Underwood, John
Current rating: 1515
| Grand Prix Oklahoma City 2013 (THS limited) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 112 | Williams, Patrick (1521) | Won 2-1 | +181554 |
| 3sealed | 280 | Warren, Ward (1519) | Lost 0-2 | -181536 |
| 4sealed | 328 | Wittkopf, David (1489) | Won 2-1 | +171553 |
| 5sealed | 329 | Saal, Ron (1535) | Lost 0-2 | -191534 |
| 6sealed | 270 | Vincent, Jonathan (1483) | Lost 0-2 | -191515 |
| top | average opponent: 1509record: 2-3 | new rating: 1515 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1564 | Hsiung, Kenny (1763) | Lost 0-2 | -141522 |
| 2sealed | 1480 | Ellis-Adams, William (1481) | Won 2-0 | +171539 |
| 3sealed | 1566 | Garcia, Joe (1484) | Won 2-0 | +171556 |
| 4sealed | 1519 | Watson, Brandon (1470) | Lost 0-2 | -201536 |
| top | average opponent: 1550record: 2-2 | new rating: 1536 | ||
| Grand Prix Oakland 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 53 | Souza, Will (1500) | Lost 0-2 | -181482 |
| 2sealed | 116 | Brown, Egan (1483) | Won 2-1 | +181500 |
| 3sealed | 92 | Quilling, Damian (1500) | Won 2-0 | +181518 |
| 4sealed | 130 | Gates, Cody (1517) | Lost 1-2 | -181500 |
| 5sealed | 127 | Huang, Oliver (1500) | Won 2-0 | +181518 |
| 6sealed | 96 | Gibson, Kevin (1503) | Lost 0-2 | -181500 |
| 7sealed | 93 | Benedetti, Michael (1498) | Won 2-1 | +181518 |
| 8sealed | 70 | Lew, Michael (1518) | Won 2-0 | +181536 |
| top | average opponent: 1502record: 5-3 | new rating: 1536 | ||