Brooks, John S
Current rating: 1523
Record: 15-13-1
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1546 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 226 | Ledford, Travis (1482) | Lost 1-2 | -191527 |
| 2sealed | 209 | Foltz, Andrew E (1413) | Lost 0-2 | -201507 |
| 3sealed | 314 | Rightmire, Nick (1463) | Won 2-0 | +171524 |
| 4sealed | 246 | Chute, Philip M (1481) | Won 2-0 | +181542 |
| 5sealed | 211 | Lundquist, Anthony M (1483) | Lost 1-2 | -191523 |
| top | average opponent: 1464record: 2-3 | new rating: 1523 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1568 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 161 | Berghorn, Carl (1500) | Won 2-0 | +171585 |
| 2sealed | 156 | Veal, Adam (1517) | Lost 0-2 | -191566 |
| 3sealed | 307 | Daley, Joshua (1480) | Lost 1-2 | -201546 |
| top | average opponent: 1499record: 1-2 | new rating: 1546 | ||
| Grand Prix Atlanta 2008 (ALA limited) | starting rating: 1595 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 88 | Bell, Patrick (1500) | Won 2-0 | +161611 |
| 2sealed | 49 | Johnson, Ethan (1502) | Lost 1-2 | -201591 |
| 3sealed | 201 | Krug, Andrew (1505) | Lost 0-2 | -191572 |
| 4sealed | 249 | Nestico, Adrian (1503) | Won 2-0 | +171589 |
| 5sealed | 187 | Morris, Anthony (1472) | Lost 1-2 | -211568 |
| top | average opponent: 1496record: 2-3 | new rating: 1568 | ||
| Grand Prix Daytona Beach 2007 (LRW limited) | starting rating: 1585 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 114 | Oliveros, Alex (1480) | Lost 1-2 | -201565 |
| 2sealed | 203 | McCown, Monica (1482) | Won 2-0 | +171582 |
| 3sealed | 223 | Loftis, Craig (1501) | Lost 1-2 | -201562 |
| 4sealed | 231 | Burritt, Max (1482) | Won 2-1 | +171579 |
| 5sealed | 173 | Till, Benjamin (1510) | Won 2-0 | +171596 |
| 6sealed | 110 | Rivera, Israel (1529) | Won 2-1 | +161612 |
| 7sealed | 120 | Glackin, Ryan (1650) | Lost 0-2 | -171595 |
| top | average opponent: 1519record: 4-3 | new rating: 1595 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 170 | Hardage, David (1500) | Won 2-0 | +181518 |
| 2extended | 183 | Donovan, John (1518) | Won 2-0 | +181536 |
| 3extended | 68 | Rumans, Troy M (1505) | Won 0-0 | +171553 |
| 4extended | 3 | De Rosa, Antonino (1853) | Won 2-0 | +241577 |
| 5extended | 30 | Woods, Conley (1518) | Won 2-0 | +171594 |
| 6extended | 4 | Howard, David (1677) | Lost 0-2 | -171577 |
| 7extended | 46 | Crowder, Kevin (1574) | Won 2-0 | +181595 |
| 8extended | 31 | Reeves, Neil (1850) | Draw 1-1 | +51600 |
| 9extended | 27 | Irvine, David (1803) | Lost 1-2 | -151585 |
| top | average opponent: 1644record: 6-2-1 | new rating: 1585 | ||