Barrera, Roberto
Current rating: 1379
| Grand Prix Santiago 2014 (KTK standard) | starting rating: 1399 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 136 | Fernandes Ferraz, Diego (1720) | Lost 0-2 | -131386 |
| 3standard | 161 | Davids, Nicolas (1500) | Won 2-0 | +211407 |
| 4standard | 123 | Mellado, Cristian (1518) | Lost 1-2 | -161391 |
| 5standard | 161 | Mendez, Victor (1544) | Won 2-0 | +201411 |
| 6standard | 178 | Salinas Varela, Alvaro (1515) | Lost 0-2 | -161395 |
| 7standard | 169 | Torres, Juan Carlos (1504) | Lost 1-2 | -161379 |
| top | average opponent: 1550record: 2-4 | new rating: 1379 | ||
| Grand Prix Buenos Aires 2014 (BNG standard) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 167 | Gomez Gutierrez, Yonatan Gui (1500) | Draw 1-1 | 01447 |
| 2standard | 207 | Rodriguez, Hector (1472) | Lost 0-2 | -171430 |
| 3standard | 363 | Artigas, Martin (1482) | Won 2-0 | +191449 |
| 4standard | 283 | Guzman, Francisco (1518) | Lost 0-2 | -171432 |
| 5standard | 339 | Yocca, Maximiliano (1482) | Draw 1-1 | +11433 |
| 6standard | 326 | Perez, Alejandro (1481) | Lost 0-2 | -171416 |
| 7standard | 293 | Blanco, Juan Manuel (1464) | Lost 0-2 | -171399 |
| top | average opponent: 1486record: 1-4-2 | new rating: 1399 | ||
| Grand Prix Santiago 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 63 | Araya Vasquez, Alejandro (1500) | Lost 1-2 | -181482 |
| 2modern | 182 | Cambi, Ignacio (1482) | Won 2-0 | +181500 |
| 3modern | 198 | Hernandez Vasquez, Rafael (1546) | Lost 0-2 | -171483 |
| 4modern | 281 | Piotti, Lucas (1484) | Lost 0-2 | -181465 |
| 5modern | 306 | sepulveda, luis (1447) | Lost 0-2 | -181447 |
| top | average opponent: 1492record: 1-4 | new rating: 1447 | ||