Knapp, Charles
Current rating: 1472
Record: 16-21
| Grand Prix Portland 2018 (modern) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 609 | Sustaita, Nicolas (1577) | Won 2-1 | +201459 |
| 2modern | 230 | Stephani, Jonathan (1464) | Won 2-0 | +181477 |
| 3modern | 59 | Erickson, Justin (1500) | Won 2-0 | +191496 |
| 4modern | 160 | Bullock, Eric (1557) | Won 2-0 | +191515 |
| 5modern | 7 | Thiessen, Jacob (1902) | Lost 1-2 | -121503 |
| 6modern | 154 | Yao, Chris (1759) | Lost 0-2 | -131490 |
| 7modern | 320 | McArtor, Brad (1512) | Lost 1-2 | -181472 |
| top | average opponent: 1610record: 4-3 | new rating: 1472 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 14 | Cooley, Jordan (1550) | Lost 1-2 | -171458 |
| 2modern | 874 | Werbelow, Chase (1427) | Won 2-1 | +181476 |
| 3modern | 907 | Schlumpf, Michael (1425) | Lost 0-2 | -191457 |
| 4modern | 804 | Carbary, Justin (1432) | Lost 1-2 | -181439 |
| top | average opponent: 1459record: 1-3 | new rating: 1439 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1403 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 376 | Brown, Izabel (1518) | Lost 1-2 | -161387 |
| 3standard | 498 | Cade, Justin (1504) | Won 2-1 | +201407 |
| 4standard | 253 | Worthey, Lee (1518) | Won 2-0 | +201427 |
| 5standard | 112 | Colter, Nolan (1536) | Won 2-1 | +201447 |
| 6standard | 68 | Sawyer, Ronald (1560) | Won 2-1 | +201467 |
| 7standard | 28 | Goe, Brandon (1597) | Won 2-0 | +211488 |
| 8standard | 15 | Munck, Jon (1587) | Won 2-0 | +201508 |
| 9standard | 7 | Diamant, Daniel (1742) | Lost 1-2 | -141494 |
| 10standard | 54 | Sager, Jeremy (1988) | Lost 0-2 | -101484 |
| 11standard | 142 | Herndon, Christopher (1547) | Won 2-0 | +191503 |
| 12standard | 78 | Thiessen, Jacob (1889) | Lost 0-2 | -111492 |
| 13standard | 85 | Son, Steven (1554) | Lost 1-2 | -171475 |
| top | average opponent: 1628record: 7-5 | new rating: 1475 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 264 | Nicely, Cody (1494) | Lost 1-2 | -171415 |
| 4standard | 284 | Sanchez, Joseph (1385) | Lost 0-2 | -191396 |
| 5standard | 579 | Boston, Steven (1503) | Lost 0-2 | -161380 |
| 6standard | 574 | Cruz, Jordan (1483) | Won 2-0 | +201400 |
| 7standard | 432 | Mahr, Philip (1496) | Won 2-1 | +201420 |
| 8standard | 412 | Hiatt, Cody (1502) | Lost 1-2 | -171403 |
| top | average opponent: 1477record: 2-4 | new rating: 1403 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 52 | Spears, Tyler (1518) | Lost 0-2 | -171445 |
| 3sealed | 450 | Minuti, Joseph (1505) | Won 2-1 | +191464 |
| 4sealed | 283 | Kwan, Michael (1647) | Lost 1-2 | -141450 |
| 5sealed | 333 | Bruce, Adam (1451) | Lost 0-2 | -181432 |
| top | average opponent: 1530record: 1-3 | new rating: 1432 | ||
| Grand Prix Portland 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 246 | Miller, Austin J. (1500) | Won 2-0 | +181518 |
| 2modern | 128 | Roberts, Wesley (1518) | Lost 0-2 | -181500 |
| 3modern | 153 | Anderson, Andrew (1465) | Lost 0-2 | -191481 |
| 4modern | 357 | Parks, Aaron (1415) | Lost 0-2 | -191462 |
| top | average opponent: 1474record: 1-3 | new rating: 1462 | ||