Guevara, Sergio
Current rating: 1513
| Grand Prix Santiago 2015 (ORI limited) | starting rating: 1553 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 143 | Franco, Andre (1619) | Lost 1-2 | -171536 |
| 2sealed | 206 | Gomez, Ramiro (1499) | Won 2-0 | +171553 |
| 3sealed | 248 | Perez Osan, Ramiro (1506) | Lost 1-2 | -191534 |
| 4sealed | 263 | Madariaga, Joaquin (1480) | Won 2-0 | +171551 |
| 5sealed | 245 | Pini, Pablo (1548) | Lost 1-2 | -181533 |
| 6sealed | 249 | Vejar, Fernando (1420) | Lost 0-2 | -201513 |
| top | average opponent: 1512record: 2-4 | new rating: 1513 | ||
| Grand Prix Santiago 2014 (KTK standard) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 162 | Ballon, Pablo (1494) | Won 2-0 | +181534 |
| 2standard | 144 | Zah, Adrian (1770) | Won 2-1 | +221556 |
| 3standard | 100 | Marzocca, Juan Pablo (1452) | Won 2-1 | +161572 |
| 4standard | 18 | Fernandez Savoy, Ramiro (1582) | Won 2-0 | +181590 |
| 5standard | 14 | Meneses, Axel (1539) | Won 2-1 | +181608 |
| 6standard | 12 | Sologuren, David (1609) | Lost 0-2 | -181590 |
| 7standard | 39 | Ruz, Walter (1546) | Lost 0-2 | -191571 |
| 8standard | 79 | Castro Dias, Hugo (1556) | Lost 1-2 | -181553 |
| top | average opponent: 1568record: 5-3 | new rating: 1553 | ||
| Grand Prix Santiago 2011 (ISD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 261 | Roca Suarez, Diego (1543) | Won 2-0 | +191519 |
| 2sealed | 76 | Gozzo, Alessandro (1536) | Lost 0-2 | -181501 |
| 3sealed | 234 | Cejas, Diego Esteban (1500) | Won 2-1 | +181519 |
| 4sealed | 149 | Igor, Jonathan (1518) | Won 2-0 | +181537 |
| 5sealed | 93 | Hidalgo Araya, Felipe (1536) | Lost 1-2 | -181519 |
| 6sealed | 112 | Perry, Tony d (1518) | Won 2-0 | +181537 |
| 7sealed | 122 | Sotomayor, Diego (1463) | Won 2-0 | +171554 |
| 8sealed | 80 | Vargas Carreras, Juan (1577) | Lost 0-2 | -181536 |
| 9sealed | 86 | Luks, Luis (1444) | Lost 1-2 | -201516 |
| top | average opponent: 1515record: 5-4 | new rating: 1516 | ||