Underwood, Chris
Current rating: 1462
Record: 4-6
| Grand Prix Phoenix 2020 (pioneer) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 19 | Ansell, Justin (1435) | Won 2-0 | +171499 |
| 2pioneer | 57 | Artz, Joseph (1466) | Lost 0-2 | -191480 |
| 3pioneer | 249 | Jenkins-Baumgardner, Jacob (1501) | Lost 0-2 | -171463 |
| 4pioneer | 407 | Wellman, Andrew (1430) | Won 2-0 | +171480 |
| 5pioneer | 332 | Klein, Andrew 8711 (1462) | Lost 1-2 | -181462 |
| average opponent: 1459record: 2-3 | new rating: 1462 | |||
| Grand Prix San Diego 1999 (MMQ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 44 | Rush, Gary (1505) | Won 0-0 | +181518 |
| 2sealed | 41 | Spaulding, Ian (1500) | Lost 0-0 | -181500 |
| 3sealed | 99 | Le Friant, Christopher (1509) | Lost 1-2 | -181482 |
| 4sealed | 101 | Quiroga, Ivan (1482) | Won 0-0 | +181500 |
| 5sealed | 71 | Sas, Ariel (1483) | Lost 0-0 | -181482 |
| average opponent: 1496record: 2-3 | new rating: 1482 | |||