Portillo, Valentin
Current rating: 1472
Record: 6-8
| Grand Prix Buenos Aires 2015 (DTK standard) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 63 | Viera, Exequiel (1500) | Lost 1-2 | -171451 |
| 2standard | 168 | Gonzalez, Fernando David (1527) | Won 2-1 | +191470 |
| 3standard | 216 | Asereny, Emilio (1501) | Won 2-1 | +191489 |
| 4standard | 152 | Riquelme, Pablo (1518) | Won 2-0 | +181507 |
| 5standard | 88 | Guarienti De Oliveira, Bruno (1593) | Lost 1-2 | -161491 |
| 6standard | 158 | Maimone, Maximiliano (1471) | Lost 1-2 | -191472 |
| average opponent: 1518record: 3-3 | new rating: 1472 | |||
| Grand Prix Buenos Aires 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 168 | Parrado, Cristobal (1740) | Won 2-1 | +221522 |
| 2standard | 180 | Disipio, Martin (1518) | Won 2-0 | +181540 |
| 3standard | 27 | Montoto, Rodrigo (1500) | Lost 0-2 | -191521 |
| 4standard | 109 | Pereira, Otavio (1624) | Lost 1-2 | -161505 |
| 5standard | 300 | Juarez Villegas, Nicolas (1500) | Won 2-0 | +181523 |
| 6standard | 189 | Reis, Bernardo (1482) | Lost 1-2 | -191504 |
| 7standard | 225 | Solis Flores, Roberto Alexis (1492) | Lost 1-2 | -181486 |
| 8standard | 234 | Soliz, Oscar (1484) | Lost 0-2 | -181468 |
| average opponent: 1542record: 3-5 | new rating: 1468 | |||