Zimmerman, Brandon
Current rating: 1466
Record: 4-6-1
| Grand Prix Richmond 2014 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 439 | DeStefano, JohnMichael (1500) | Lost 0-2 | -181465 |
| 2modern | 501 | Gindt, Lukas (1482) | Draw 1-1 | 01465 |
| 3modern | 619 | Schaefer, Andrew (1482) | Lost 1-2 | -171448 |
| 4modern | 672 | Bradley, Noah (1463) | Won 2-0 | +181466 |
| 5modern | 548 | Miller, Jonathan (1435) | Won 2-1 | +171483 |
| 6modern | 426 | Armstrong, Jirhon (1501) | Lost 0-2 | -171466 |
| average opponent: 1477record: 2-3-1 | new rating: 1466 | |||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 4 | Kheyfets, Greg (1499) | Won 2-0 | +181518 |
| 2standard | 70 | Fox, Adam M (1604) | Lost 0-2 | -161502 |
| 3standard | 284 | Simmons, Jacob (1499) | Won 2-1 | +181520 |
| 4standard | 137 | Kazhdan, Joseph (1479) | Lost 1-2 | -191501 |
| 5standard | 301 | Edwards, Kenneth R (1500) | Lost 0-2 | -181483 |
| average opponent: 1516record: 2-3 | new rating: 1483 | |||