Borba, John
Current rating: 1482
Record: 3-4
| Grand Prix San Francisco 2007 (Time Spiral block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 159 | Bacher, Isaac (1500) | Lost 0-2 | -181482 |
| 2block | 198 | Li, Wei (1482) | Lost 1-2 | -181464 |
| 3block | 288 | Ruiz, Alex (1464) | Won 2-0 | +181482 |
| 4block | 281 | Bailey, Nate K (1482) | Won 2-1 | +181500 |
| 5block | 176 | Pauly, Christopher M (1508) | Lost 0-2 | -181482 |
| 6block | 224 | Valencia, Nicolas (1482) | Lost 0-2 | -181464 |
| 7block | 191 | Kho, Richard (1464) | Won 2-0 | +181482 |
| average opponent: 1483record: 3-4 | new rating: 1482 | |||