N./Pera B. | 1:2 (4:6, 7:65, 67:7) | details | 07.07.2023 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/32-finals | Mektic N./Pavic M. | Demoliner M./Middelkoop M. | 2:0 (7:65, 6:4) | details | 06.07.2023 |
United Kingdom: Eastbourne - Doubles - Main |
| Final | Dodig I./Krajicek A. | Mektic N./Pavic M. | 0:2 (4:6, 2:6) | details | 30.06.2023 |