Mammana, Federico
Current rating: 1398
| Grand Prix Santiago 2017 (AKH standard) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 162 | Gutierrez, Javier (1459) | Won 2-1 | +191458 |
| 2standard | 71 | Cespedes, Cristian (1703) | Lost 1-2 | -141444 |
| 3standard | 228 | Sanchez, Daniel [CHL] (1793) | Lost 1-2 | -121432 |
| 4standard | 324 | Peralta, Leandro (1449) | Lost 1-2 | -181414 |
| 5standard | 294 | Rodriguez, Juan [CHL] (1481) | Lost 0-2 | -161398 |
| top | average opponent: 1577record: 1-4 | new rating: 1398 | ||
| Grand Prix Santiago 2016 (KLD standard) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 82 | Grangetto, Santiago (1533) | Lost 0-2 | -181536 |
| 3standard | 267 | Carballo, Jorge (1461) | Lost 1-2 | -191517 |
| 4standard | 312 | Ghio, Alexander (1483) | Lost 1-2 | -191498 |
| 5standard | 340 | Iturriaga, Mario (1461) | Lost 1-2 | -191479 |
| 6standard | 329 | Sanabria, Marcelo (1403) | Lost 0-2 | -191460 |
| 7standard | 302 | Albornoz, Luis (1318) | Lost 0-2 | -211439 |
| top | average opponent: 1443record: 0-6 | new rating: 1439 | ||
| Grand Prix Buenos Aires 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 111 | Fernandez, Matias (1445) | Won 2-1 | +171517 |
| 2standard | 122 | Arntz, Estevao Rudi (1651) | Won 2-1 | +201537 |
| 3standard | 123 | Gauna, Diego (1505) | Lost 1-2 | -181519 |
| 4standard | 105 | Cassano, Julian (1609) | Won 2-1 | +191538 |
| 5standard | 134 | Gimenez, Luciano (1538) | Won 2-1 | +181556 |
| 6standard | 81 | Vanni, Pedro (1553) | Won 2-0 | +181574 |
| 7standard | 30 | Jones, Matias (1531) | Won 2-0 | +181592 |
| 8standard | 10 | Baztan, Santiago A (1562) | Lost 0-2 | -191573 |
| 9standard | 56 | Perez, Saby Gabriel (1532) | Lost 1-2 | -191554 |
| top | average opponent: 1547record: 6-3 | new rating: 1554 | ||