| 8 ago 2026 | Van Osch, Mees 2338 | Leskovac, Nikola 2132 | 1-0 | B23 Defensa Siciliana: Closed | Split Chess Open 2026 | 80 | Ver |
| 7 ago 2026 | Leskovac, Nikola 2132 | Nikcevic, Nebojsa 2316 | ½-½ | C42 Defensa Petrov: French Attack | Split Chess Open 2026 | 31 | Ver |
| 26 jun 2026 | Leskovac, Nikola 2206 | Khoo-Thwe, Louis 2271 | 0-1 | A06 Apertura Zukertort | FIDE World Youth Chess Championships 2026 | O18 | 37 | Ver |
| 25 jun 2026 | Orujov, Farid 2326 | Leskovac, Nikola 2206 | ½-½ | B23 Defensa Siciliana: Closed | FIDE World Youth Chess Championships 2026 | O18 | 46 | Ver |
| 24 jun 2026 | Leskovac, Nikola 2206 | Park, Sihoo 2025 | ½-½ | B30 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack | FIDE World Youth Chess Championships 2026 | O18 | 33 | Ver |
| 23 jun 2026 | Soojay, Jorah 2100 | Leskovac, Nikola 2206 | 0-1 | B90 Defensa Siciliana: Najdorf Variation, Adams Attack | World Youth Chess Championship 2026 U18 Open | 43 | Ver |
| 20 jun 2026 | Leskovac, Nikola 2206 | Adilbekuly, Altair 2105 | 1-0 | B30 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack | FIDE World Youth Chess Championships 2026 | O18 | 28 | Ver |
| 17 jun 2026 | Mamedov, Edgar 2464 | Leskovac, Nikola 2206 | 1-0 | D35 Gambito de Dama rehusado: Exchange Variation, Positional Variation | FIDE World Youth Chess Championships 2026 | O18 | 33 | Ver |
| 8 jun 2026 | Leskovac, Nikola 2206 | Magold, Filip 2501 | 0-1 | B90 Defensa Siciliana: Najdorf Variation | FIDE World Youth Chess Championships 2026 | O18 | 38 | Ver |
| 16 may 2026 | Leskovac, Nikola 2170 | Djordjevic, Vuk 2380 | 0-1 | C15 Defensa Francesa: Winawer Variation, Delayed Exchange Variation | Serbian Individual Championship | Semifinals | Open | 53 | Ver |
| 15 may 2026 | Ciric, Pavle 2265 | Leskovac, Nikola 2170 | ½-½ | B84 Defensa Siciliana: Scheveningen Variation, Classical Variation | Serbian Individual Championship | Semifinals | Open | 112 | Ver |
| 15 may 2026 | Leskovac, Nikola 2170 | Bjelanovic, Mile 2014 | 1-0 | B90 Defensa Siciliana: Najdorf Variation, English Attack | Serbian Individual Championship | Semifinals | Open | 42 | Ver |
| 14 may 2026 | Gagic, Milan A 2332 | Leskovac, Nikola 2170 | 1-0 | B90 Defensa Siciliana: Najdorf Variation, English Attack, Anti-English | Serbian Individual Championship | Semifinals | Open | 64 | Ver |
| 13 may 2026 | Krivenko, Sergei 2282 | Leskovac, Nikola 2170 | ½-½ | D36 Gambito de Dama rehusado: Exchange Variation, Reshevsky Variation | Serbian Individual Championship | Semifinals | Open | 56 | Ver |
| 12 may 2026 | Leskovac, Nikola 2170 | Pap, Misa 2415 | ½-½ | B31 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | Serbian Individual Championship | Semifinals | Open | 33 | Ver |
| 12 may 2026 | Martic, Ivan 2288 | Leskovac, Nikola 2170 | 0-1 | B96 Defensa Siciliana: Najdorf Variation | Serbian Individual Championship | Semifinals | Open | 28 | Ver |
| 11 may 2026 | Leskovac, Nikola 2170 | Radovanovic, Nikola 2431 | 0-1 | A05 Apertura Zukertort: Nimzo-Larsen Variation | Serbian Individual Championship | Semifinals | Open | 50 | Ver |
| 26 abr 2026 | Hernandez Fernandez, Ramon A. 2211 | Leskovac, Nikola 2111 | ½-½ | B10 Defensa Caro-Kann | The Vojvodina Team Cup 2026 | 16 | Ver |
| 25 abr 2026 | Nagy, Aleksz M 2109 | Leskovac, Nikola 2111 | ½-½ | D02 Apertura de Peón de Dama: London System | The Vojvodina Team Cup 2026 | 35 | Ver |
| 22 abr 2026 | Leskovac, Nikola 2111 | Gusev, Mikhail 2340 | ½-½ | C77 Apertura Española (Ruy López): Morphy Defense, Anderssen Variation | The Vojvodina Team Cup 2026 | 30 | Ver |