Brummer, Jonathan
Current rating: 1463
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 462 | Hall, James (1517) | Won 2-1 | +201448 |
| 2legacy | 362 | Lapping, Kristopher (1519) | Won 2-1 | +191467 |
| 3legacy | 323 | Elenbogen, Andrew (1776) | Lost 0-2 | -131454 |
| 4legacy | 575 | Boku, Takashi (1667) | Won 2-1 | +221476 |
| 5legacy | 498 | Accristo, Nicholas (1434) | Won 2-1 | +171493 |
| 6legacy | 273 | Everett, Timothy (1616) | Won 2-1 | +211514 |
| 7legacy | 2106 | Smith, Brandon2661 (1581) | Lost 0-2 | -171497 |
| 8legacy | 2120 | Mccartney, Travis (1556) | Lost 0-2 | -171480 |
| 9legacy | 420 | Buzzie, Daniel (1522) | Lost 1-2 | -171463 |
| top | average opponent: 1576record: 5-4 | new rating: 1463 | ||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 121 | Lies, William (1514) | Lost 0-2 | -171464 |
| 2sealed | 572 | Miller, Corey (1481) | Lost 1-2 | -181446 |
| 3sealed | 708 | Madsen, Michael (1442) | Lost 1-2 | -181428 |
| top | average opponent: 1479record: 0-3 | new rating: 1428 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 65 | Esparza, James (1485) | Lost 1-2 | -181482 |
| 2sealed | 194 | Zbikowski, Ryan (1500) | Won 2-0 | +181500 |
| 3sealed | 206 | Haenig, Greg (1489) | Lost 1-2 | -181482 |
| 4sealed | 239 | Miller, Spencer (1488) | Won 2-0 | +181500 |
| 5sealed | 215 | Coon, Brandon (1451) | Lost 0-2 | -191481 |
| top | average opponent: 1482record: 2-3 | new rating: 1481 | ||