Herndon, Christopher
Current rating: 1530
| Grand Prix Portland 2018 (modern) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 180 | Marian, Tudor (1476) | Won 2-1 | +171551 |
| 2modern | 90 | Brock, Kadar (1563) | Lost 0-2 | -181533 |
| 3modern | 634 | Karsten, Brian (1497) | Won 2-1 | +171550 |
| 4modern | 442 | Blue, Holly (1519) | Lost 1-2 | -181532 |
| 5modern | 406 | Reynolds, Michael (1510) | Won 2-0 | +171549 |
| 6modern | 370 | Bradford, William (1495) | Lost 0-2 | -191530 |
| top | average opponent: 1510record: 3-3 | new rating: 1530 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 436 | Truelsen, Samantha (1362) | Won 2-0 | +161480 |
| 2standard | 48 | McIntyre, Louis (1501) | Lost 0-2 | -171463 |
| 3standard | 319 | Upton, Henry (1501) | Won 2-0 | +181481 |
| 4standard | 254 | Stone, Blake (1600) | Won 2-1 | +201501 |
| 5standard | 267 | Vallotton, Brandon (1540) | Won 2-0 | +191520 |
| 6standard | 186 | Chambers, Colron (1418) | Lost 0-2 | -201500 |
| 7standard | 189 | Marklyn, Tyler (1762) | Lost 1-2 | -131487 |
| 8standard | 284 | Ober, Jack (1573) | Won 2-0 | +201507 |
| 9standard | 265 | Zell, Susan (1558) | Won 2-1 | +191526 |
| 10standard | 110 | Mansell, Austin (1699) | Won 2-1 | +211547 |
| 11standard | 142 | Knapp, Charles (1484) | Lost 0-2 | -191528 |
| 12standard | 151 | Clingan, Casey (1605) | Won 2-1 | +191547 |
| 13standard | 103 | Putnam, Tyler (1831) | Lost 0-2 | -131534 |
| top | average opponent: 1572record: 8-5 | new rating: 1534 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 539 | Oshiro, Jonathan (1500) | Lost 1-2 | -181482 |
| 2standard | 412 | Slater, Matthew (1500) | Lost 1-2 | -181464 |
| 3standard | 744 | Botello, Daniel (1481) | Won 2-0 | +191483 |
| 4standard | 714 | Birt, Chris (1481) | Won 2-0 | +181501 |
| 5standard | 388 | Carty, Calvin (1474) | Lost 1-2 | -191482 |
| 6standard | 531 | Weyer, Kevin (1479) | Lost 1-2 | -181464 |
| top | average opponent: 1486record: 2-4 | new rating: 1464 | ||