Guevarra, Warren
Current rating: 1384
Record: 4-11
| Grand Prix Manila 2008 (Lorwyn block) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 69 | Santos, Clark (1554) | Lost 0-2 | -161393 |
| 2block | 258 | Soliman, Arigo Adrian (1482) | Lost 1-2 | -161377 |
| 3block | 259 | Fernandez, Eduardo V (1462) | Lost 0-2 | -171360 |
| 4block | 292 | Tolledo, Harvey T (1359) | Won 2-0 | +181378 |
| 5block | 273 | Ibeas, Emmanuel (1464) | Lost 1-2 | -161362 |
| 6block | 274 | Villano, Michael Joseph (1413) | Lost 0-2 | -171345 |
| 7block | 250 | Ramilo, Ryan P (1428) | Won 2-0 | +191364 |
| 8block | 222 | Salvador, Jose Maria (1446) | Won 2-1 | +201384 |
| average opponent: 1451record: 3-5 | new rating: 1384 | |||
| Grand Prix Manila 2006 (GPT limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 55 | Espiritu, Michael (1500) | Lost 1-2 | -181482 |
| 2sealed | 104 | Santiago, Vergel (1482) | Lost 0-2 | -181464 |
| 3sealed | 142 | Seo, Asako (1384) | Lost 0-2 | -191445 |
| 4sealed | 170 | Villano, Michael Joseph (1446) | Lost 1-2 | -181427 |
| 5sealed | 172 | Clelo, Kevin Osial (1428) | Won 1-0 | +181445 |
| 6sealed | 148 | Jaro, Jhay (1446) | Lost 0-2 | -181427 |
| 7sealed | 140 | Lagasca, Vicente (1428) | Lost 1-2 | -181409 |
| average opponent: 1445record: 1-6 | new rating: 1409 | |||