del Valle, Oscar Uriel
Current rating: 1495
Record: 16-17
| Regional Championships Mexico City 2023 Cycle 4 (pioneer) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 66 | Siles, Emmanuel (1630) | Won 2-1 | +201547 |
| 2pioneer | 49 | Pompa, Jorge (1575) | Lost 1-2 | -171530 |
| 3pioneer | 39 | Flores Calderon, Eduardo (1475) | Lost 0-2 | -191511 |
| 4pioneer | 73 | Zuniga, Cristian (1625) | Lost 0-2 | -161495 |
| top | average opponent: 1576record: 1-3 | new rating: 1495 | ||
| Regional Championships Mexico City 2023 Cycle 3 (pioneer) | starting rating: 1563 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 17 | Urena, Luis Diego (1535) | Lost 0-2 | -191544 |
| 2pioneer | 51 | Alva, Ramses (1481) | Won 2-1 | +171561 |
| 3pioneer | 41 | Castillo, Alex (1499) | Lost 0-2 | -191542 |
| 4pioneer | 61 | Becerra Reyes, Carlos (1599) | Won 2-1 | +191561 |
| 5pioneer | 33 | Siles, Emmanuel (1654) | Lost 1-2 | -161545 |
| 6pioneer | 57 | Avila Gutierrez, Marlon Jacob (1707) | Won 2-1 | +211566 |
| 7pioneer | 43 | Pane, Franco (1505) | Lost 1-2 | -201546 |
| 8pioneer | 48 | Anzaldo, Juan (1482) | Lost 0-2 | -191527 |
| top | average opponent: 1558record: 3-5 | new rating: 1527 | ||
| Grand Prix Mexico City 2016 (OGW limited) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 195 | Narvaez Hurtado, Jose (1422) | Won 2-1 | +151562 |
| 2sealed | 101 | Ortega, Carlos (1492) | Lost 0-2 | -191543 |
| 3sealed | 188 | Velazquez, Diego (1444) | Won 2-0 | +161559 |
| 4sealed | 195 | Dominguez, Ruy (1610) | Lost 0-2 | -171542 |
| 5sealed | 221 | Vargas Estrada, Armando (1499) | Won 2-1 | +181560 |
| 6sealed | 198 | Avitua, Fernando (1642) | Won 2-1 | +191579 |
| 7sealed | 86 | Zuniga, Alfredo (1622) | Won 2-1 | +191598 |
| 8sealed | 63 | Ling, Matthew (1680) | Lost 1-2 | -171581 |
| 9sealed | 151 | KU, JOSE (1545) | Lost 0-2 | -181563 |
| top | average opponent: 1551record: 5-4 | new rating: 1563 | ||
| Grand Prix Mexico City 2015 (FRF limited) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 183 | Hernandez, Eduardo (1420) | Won 2-0 | +161560 |
| 2sealed | 59 | Pinto Alayola, Enrique (1508) | Won 2-1 | +171577 |
| 3sealed | 96 | Renner, Mark (1577) | Lost 0-2 | -181559 |
| 4sealed | 83 | Gatica, Miguel (1906) | Lost 0-2 | -121547 |
| top | average opponent: 1603record: 2-2 | new rating: 1547 | ||
| Grand Prix Mexico City 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 229 | Morales, Jose (1530) | Won 2-0 | +191519 |
| 2sealed | 133 | Castelan Morales, Angel (1501) | Won 2-0 | +171536 |
| 3sealed | 95 | Avila Gutierrez, Marlon Jacob (1778) | Lost 1-2 | -131523 |
| 4sealed | 170 | Hernandez Sanchez, Moi (1519) | Won 2-1 | +171540 |
| 5sealed | 70 | Elizondo, Hugo (1542) | Won 2-1 | +181558 |
| 6sealed | 52 | Dominguez Roldan, Fernando De Jesus (1801) | Won 2-1 | +231581 |
| 7sealed | 17 | Rios Ruiz, Miguel Tomas (1631) | Lost 0-2 | -171564 |
| 8sealed | 44 | Bojorquez, Wilfredo (1459) | Lost 1-2 | -201544 |
| top | average opponent: 1595record: 5-3 | new rating: 1544 | ||