Chapman, Peter
Current rating: 1566
Record: 22-22-1
| Grand Prix Los Angeles 2019 (modern) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 206 | Moran, Spencer (1638) | Won 2-0 | +211486 |
| 3modern | 299 | Marts, Logan (1711) | Lost 1-2 | -141472 |
| 4modern | 413 | Chafin, Ian (1561) | Won 2-1 | +191491 |
| 5modern | 100 | Feeman, Dylan (1814) | Lost 0-2 | -121479 |
| 6modern | 285 | Chatham, Zach (1438) | Won 2-1 | +171496 |
| 7modern | 189 | Ellin Carrillo, Edward (1486) | Won 2-1 | +181514 |
| 8modern | 174 | Kurteff, Garret (1558) | Won 2-1 | +191533 |
| 9modern | 121 | Hagen, Jacob (1778) | Lost 1-2 | -141519 |
| 10modern | 111 | Deng, Robert (1593) | Lost 0-2 | -161503 |
| 11modern | 132 | Young, Bryant (1628) | Lost 0-2 | -161487 |
| 12modern | 137 | Doepel, Steven (1418) | Won 2-0 | +171504 |
| 13modern | 120 | Gonzalez, Gabriel (1657) | Won 2-0 | +201524 |
| 14modern | 99 | Lundquist, Anthony (1840) | Won 2-1 | +241548 |
| 15modern | 96 | Zazanis, Frank (1569) | Won 2-0 | +181566 |
| top | average opponent: 1621record: 9-5 | new rating: 1566 | ||
| Grand Prix Portland 2018 (modern) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 302 | Brock, Kadar (1581) | Lost 0-2 | -171496 |
| 4modern | 242 | LeBohec, Louis (1519) | Lost 1-2 | -171479 |
| 5modern | 609 | Lee, Valerian (1687) | Lost 0-2 | -141465 |
| top | average opponent: 1596record: 0-3 | new rating: 1465 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 399 | Oda, Hideto (1490) | Lost 1-2 | -171466 |
| 3modern | 754 | Egner, Tevin (1596) | Won 2-0 | +201486 |
| 4modern | 540 | Garcia, Ignacio Javier (1733) | Won 2-1 | +221508 |
| 5modern | 461 | Iversen, Phil (1556) | Lost 1-2 | -171491 |
| 6modern | 340 | Barta, Michael [USA] (1513) | Won 2-1 | +191510 |
| 7modern | 236 | Blank, Jonathan (1733) | Won 2-0 | +221532 |
| 8modern | 249 | Neumann, Thomas (1506) | Lost 1-2 | -191513 |
| top | average opponent: 1589record: 4-3 | new rating: 1513 | ||
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 203 | Bradley, Dakota (1500) | Won 2-0 | +191494 |
| 2legacy | 379 | Genova, Daniel (1520) | Won 2-0 | +181512 |
| 3legacy | 140 | Robbins, Jordon (1564) | Won 2-1 | +191531 |
| 4legacy | 112 | Brown, Joel (1502) | Lost 1-2 | -181513 |
| 5legacy | 175 | Scharosch, Steve (1542) | Lost 1-2 | -181495 |
| 6legacy | 257 | Herold, Chris (1568) | Won 2-1 | +191514 |
| 7legacy | 159 | Zafra, Marcel Angelo (1793) | Lost 1-2 | -131501 |
| 8legacy | 325 | Sutton, Jeremy (1499) | Lost 1-2 | -181483 |
| top | average opponent: 1561record: 4-4 | new rating: 1483 | ||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 565 | Newman, Chelsea (1500) | Won 2-0 | +191483 |
| 2modern | 293 | Tan, Franche (1570) | Won 2-1 | +191502 |
| 3modern | 259 | Alspach, Matthew (1486) | Won 2-1 | +181520 |
| 4modern | 243 | Yasooka, Shota (2109) | Lost 0-2 | -81512 |
| 5modern | 198 | Carpenter, John (1558) | Lost 1-2 | -181494 |
| 6modern | 345 | Jerome, Alec (1512) | Lost 1-2 | -171477 |
| 7modern | 579 | Pontius, Jacob (1470) | Won 2-1 | +181495 |
| 8modern | 468 | Velazquez, Daniel (1418) | Lost 0-2 | -201475 |
| top | average opponent: 1578record: 4-4 | new rating: 1475 | ||
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 67 | Garrod, Benjamin (1500) | Lost 0-2 | -181482 |
| 2standard | 448 | Sanborn, Jake (1483) | Won 2-1 | +181500 |
| 3standard | 377 | Nelson, Sam (1504) | Draw 1-1 | 01500 |
| 4standard | 359 | Richey, Tim (1500) | Lost 0-2 | -181482 |
| 5standard | 437 | Mireles, Cipriano (1480) | Lost 0-2 | -181464 |
| top | average opponent: 1493record: 1-3-1 | new rating: 1464 | ||