Mamani, Nilson
Current rating: 1447
Record: 2-5-1
| Grand Prix Santiago 2015 (ORI limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 33 | Flores, Gustavo (1430) | Lost 0-2 | -191481 |
| 2sealed | 212 | Huenchullan, Esteban (1489) | Won 2-1 | +181499 |
| 3sealed | 155 | Orellana, Sebastian (1500) | Won 2-0 | +181517 |
| 4sealed | 85 | Orellana, Eduardo (1598) | Lost 0-2 | -171500 |
| 5sealed | 184 | Concha, Cesar (1503) | Draw 1-1 | 01500 |
| 6sealed | 214 | Da Bouza, Rafael (1557) | Lost 0-2 | -171483 |
| 7sealed | 199 | Ferran, Guillermo (1477) | Lost 0-2 | -181465 |
| 8sealed | 171 | Vargas, Eduardo (1440) | Lost 0-2 | -181447 |
| average opponent: 1499record: 2-5-1 | new rating: 1447 | |||