Pereira, Alejandro
Current rating: 1626
Record: 14-9-2
| Regional Championships Mexico City 2023 Cycle 4 (pioneer) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 22 | Aguero Culligan, Mauricio Enrique (1777) | Won 2-0 | +231503 |
| 2pioneer | 8 | Sinclair, Jaleel (1518) | Won 2-0 | +181521 |
| 3pioneer | 11 | Garcia, Maria Eva (1495) | Won 2-1 | +181539 |
| 4pioneer | 3 | Gordillo Cardona, Jose Eduardo (1555) | Won 2-0 | +181557 |
| 5pioneer | 3 | Sanchez Peralta, Archibal Raziel (1851) | Won 2-0 | +231580 |
| 6pioneer | 2 | Ramirez Sanchez, Emmanuel (1960) | Won 2-0 | +251605 |
| 7pioneer | 1 | Rangel Paez, Edgar Emmanuel (1579) | ID | 01605 |
| 8pioneer | 2 | Martinez, Nelson (1615) | ID | 01605 |
| Qpioneer | Solano, Jesus (1766) | Won 2-0 | +211626 | |
| Spioneer | Martinez, Nelson (1632) | Won 2-0 | +181644 | |
| Fpioneer | Rangel Paez, Edgar Emmanuel (1623) | Lost 0-2 | -181626 | |
| top | average opponent: 1670record: 8-1-2 | new rating: 1626 | ||
| Regional Championships Mexico City 2023 Cycle 3 (pioneer) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 44 | Moratto, Lucas Sebastian (1616) | Won 2-1 | +201516 |
| 2pioneer | 39 | Aldrete, Jaime (1518) | Lost 1-2 | -181498 |
| 3pioneer | 56 | Massot, Jordi (1498) | Won 2-0 | +181516 |
| 4pioneer | 13 | Castillo, Alex (1519) | Draw 1-1 | 01516 |
| 5pioneer | 29 | isaias, daniel (1517) | Lost 0-2 | -181498 |
| 6pioneer | 41 | De Luna, Rene (1480) | Draw 1-1 | 01498 |
| 7pioneer | 47 | de Jesus Martinez, Gerardo (1498) | Lost 0-2 | -181480 |
| top | average opponent: 1521record: 2-3-2 | new rating: 1480 | ||
| Regional Championships Mexico City 2023 (ONE standard) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 17 | Duque, Pablo (1674) | Won 2-1 | +221467 |
| 2standard | 4 | Ramirez Sanchez, Emmanuel (1859) | Won 2-1 | +251492 |
| 3standard | 6 | Mendez Aguilar, Rolando (1372) | Won 2-1 | +161508 |
| 4standard | 2 | Calzada Tovar, Jesus Adan (1576) | Lost 0-2 | -171491 |
| 5standard | 8 | Avila Gutierrez, Marlon Jacob (1680) | Lost 1-2 | -151476 |
| 6standard | 13 | Tenorio Carbajal, Luis Carlos (1551) | Won 2-1 | +201496 |
| top | average opponent: 1619record: 4-2 | new rating: 1496 | ||
| Regional Championships Mexico City 2022 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 36 | Nolacea Lopez, Jose Luis (1474) | Lost 0-2 | -181482 |
| 2pioneer | 41 | Cisneros, Marlon (1450) | Lost 0-2 | -191463 |
| 3pioneer | 46 | Heras, Alejandro (1468) | Lost 0-2 | -181445 |
| top | average opponent: 1464record: 0-3 | new rating: 1445 | ||