De Guzman, Basil
Current rating: 1432
Record: 11-16-3
| Grand Prix Manila 2012 (AVR standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 286 | Co, Sherdon (1463) | Draw 1-1 | 01463 |
| 2standard | 286 | Jalbuena, Ruel (1485) | Won 2-0 | +181481 |
| 3standard | 171 | Tan, Gerald D (1518) | Lost 1-2 | -171464 |
| 4standard | 330 | Cariaso, Dave (1515) | Won 2-1 | +191483 |
| 5standard | 232 | Jaro, Ogie (1615) | Lost 0-1 | -161467 |
| 6standard | 307 | Estrella, Luis T (1500) | Lost 1-2 | -171450 |
| 7standard | 355 | Penachos, Philippe I (1482) | Lost 0-2 | -171433 |
| 8standard | 358 | Gaddi, Dennis P (1429) | Lost 0-2 | -181415 |
| 9standard | 331 | Bartolome, Alvin Velasco (1409) | Won 2-1 | +171432 |
| top | average opponent: 1491record: 3-5-1 | new rating: 1432 | ||
| Grand Prix Manila 2010 (ROE standard) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 315 | Chingtoco, Paul Eugene (1500) | Draw 1-1 | +11439 |
| 2standard | 252 | dela pena, sander (1500) | Lost 0-1 | -171422 |
| 3standard | 349 | Rili, Rowena B (1481) | Won 2-0 | +191441 |
| 4standard | 310 | Guasch, Eli (1464) | Won 1-0 | +191460 |
| 5standard | 206 | Mascarinas, Larry A (1518) | Draw 1-1 | +11461 |
| 6standard | 283 | Calabio, Jude (1518) | Won 2-0 | +191480 |
| 7standard | 202 | Dayag, Jean Henri (1555) | Lost 0-2 | -171463 |
| top | average opponent: 1505record: 3-2-2 | new rating: 1463 | ||
| Grand Prix Manila 2008 (Lorwyn block) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 163 | Ortenero, Eli (1500) | Lost 0-2 | -171410 |
| 2block | 183 | Fernandez, Eduardo V (1482) | Won 2-0 | +201430 |
| 3block | 210 | Gaffud, Nathaniel (1556) | Lost 0-2 | -161414 |
| 4block | 204 | Sumayo, Schlimper Geor (1481) | Won 2-1 | +191433 |
| 5block | 174 | Singun, Ronald (1503) | Won 2-0 | +201453 |
| 6block | 146 | Quidayan, John Neil (1516) | Won 2-0 | +191472 |
| 7block | 121 | Pangasinan, Jay (1522) | Lost 0-2 | -171455 |
| 8block | 113 | Santos, Ravann Gorospe (1518) | Lost 0-2 | -171438 |
| top | average opponent: 1510record: 4-4 | new rating: 1438 | ||
| Grand Prix Manila 2006 (GPT limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 57 | Clelo, Kevin Osial (1500) | Won 2-0 | +181518 |
| 2sealed | 69 | Palao, Hajji (1518) | Lost 1-2 | -181500 |
| 3sealed | 123 | Alba, Alberto Jr. (1500) | Lost 1-2 | -181482 |
| 4sealed | 115 | Dimalanta, Lawrence (1511) | Lost 1-2 | -171465 |
| 5sealed | 150 | San Antonio, Sherwin (1464) | Lost 1-2 | -181447 |
| 6sealed | 147 | Seo, Asako (1370) | Lost 0-2 | -201427 |
| top | average opponent: 1477record: 1-5 | new rating: 1427 | ||