Layfield, John
Current rating: 1498
Record: 3-3-1
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1149 | Kueck, Truett (1500) | Lost 0-2 | -181482 |
| 2sealed | 1056 | Cornejo, Christopher (1541) | Lost 1-2 | -171465 |
| 3sealed | 1360 | Moon, Kevin (1419) | Won 2-1 | +171482 |
| 4sealed | 1299 | Chapin, Matthew (1482) | Lost 0-2 | -181464 |
| 5sealed | 1131 | Zhou, Charles (1445) | Won 2-1 | +181482 |
| 6sealed | 917 | Ly, Trevor (1430) | Won 2-0 | +171499 |
| 7sealed | 711 | LaCluyze, Jennifer (1435) | Draw 1-1 | -11498 |
| average opponent: 1464record: 3-3-1 | new rating: 1498 | |||