Vonderahe, Lawrence Th
Current rating: 1552
Record: 6-3
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 486 | Mach, Frankie (1500) | Lost 1-2 | -181482 |
| 2sealed | 476 | Armstrong, Justin (1482) | Won 2-0 | +181500 |
| 3sealed | 331 | Hegnell, Gustaf (1500) | Won 2-1 | +181518 |
| 4sealed | 348 | Fristoe, Teale (1517) | Won 2-0 | +181536 |
| 5sealed | 133 | Freedman, Henry (1543) | Won 2-1 | +181554 |
| 6sealed | 109 | Larson, Greg (1510) | Lost 0-2 | -191535 |
| 7sealed | 205 | Thibeau, Markus (1490) | Won 2-0 | +171552 |
| 8sealed | 70 | Merz, Clayton (1507) | Won 2-1 | +181570 |
| 9sealed | 60 | Clark, Ken (1580) | Lost 0-2 | -181552 |
| average opponent: 1514record: 6-3 | new rating: 1552 | |||