Buenfil, Guillermo R
Current rating: 1555
Record: 9-6
| Grand Prix Guadalajara 2013 (DGM standard) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 102 | Ruiz, Alan J (1500) | Won 2-1 | +181557 |
| 3standard | 15 | Garza, Gabriel (1536) | Lost 0-2 | -191538 |
| 4standard | 54 | Olvera Castellanos, Cesar (1516) | Won 2-0 | +181556 |
| 5standard | 55 | Rivas Garcia, Isaias (1536) | Lost 1-2 | -181538 |
| 6standard | 79 | jimnez, rodrigo (1533) | Won 2-1 | +181556 |
| 7standard | 53 | Reyes Padilla, Orlando (1535) | Won 2-1 | +171573 |
| 8standard | 24 | Cravioto, Andres (1540) | Lost 0-2 | -181555 |
| average opponent: 1528record: 4-3 | new rating: 1555 | |||
| Grand Prix Mexico City 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 76 | Ruiz Alvarado, Alejandro (1500) | Won 2-0 | +181518 |
| 2sealed | 12 | Ramos Garcia, Daniel (1518) | Lost 1-2 | -181500 |
| 3sealed | 219 | Medina Lopez, Carlos Alberto (1457) | Won 2-1 | +171517 |
| 4sealed | 176 | Hedan, Josselin (1518) | Won 2-1 | +181535 |
| 5sealed | 48 | Pedrera Irabien, Gonzalo Alberto (1536) | Won 2-1 | +181553 |
| 6sealed | 63 | Pichon, Elie (1816) | Lost 1-2 | -131540 |
| 7sealed | 69 | Barrera Acevedo, Marco (1520) | Lost 0-2 | -181522 |
| 8sealed | 156 | Alcazar Juarez, Mauricio (1518) | Won 2-1 | +171539 |
| average opponent: 1548record: 5-3 | new rating: 1539 | |||