Sosa, Ernesto
Current rating: 1450
Record: 5-9-1
| Regional Championships Santiago 2023 Cycle 3 (pioneer) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 16 | Fernandez, Camilo (1698) | Lost 0-2 | -141455 |
| 2pioneer | 16 | Ocampo, Rodolfo (1643) | Won 2-1 | +211476 |
| 3pioneer | 16 | Chong, Cristian (1774) | Won 2-0 | +241500 |
| 4pioneer | 25 | Maturana, Cristopher (1454) | Lost 0-2 | -191481 |
| 5pioneer | 16 | Sam, Jimmy (1686) | Lost 1-2 | -141467 |
| 6pioneer | 16 | Pradenas Avila, Ernesto (1508) | Lost 0-2 | -181449 |
| 7pioneer | 16 | Vargas, Jorge (1470) | Draw 1-1 | +11450 |
| average opponent: 1605record: 2-4-1 | new rating: 1450 | |||
| Grand Prix Sao Paulo 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 114 | Jr Peyerl, Charles (1500) | Lost 0-2 | -181482 |
| 2modern | 403 | Garcia de Moura, Wilson Henrique (1520) | Won 2-0 | +191501 |
| 3modern | 427 | Rodrigues, Thiago (1820) | Lost 1-2 | -131488 |
| 4modern | 478 | Treuko, Nicholas (1419) | Lost 0-2 | -191469 |
| 5modern | 490 | Elizalde, Victor (1537) | Lost 0-2 | -171452 |
| 6modern | 499 | De Camargo, Jose (1449) | Won 2-0 | +181470 |
| 7modern | 467 | Poeta De Azevedo, Lucas (1401) | Won 2-0 | +171487 |
| 8modern | 375 | Neto, Vinicius (1485) | Lost 0-2 | -181469 |
| average opponent: 1516record: 3-5 | new rating: 1469 | |||