Ong, Brian
Current rating: 1543
Record: 19-20-2
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 101 | Bingham, William (1582) | Won 2-0 | +191545 |
| 2sealed | 240 | Bell, Benjamin (1518) | Won 2-0 | +181563 |
| 3sealed | 193 | Briscuso, Julian (1532) | Lost 1-2 | -191544 |
| 4sealed | 262 | Dixon, Patrick (1518) | Lost 1-2 | -181526 |
| 5sealed | 703 | Palilonis, Clay (1486) | Won 2-1 | +171543 |
| 6sealed | 558 | Estomba, Charles (1569) | Won 2-1 | +181561 |
| 7sealed | 319 | Kaczorowski, Paul (1533) | Lost 1-2 | -181543 |
| top | average opponent: 1534record: 4-3 | new rating: 1543 | ||
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 167 | Frederick, Vic (1535) | Won 2-0 | +171573 |
| 4standard | 48 | Nelson, Brandon (2094) | Lost 1-2 | -91564 |
| 5standard | 91 | Tarrillion, Nathan (1535) | Lost 0-2 | -191545 |
| 6standard | 285 | Boyd, Michael (1485) | Lost 1-2 | -191526 |
| top | average opponent: 1662record: 1-3 | new rating: 1526 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 538 | Severance, Andrew (1481) | Won 2-1 | +171553 |
| 2sealed | 488 | Mirghahari, Ali (1667) | Won 2-1 | +201573 |
| 3sealed | 108 | Sarraga, Eddie (1536) | Lost 1-2 | -191554 |
| 4sealed | 176 | Johnson, Jon (1719) | Won 0-0 | +211575 |
| 5sealed | 200 | Rosberg, Sean (1530) | Draw 1-1 | -11574 |
| 6sealed | 148 | Staton, Destiny (1535) | Lost 1-2 | -181556 |
| top | average opponent: 1578record: 3-2-1 | new rating: 1556 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 113 | Leister, Nicole (1586) | Lost 1-2 | -171555 |
| 3sealed | 164 | Eaton, Ryan (1498) | Lost 1-2 | -191536 |
| top | average opponent: 1542record: 0-2 | new rating: 1536 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 4 | Avendano, Ivan (1554) | Won 2-0 | +201467 |
| 5sealed | 5 | Landale, Tim (1652) | Won 2-1 | +211488 |
| 6sealed | 8 | Mahaffey, Christopher (1572) | Won 2-0 | +201508 |
| 7sealed | 5 | Cone, Robert (1617) | Won 2-1 | +201528 |
| 8sealed | 129 | Calafell, Joel (1857) | Won 2-1 | +241552 |
| 9sealed | 126 | Ruess, Jan (1879) | Lost 0-2 | -131539 |
| 10draft | 58 | Juza, Martin (2097) | Lost 0-2 | -81531 |
| 11draft | 37 | King, Stephen (1814) | Won 2-0 | +231554 |
| 12draft | 15 | Ruess, Jan (1861) | Lost 0-2 | -131541 |
| 13draft | 8 | Hoaen, Rich (1914) | Won 2-0 | +251566 |
| 14draft | 11 | Hostutler, Justin (1692) | Won 2-1 | +201586 |
| 15draft | 1 | King, Stephen (1836) | Lost 1-2 | -141572 |
| top | average opponent: 1779record: 8-4 | new rating: 1572 | ||
| Grand Prix Atlanta 2003 (8ED standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 57 | Hollar, Paul (1584) | Lost 0-2 | -171465 |
| 2standard | 202 | Lanier, Daniel (1482) | Draw 1-1 | +11466 |
| 3standard | 211 | Loschel, Christian (1432) | Lost 0-2 | -191447 |
| top | average opponent: 1499record: 0-2-1 | new rating: 1447 | ||
| Grand Prix New Orleans 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 6 | Price, Amber (1531) | Lost 0-1 | -171483 |
| 2sealed | 138 | Curry, Richard (1482) | Won 2-1 | +181501 |
| 3sealed | 139 | Greene, Christopher (1519) | Won 2-1 | +181519 |
| 4sealed | 137 | Sanders, Robert (1518) | Won 2-1 | +181537 |
| 5sealed | 63 | Little, Nick (1503) | Lost 0-2 | -191518 |
| 6sealed | 101 | Clark, Aaron (1478) | Lost 1-2 | -181500 |
| 7sealed | 107 | Evans, Matthew (1504) | Lost 0-2 | -181482 |
| top | average opponent: 1505record: 3-4 | new rating: 1482 | ||