Islas, Devir
Current rating: 1517
Record: 4-3
| Grand Prix Mexico City 2005 (Kamigawa block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 102 | Olmos Luna, Alvaro (1500) | Won 2-0 | +181518 |
| 2block | 10 | Sanchez Peralta, Archibal Raziel (1518) | Lost 0-2 | -181500 |
| 3block | 78 | Galvan, Carlos (1500) | Lost 1-2 | -181482 |
| 4block | 109 | Juarez Sanchez, Gerardo (1482) | Won 2-0 | +181500 |
| 5block | 72 | Garduno, Omar (1500) | Won 2-0 | +181518 |
| 6block | 78 | Urbina, Roberto (1518) | Won 2-1 | +181536 |
| 7block | 38 | Perez Bermudez, Alejandro (1504) | Lost 1-2 | -191517 |
| average opponent: 1503record: 4-3 | new rating: 1517 | |||