Yoon, Dave
Current rating: 1463
Record: 1-3
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 134 | Martin, Wesley (1500) | Won 2-0 | +181518 |
| 2standard | 134 | Nabi, Basil (1483) | Lost 0-2 | -191499 |
| 3standard | 291 | Medlin, James m (1500) | Lost 1-2 | -181481 |
| 4standard | 446 | Gray, Matthew E (1482) | Lost 1-2 | -181463 |
| average opponent: 1491record: 1-3 | new rating: 1463 | |||