Koo, Austin
Current rating: 1538
Record: 4-2-1
| Grand Prix Portland 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 14 | Fish, Galen (1500) | Won 2-0 | +181518 |
| 2modern | 296 | Myers, Caleb (1751) | Won 2-0 | +221540 |
| 3modern | 16 | Perryman, Fred (1488) | Draw 1-1 | -11539 |
| 4modern | 151 | Plouff, Eli (1467) | Lost 1-2 | -191520 |
| 5modern | 236 | Kim, Francis (1518) | Lost 1-2 | -181502 |
| 6modern | 297 | Brown, Tyson (1501) | Won 2-0 | +181520 |
| 7modern | 106 | Ridgeway, Eric (1521) | Won 2-1 | +181538 |
| average opponent: 1535record: 4-2-1 | new rating: 1538 | |||