Dobreva, Tatyana
Current rating: 1475
Record: 11-14-1
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 139 | Posey, Daniel (1464) | Lost 1-2 | -171413 |
| 2standard | 406 | Michl, Adam (1485) | Draw 1-1 | +11414 |
| 3standard | 502 | Johns, Janet (1481) | Won 2-1 | +191433 |
| 4standard | 470 | Sherman, Tim (1499) | Won 2-1 | +191452 |
| 5standard | 345 | Koenick, Ethan (1518) | Lost 0-2 | -161436 |
| 6standard | 434 | Johnson, Vincente (1503) | Won 2-0 | +191455 |
| 7standard | 320 | Wagstaff, Evan (1520) | Won 2-1 | +191474 |
| 8standard | 231 | Dame, David (1537) | Won 2-0 | +191493 |
| 9standard | 153 | Duggan, Matthew [USA] (1500) | Lost 0-2 | -181475 |
| top | average opponent: 1501record: 5-3-1 | new rating: 1475 | ||
| Grand Prix Providence 2011 (legacy) | starting rating: 1396 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 573 | Yuzva, Steven (1499) | Won 2-0 | +191415 |
| 2legacy | 510 | Johnson, Jon (1493) | Won 2-1 | +201435 |
| 3legacy | 417 | Learnihan-Sylvester, Sean (1486) | Lost 0-2 | -171418 |
| 4legacy | 542 | Zhang, Peter (1518) | Won 2-1 | +201438 |
| 5legacy | 461 | Zhu, Yang-Yang (1631) | Lost 0-2 | -151423 |
| 6legacy | 571 | Crowe, Patrick H (1544) | Won 2-1 | +201443 |
| 7legacy | 503 | Maynard, Pascal (1716) | Lost 1-2 | -131430 |
| top | average opponent: 1555record: 4-3 | new rating: 1430 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 117 | Mcduffee, Adam F (1466) | Lost 1-2 | -171429 |
| 2extended | 169 | Brickey, Christopher (1481) | Lost 1-2 | -171412 |
| 3extended | 218 | Mahaffey, Christopher (1517) | Lost 1-2 | -161396 |
| top | average opponent: 1488record: 0-3 | new rating: 1396 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 522 | Walton, Ben (1500) | Lost 0-2 | -181482 |
| 2sealed | 630 | Lee, Jaimy A (1482) | Lost 0-2 | -181464 |
| 3sealed | 711 | Barber, Matthew (1464) | Lost 0-2 | -181446 |
| 4sealed | 721 | Turnbow, Greg (1445) | Won 2-0 | +181464 |
| 5sealed | 672 | Buys, Linda (1463) | Lost 0-2 | -181446 |
| 6sealed | 627 | Smythe, Jordan (1445) | Won 2-0 | +181464 |
| 7sealed | 573 | Jordan, Amanda C (1482) | Lost 1-2 | -181446 |
| top | average opponent: 1469record: 2-5 | new rating: 1446 | ||