Rothenberger, Deryck M
Current rating: 1477
| Grand Prix Minneapolis 2009 (ZEN limited) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 37 | pavlik, eric a (1500) | Won 2-0 | +191467 |
| 2sealed | 251 | Ferrando, Matthew (1600) | Lost 0-2 | -151452 |
| 3sealed | 231 | Tamura, Kentaro (1578) | Won 2-1 | +201472 |
| 4sealed | 177 | Tam, Wayne (1521) | Lost 0-2 | -171455 |
| 5sealed | 298 | Marchand, Richard (1561) | Lost 1-2 | -161439 |
| 6sealed | 331 | Yang, Bill (1482) | Won 2-0 | +181457 |
| 7sealed | 240 | Sobon, Steven (1501) | Lost 1-2 | -171440 |
| 8sealed | 200 | Zea, Tammy L (1486) | Won 2-1 | +191459 |
| 9sealed | 151 | Salway, Ashlund (1479) | Won 2-0 | +181477 |
| top | average opponent: 1523record: 5-4 | new rating: 1477 | ||
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 34 | Baker, Michael (1505) | Lost 0-2 | -181464 |
| 3standard | 397 | Henry, Patrick (1535) | Lost 0-2 | -161448 |
| 4standard | 465 | Neigel, Barrett (1481) | Won 2-0 | +181466 |
| 5standard | 323 | Pavic, Marinko (1464) | Lost 0-2 | -181448 |
| top | average opponent: 1496record: 1-3 | new rating: 1448 | ||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 170 | Kiang, David (1518) | Won 2-0 | +181518 |
| 3legacy | 65 | Murray, Leslie (1483) | Won 2-0 | +181536 |
| 4legacy | 80 | Kolowith, Tommy (1537) | Lost 0-2 | -181518 |
| 5legacy | 125 | Rosbach, Kenneth (1537) | Draw 1-1 | 01518 |
| 6legacy | 172 | Carpenter, Brad (1497) | Lost 1-2 | -181500 |
| 7legacy | 245 | Kohler, Michael (1518) | Won 2-1 | +181518 |
| 8legacy | 170 | Magnan, Bronson (1493) | Lost 1-2 | -181500 |
| 9legacy | 168 | Misiaszek, Michael (1519) | Lost 0-2 | -181482 |
| top | average opponent: 1513record: 3-4-1 | new rating: 1482 | ||