Gu, John
Current rating: 1516
Record: 4-3
| Grand Prix Mexico City 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 3 | Cisneros, Edgar (1446) | Lost 0-2 | -191481 |
| 2sealed | 284 | Iniguez, Rodrigo (1482) | Won 2-1 | +181499 |
| 3sealed | 148 | Villagrana, Rene (1432) | Won 2-0 | +171516 |
| 4sealed | 116 | Hernandez, Daniel (1523) | Lost 1-2 | -181498 |
| 5sealed | 180 | Cedillo Rios, Moises (1499) | Won 2-0 | +181516 |
| 6sealed | 116 | Montiel Villedas, Alejandro (1517) | Won 1-0 | +181534 |
| 7sealed | 109 | Alvarado, Antonio (1518) | Lost 1-2 | -181516 |
| average opponent: 1488record: 4-3 | new rating: 1516 | |||