O'Connor, Walter Saint Michael
Current rating: 1421
| Grand Prix Manila 2015 (KTK standard) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 209 | Hoffman, John Lambert (1500) | Won 2-0 | +191471 |
| 2standard | 302 | Ramos, Edsel (1518) | Lost 1-2 | -181453 |
| 3standard | 347 | Castaneda, Juanito Iii (1482) | Lost 1-2 | -171436 |
| 4standard | 593 | Ables, Alvin (1481) | Won 2-0 | +191455 |
| 5standard | 477 | Quimbo, Glenn Ian (1501) | Lost 1-2 | -171438 |
| 6standard | 440 | Yu, Joseph Cassidy (1486) | Lost 0-2 | -171421 |
| top | average opponent: 1495record: 2-4 | new rating: 1421 | ||
| Grand Prix Manila 2010 (ROE standard) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 271 | Medalla, Chalsea Ellis (1500) | Lost 0-2 | -181447 |
| 2standard | 279 | Tamayo, Jerbby T (1482) | Won 2-1 | +191466 |
| 3standard | 237 | Singun, Ronald (1432) | Lost 0-2 | -191447 |
| 4standard | 364 | Wu, Catherine Lei (1482) | Lost 1-2 | -171430 |
| 5standard | 458 | Villaluz, Gian Karlo (1462) | Lost 0-2 | -171413 |
| 6standard | 430 | Leoncio, Nicasio III (1446) | Won 2-0 | +181431 |
| 7standard | 334 | Cua, Marc Alden B (1465) | Won 2-0 | +191450 |
| 8standard | 251 | Barrios, Rheymar (1483) | Won 2-1 | +191469 |
| 9standard | 170 | Lim, Rey (1535) | Lost 0-2 | -171452 |
| top | average opponent: 1476record: 4-5 | new rating: 1452 | ||
| Grand Prix Manila 2008 (Lorwyn block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 151 | Candaroma, Rudolph Joh (1500) | Lost 1-2 | -181482 |
| 2block | 202 | Asinas, Rudi Jason (1482) | Lost 0-2 | -181464 |
| 3block | 236 | Terrenal, Timothy (1464) | Won 2-0 | +181482 |
| 4block | 211 | Sugapong, Roald Miklos (1481) | Won 2-0 | +181500 |
| 5block | 186 | Pui, Boon Keng (1548) | Lost 0-2 | -171483 |
| 6block | 247 | Prawira, Aldrich H (1482) | Lost 0-2 | -181465 |
| 7block | 219 | Aquino, Sherwin (1463) | Lost 1-2 | -181447 |
| 8block | 217 | Pastrana, Kristoffer S (1447) | Won 2-1 | +181465 |
| top | average opponent: 1483record: 3-5 | new rating: 1465 | ||