5 games · 2022–2026 · 5 classical · 0 online
Sandoval Mercado 12 draws2 Obregon Rivero
40.0% for Sandoval Mercado
Openings between them
| A41 | Rat Defense: English Rat | 2 | 50.0% |
| B52 | Sicilian Defense: Moscow Variation, Main Line | 1 | 0.0% |
| D35 | Queen's Gambit Declined: Exchange Variation, Positional Variation | 1 | 100.0% |
| E73 | King's Indian Defense: Semi-Averbakh System | 1 | 0.0% |
All games
| Obregon Rivero, J2446 | 1-0 | Sandoval Mercado, Carlos2422 | 19th American Continental | 2026 |
| Sandoval Mercado, Carlos2398 | ½-½ | Obregon Rivero, J2462 | III Aguascalientes Int | 2025 |
| Sandoval Mercado, Carlos2397 | ½-½ | Obregon Rivero, J2483 | ch-Mexico City 2023 | 2023 |
| Obregon Rivero, J2493 | 0-1 | Sandoval Mercado, Carlos2291 | LXVIII Mexican Open 2023 | 2023 |
| Obregon Rivero, J2536 | 1-0 | Sandoval Mercado, Carlos2289 | 8th ch-Iberoamericano | 2022 |