Macas, David
Current rating: 1429
Record: 10-15-2
| Grand Prix Manila 2015 (KTK standard) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 174 | Cheng, Francisco (1500) | Won 2-0 | +191456 |
| 2standard | 295 | Barron, Alex V (1519) | Lost 0-2 | -161440 |
| 3standard | 483 | Casabona, Mark Anthony (1490) | Lost 1-2 | -181422 |
| 4standard | 602 | Tan, Emerson (1483) | Lost 0-2 | -161406 |
| 5standard | 574 | Abawan, Reynaldo (1467) | Draw 1-1 | +11407 |
| 6standard | 543 | Garde, Jose Maria Antonio (1463) | Won 2-0 | +191426 |
| 7standard | 436 | Santiago, Emerson (1481) | Lost 0-2 | -171409 |
| 8standard | 419 | Brinas, Richard (1464) | Draw 1-1 | +11410 |
| 9standard | 377 | Ronquillo, Juan Carlo (1462) | Won 2-1 | +191429 |
| top | average opponent: 1481record: 3-4-2 | new rating: 1429 | ||
| Grand Prix Manila 2012 (AVR standard) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 266 | Cohun, Andrew T (1554) | Lost 0-2 | -161454 |
| 2standard | 415 | Mogul, Angelo Paulo (1474) | Won 2-1 | +181472 |
| 3standard | 222 | Sim, Kris (1499) | Lost 0-2 | -171455 |
| 4standard | 454 | Gumaru, Brian Lloyd (1481) | Lost 1-2 | -181437 |
| top | average opponent: 1502record: 1-3 | new rating: 1437 | ||
| Grand Prix Manila 2010 (ROE standard) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 162 | hidalgo, Patrick Shane (1500) | Lost 0-1 | -181489 |
| 2standard | 273 | Cunanan, Charles Leo F (1482) | Lost 1-2 | -181471 |
| 3standard | 440 | Garcia, Jason Paul (1464) | Won 2-1 | +181489 |
| 4standard | 375 | Guevarra, Melvin M (1482) | Lost 0-2 | -181471 |
| 5standard | 440 | perez, mark (1464) | Won 2-0 | +181489 |
| 6standard | 377 | Manipis, Ronnaldo (1483) | Lost 1-2 | -191470 |
| top | average opponent: 1479record: 2-4 | new rating: 1470 | ||
| Grand Prix Manila 2008 (Lorwyn block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 224 | Ecap, Raymund M (1500) | Won 2-0 | +181518 |
| 2block | 75 | Baeyens, Mark (1601) | Won 2-0 | +201538 |
| 3block | 69 | Bulatao, Jeanno Paolo (1536) | Won 2-0 | +171555 |
| 4block | 1 | Siagian, Yohannes (1482) | Won 2-0 | +171572 |
| 5block | 31 | Perez, Rico Vincent (1557) | Lost 0-1 | -181554 |
| 6block | 75 | Saito, Tomoharu (1956) | Lost 0-2 | -111543 |
| 7block | 58 | Ladines, Christopher F (1554) | Lost 0-2 | -181525 |
| 8block | 121 | someros, rommel (1533) | Lost 1-2 | -181507 |
| top | average opponent: 1590record: 4-4 | new rating: 1507 | ||