| 2026-09-30 | Kinoshita Group Japan Open Tennis Championships | R16 | Petr Nouza / Michael Venus (と Nikola Mektic) | 5-7 7-6 10-7 | 勝 |
| 2026-09-30 | Kinoshita Group Japan Open Tennis Championships | SF | Simone Bolelli / Andrea Vavassori (と Nikola Mektic) | 7-5 7-6 | 勝 |
| 2026-09-30 | Kinoshita Group Japan Open Tennis Championships | F | Théo Arribagé / Albano Olivetti (と Nikola Mektic) | 7-6 5-7 10-6 | 勝 |
| 2026-09-30 | Kinoshita Group Japan Open Tennis Championships | QF | Alejandro Tabilo / Luca van Assche (と Nikola Mektic) | 7-6 7-6 | 勝 |
| 2026-08-30 | US Open | R32 | Ryan Seggerman / Patrik Trhac (と Nikola Mektic) | 3-6 6-3 7-6 | 勝 |
| 2026-08-30 | US Open | R64 | Filip Pieczonka / Bart Stevens (と Nikola Mektic) | 6-1 7-6 | 勝 |
| 2026-08-30 | US Open | R16 | Simone Bolelli / Andrea Vavassori (と Nikola Mektic) | 6-4 6-7 6-7 | 敗 |
| 2026-08-23 | Winston-Salem Open | F | Petr Nouza / Neil Oberleitner (と Nikola Mektic) | 5-7 4-6 | 敗 |
| 2026-08-23 | Winston-Salem Open | SF | Théo Arribagé / Manuel Guinard (と Nikola Mektic) | 4-6 6-3 10-4 | 勝 |
| 2026-08-23 | Winston-Salem Open | QF | Robert Galloway / André Göransson (と Nikola Mektic) | 6-3 2-6 10-4 | 勝 |
| 2026-08-23 | Winston-Salem Open | R16 | Francisco Cabral / Jj Tracy (と Nikola Mektic) | 7-6 7-5 | 勝 |
| 2026-08-13 | Cincinnati Open | R32 | Robert Cash / Brandon Nakashima (と Nikola Mektic) | 7-5 6-4 | 勝 |
| 2026-08-02 | Omnium Banque Nationale présenté par Rogers | R32 | Guido Andreozzi / Manuel Guinard (と Nikola Mektic) | 4-6 2-6 | 敗 |
| 2026-07-27 | Mubadala DC Open | F | Julian Cash / Lloyd Glasspool (と Nikola Mektic) | 3-6 4-6 | 敗 |
| 2026-07-27 | Mubadala DC Open | SF | Hugo Nys / Édouard Roger-Vasselin (と Nikola Mektic) | 7-6 7-6 | 勝 |
| 2026-07-27 | Mubadala DC Open | QF | Christian Harrison / Neal Skupski (と Nikola Mektic) | 7-6 6-4 | 勝 |
| 2026-07-27 | Mubadala DC Open | R16 | Rafael Jodar / Brandon Nakashima (と Nikola Mektic) | 6-4 6-4 | 勝 |
| 2026-06-29 | Wimbledon | QF | Thanasi Kokkinakis / Aleksandar Kovacevic (と Nikola Mektic) | 6-7 3-6 | 敗 |
| 2026-06-29 | Wimbledon | R16 | Simone Bolelli / Andrea Vavassori (と Nikola Mektic) | 7-6 4-6 6-4 | 勝 |
| 2026-06-29 | Wimbledon | R32 | Ivan Liutarevich / Miguel Ángel Reyes-Varela (と Nikola Mektic) | 6-7 7-6 7-6 | 勝 |
| 2026-06-29 | Wimbledon | R64 | Marcelo Melo / Andrés Molteni (と Nikola Mektic) | 6-1 4-6 6-2 | 勝 |
| 2026-06-21 | Vanda Pharmaceuticals Mallorca Championships | R16 | N.Sriram Balaji / Marcelo Demoliner (と Nikola Mektic) | 6-4 6-7 11-13 | 敗 |
| 2026-06-15 | HSBC Championships | R16 | Christian Harrison / Neal Skupski (と Nikola Mektic) | 5-7 3-6 | 敗 |
| 2026-05-17 | Gonet Geneva Open | R16 | Vasil Kirkov / Bart Stevens (と Nikola Mektic) | 7-5 5-7 10-12 | 敗 |
| 2026-05-06 | Internazionali BNL d'Italia | SF | Marcel Granollers / Horacio Zeballos (と Nikola Mektic) | 7-6 5-7 2-10 | 敗 |
| 2026-05-06 | Internazionali BNL d'Italia | QF | Alexander Erler / Lucas Miedler (と Nikola Mektic) | 6-4 7-5 | 勝 |
| 2026-05-06 | Internazionali BNL d'Italia | R16 | Robert Cash / Jj Tracy (と Nikola Mektic) | 6-4 3-6 10-8 | 勝 |
| 2026-05-06 | Internazionali BNL d'Italia | R32 | Francisco Cerundolo / Luciano Darderi (と Nikola Mektic) | 7-6 6-2 | 勝 |
| 2026-04-22 | Mutua Madrid Open | R32 | Pablo Llamas Ruiz / Benjamin Winter Lopez (と Nikola Mektic) | 3-6 7-6 10-12 | 敗 |
| 2026-04-13 | Barcelona Open Banc Sabadell | R16 | Daniel Rincon / Oriol Roca Batalla (と Nikola Mektic) | 6-7 6-7 | 敗 |