Breithaupt, David
Current rating: 1449
Record: 3-6
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 384 | Nielsen, Rian A (1500) | Lost 0-2 | -181482 |
| 2sealed | 584 | Knodel, Brandon (1482) | Lost 0-2 | -181464 |
| 3sealed | 551 | Whilden, Eric (1464) | Won 2-0 | +181482 |
| 4sealed | 423 | Freneau, Phil (1666) | Lost 0-2 | -151467 |
| 5sealed | 464 | Henick, Kyle (1467) | Won 2-0 | +181485 |
| 6sealed | 387 | Thomson, Brandon (1481) | Lost 1-2 | -181467 |
| 7sealed | 301 | Billig, Jamey (1454) | Won 2-0 | +181485 |
| 8sealed | 213 | URIBE, CARLOS (1481) | Lost 0-2 | -181467 |
| 9sealed | 164 | Lapp, Peter (1479) | Lost 0-2 | -181449 |
| average opponent: 1497record: 3-6 | new rating: 1449 | |||