Lumpkin, Clayton
Current rating: 1465
Record: 4-6
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 286 | Hernandez, Ramon (1480) | Lost 1-2 | -181465 |
| 2standard | 487 | Porter, Christopher (1434) | Won 2-1 | +171482 |
| 3standard | 306 | Cude, Nathan (1500) | Lost 0-2 | -171465 |
| average opponent: 1471record: 1-2 | new rating: 1465 | |||
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 176 | Rountree, Collin (1500) | Lost 0-2 | -181482 |
| 2sealed | 376 | R788, Brian (1482) | Lost 0-2 | -181464 |
| 3sealed | 361 | Jasheway, Zach W (1370) | Won 2-0 | +161480 |
| 4sealed | 393 | Blanchard, Derek (1481) | Won 2-1 | +181498 |
| 5sealed | 269 | Cohen, Adam H (1475) | Lost 0-2 | -181480 |
| 6sealed | 285 | Grahmann, Jordan (1463) | Won 2-0 | +181498 |
| 7sealed | 229 | Hendrix, Carl (1689) | Lost 0-2 | -151483 |
| average opponent: 1494record: 3-4 | new rating: 1483 | |||