| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. S Mareco vs A de Dovitiis |
| 1-0 | 48 | 2008 | Semi Arg Bs. As. | A06 Reti Opening |
| 2. S Mareco vs F Peralta |
| ½-½ | 30 | 2017 | TCh-ESP Div Honor | A06 Reti Opening |
| 3. S Mareco vs D Flores |
| 0-1 | 40 | 2017 | 92nd ch-ARG | A06 Reti Opening |
| 4. S Mareco vs V Chemin |
| 1-0 | 55 | 2017 | 1st AXPG Brazil Open | A06 Reti Opening |
| 5. S Mareco vs C H Umetsubo |
| 1-0 | 30 | 2017 | 1st AXPG Brazil Open | A06 Reti Opening |
| 6. S Mareco vs Adams |
| ½-½ | 31 | 2018 | Batumi Olympiad | A06 Reti Opening |
| 7. S Mareco vs Gurmeher Singh |
| 1-0 | 27 | 2019 | Dubai Open | A06 Reti Opening |
| 8. S Mareco vs N Delgado Ramirez |
| ½-½ | 21 | 2019 | Szmetan-Giardelli Super | A06 Reti Opening |
| 9. S Mareco vs Y Labussiere |
| 1-0 | 52 | 2023 | Floripa Open | A06 Reti Opening |
| 10. S Mareco vs I Tomeo |
| 1-0 | 34 | 2025 | Perez Chess Open | A06 Reti Opening |
Kibitzing
