Birdwell, Benjamin T
Current rating: 1575
| Grand Prix San Antonio 2012 (RTR standard) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 119 | Ramirez, Erick (1500) | Won 2-0 | +171542 |
| 2standard | 86 | Maguire, Justin (1575) | Won 2-1 | +191561 |
| 3standard | 74 | Dougan, Jacob (1536) | Lost 0-2 | -191542 |
| 4standard | 194 | Johnson, Ashton (1518) | Won 2-1 | +181560 |
| 5standard | 64 | Hernandez, Mauro (1540) | Lost 1-2 | -191541 |
| 6standard | 196 | Duffy, Dustin J (1520) | Won 2-1 | +181559 |
| 7standard | 74 | Chenard, Frederic (1489) | Won 2-0 | +171576 |
| 8standard | 103 | Hoffman, Kris (1545) | Lost 1-2 | -191557 |
| 9standard | 113 | Gonzales, Erica (1531) | Won 2-1 | +181575 |
| top | average opponent: 1528record: 6-3 | new rating: 1575 | ||
| Grand Prix Kansas City 2008 (ALA limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 200 | Baxter, Harrison (1500) | Lost 1-2 | -171446 |
| 2sealed | 219 | Winslow, Steven B (1482) | Won 2-1 | +191465 |
| 3sealed | 200 | Hodges, Corey (1467) | Won 2-1 | +181483 |
| 4sealed | 202 | Dao, Phu (1616) | Lost 1-2 | -161467 |
| 5sealed | 247 | Salahub, Ronald W (1500) | Lost 0-2 | -171450 |
| 6sealed | 219 | Lytle, Tyler (1561) | Won 2-1 | +201470 |
| 7sealed | 162 | Waldeck, Greg (1473) | Won 2-0 | +181488 |
| 8sealed | 119 | White, Aaron (1509) | Won 2-1 | +181506 |
| 9sealed | 84 | Winters, John W (1524) | Won 2-0 | +191525 |
| top | average opponent: 1515record: 6-3 | new rating: 1525 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 81 | Hsu, Tim (1500) | Lost 0-2 | -181482 |
| 2extended | 275 | Pringle, Steve (1481) | Lost 1-2 | -181464 |
| 3extended | 298 | Voris, Tim (1464) | Won 0-0 | +181482 |
| 4extended | 314 | Terry, David (1481) | Won 2-0 | +181500 |
| 5extended | 214 | Rivkin, Debi (1500) | Lost 0-1 | -181482 |
| 6extended | 215 | Pauly, Christopher M (1448) | Lost 0-2 | -191463 |
| top | average opponent: 1479record: 2-4 | new rating: 1463 | ||