| 25 jun 2026 | Paiva, Donaldo 2189 | Simiyu Jadon 2142 | 1-0 | D00 Apertura de Peón de Dama: Accelerated London System | 2026 Africa Individual Chess Championships | 50 | Ver |
| 21 jun 2026 | Beukes, Dante M 2288 | Simiyu Jadon 2142 | 1-0 | B22 Defensa Siciliana: Alapin Variation, Barmen Defense | 2026 Africa Individual Chess Championships | 32 | Ver |
| 21 jun 2026 | Simiyu Jadon 2142 | Levitan, Caleb Levi 2295 | 0-1 | E04 Apertura Catalana: Open Defense | 2026 Africa Individual Chess Championships | 53 | Ver |
| 20 jun 2026 | Belouadah, Saad 2320 | Simiyu Jadon 2142 | 0-1 | D37 Gambito de Dama rehusado: Three Knights Variation | 2026 Africa Individual Chess Championships | 49 | Ver |
| 22 mar 2026 | Simiyu Jadon 2108 | Kaloki, Hawi 2143 | ½-½ | A08 Ataque Indio de Rey: Sicilian Variation | Mavens Open International Chess Championship 2026 | 38 | Ver |
| 22 mar 2026 | Ssegwanyi, Arthur 2330 | Simiyu Jadon 2108 | 0-1 | B47 Defensa Siciliana: Taimanov Variation, Bastrikov Variation | Mavens Open International Chess Championship 2026 | 53 | Ver |
| 20 mar 2026 | Plat, Vojtech 2457 | Simiyu Jadon 2108 | 1-0 | E14 Queen's Indian Defense, with e3 | Mavens Open International Chess Championship 2026 | 33 | Ver |
| 24 sep 2025 | Mpene Thuto 2003 | Simiyu Jadon 2136 | ½-½ | B23 Defensa Siciliana: Closed, Traditional | 2025 African Junior Chess Championship |Open | 23 | Ver |
| 23 sep 2025 | Simiyu Jadon 2136 | Mompel Ferruz, Xavier 2333 | ½-½ | B54 Defensa Siciliana: Modern Variations, Main Line | 2025 African Junior Chess Championship |Open | 66 | Ver |
| 20 sep 2025 | Simiyu Jadon 2136 | George Samir, David 2349 | ½-½ | B52 Defensa Siciliana: Moscow Variation, Main Line | 2025 African Junior Chess Championship |Open | 36 | Ver |
| 19 sep 2025 | Santos, Luther 2125 | Simiyu Jadon 2136 | 1-0 | D36 Gambito de Dama rehusado: Exchange Variation, Reshevsky Variation | 2025 African Junior Chess Championship |Open | 64 | Ver |
| 11 sep 2025 | Wafa, Hamed 2353 | Simiyu Jadon 2136 | 1-0 | B99 Defensa Siciliana: Najdorf Variation, Main Line | 2025 African Junior Chess Championship |Open | 56 | Ver |