| Apr 11, 2026 | De Waele | 0–1 | Jens | Round 9: De Waele, Warre - Jens, Jelmer | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Mar 28, 2026 | Jens | 0–1 | Slagboom | Round 6: Jens, Jelmer - Slagboom, Leandro | Italian Game: Paris Defense | |
| Mar 8, 2026 | Dinanath | ½–½ | Jens | KNSB competitie 2025/2026 | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Mar 1, 2026 | Jens | 1–0 | Weidenhoefer | 2. Bundesliga Nord | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Feb 7, 2026 | Jens | 1–0 | Raats | Round 7: Jens, Jelmer - Raats, Joppe | Italian Game: Giuoco Pianissimo, Normal | |
| Dec 26, 2025 | Jens | ½–½ | Tondivar | Round 5: Jens, Jelmer - Tondivar, Babak | Bishop's Opening: Berlin Defense | |
| Nov 22, 2025 | Van de Griendt | 0–1 | Jens | Round 4: Van de Griendt, Jan Willem - Jens, Jelmer | Catalan Opening: Open Defense | |
| Nov 7, 2025 | Kuipers | ½–½ | Jens | KNSB competitie 2025/2026 | Sicilian Defense: Richter-Rauzer Variation | |
| Oct 4, 2025 | Jens | 0–1 | Buckels | Round 2: Jens, Jelmer - Buckels, Valentin | Bishop's Opening: Berlin Defense | |
| Sep 20, 2025 | Van Hesselingen | 0–1 | Jens | Round 1: Van Hesselingen, Guido - Jens, Jelmer | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Jul 20, 2025 | Jens | ½–½ | Ermeni | Biel Chess Festival 2025 Blitz | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 20, 2025 | Karthik | 1–0 | Jens | Biel Chess Festival 2025 Blitz | Nimzo-Larsen Attack: Indian Variation | |
| Jul 20, 2025 | Jens | 1–0 | Bai | Biel Chess Festival 2025 Blitz | Italian Game: Hungarian Defense | |
| Jul 20, 2025 | Yash Abhijit Patil | 0–1 | Jens | Biel Chess Festival 2025 Blitz | Zukertort Opening: Dutch Variation | |
| Jul 20, 2025 | Jens | 1–0 | Clausen | Biel Chess Festival 2025 Blitz | Scandinavian Defense: Blackburne Gambit | |
| Jul 20, 2025 | Harish | ½–½ | Jens | Biel Chess Festival 2025 Blitz | Dutch Defense: Leningrad Variation, Warsaw Variation | |
| Jul 20, 2025 | Jens | 1–0 | Tkhoruk | Biel Chess Festival 2025 Blitz | Caro-Kann Defense: Two Knights Attack | |
| Jul 20, 2025 | Gao | 1–0 | Jens | Biel Chess Festival 2025 Blitz | Sicilian Defense: Moscow Variation, Main Line | |
| Jul 20, 2025 | Jens | 1–0 | Jordan | Biel Chess Festival 2025 Blitz | Sicilian Defense: Najdorf Variation | |
| Jul 20, 2025 | Jens | 0–1 | Ho | Biel Chess Festival 2025 Blitz | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Jul 20, 2025 | Chen | 0–1 | Jens | Biel Chess Festival 2025 Blitz | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Jul 20, 2025 | Jens | 1–0 | Singhal | Biel Chess Festival 2025 Blitz | Sicilian Defense: Dragon Variation, Yugoslav Attack | |
| Jul 20, 2025 | Saxena | ½–½ | Jens | Biel Chess Festival 2025 Blitz | Dutch Defense: Leningrad Variation, Warsaw Variation | |
| May 13, 2025 | Jens | 1–0 | Los | Round 9: Jens, Jelmer - Los, Sander | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Apr 5, 2025 | Jens | 1–0 | Mohammadi Nia | Round 8: Jens, Jelmer - Mohammadi Nia, Borna | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Mar 8, 2025 | Hilwerda | ½–½ | Jens | Round 7: Hilwerda, Jonas - Jens, Jelmer | Sicilian Defense: Classical Variation, Anti-Sozin Variation | |
| Oct 15, 2024 | Jens | ½–½ | Ten Hertog | Round 2: Jens, Jelmer - Ten Hertog, Hugo | Modern Defense | |
| Sep 21, 2024 | Beerdsen | 1–0 | Jens | Round 1: Beerdsen, Thomas - Jens, Jelmer | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Dec 14, 2024 | Pham | 1–0 | Jens | Round 5: Pham, Khoi - Jens, Jelmer | Dutch Defense: Leningrad Variation, Warsaw Variation | |
| Nov 9, 2024 | Roos | ½–½ | Jens | Round 3: Roos, Adrian - Jens, Jelmer | Dutch Defense: Raphael Variation | |
| Oct 9, 2022 | Jens | 0–1 | Erenberg | ECCC_22 | Caro-Kann Defense: Two Knights Attack | |
| Oct 7, 2022 | Huschenbeth | 1–0 | Jens | ECCC_22 | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations | |
| Oct 4, 2022 | Vidit | 1–0 | Jens | ECCC_22 | Dutch Defense: Hopton Attack | |
| Oct 3, 2022 | Jahncke | * | Jens | 37th European Club Cup | ? | |
