Campbell, Matthew
Current rating: 1305
Record: 22-38
| Grand Prix London 2019 (WAR sealed) | starting rating: 1334 | |||
| round | table | opponent (rating) | result | Δrating |
| B1sealed | 1041 | Sumukari, Albin (1232) | Lost 0-2 | -201314 |
| B2sealed | 1146 | Unett, George (1466) | Won 2-1 | +211335 |
| B3sealed | 1054 | Holmes, Greg (1677) | Lost 0-2 | -121323 |
| B4sealed | 1059 | Jetmundsen, Espen (1342) | Lost 0-2 | -181305 |
| top | average opponent: 1429record: 1-3 | new rating: 1305 | ||
| Grand Prix Toronto 2019 (modern) | starting rating: 1340 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 62 | Brunner, Aaron (1354) | Won 2-0 | +181358 |
| 2modern | 117 | Carino, Joseph (1582) | Lost 1-2 | -141344 |
| 3modern | 489 | Hill, Zachary (1423) | Lost 1-2 | -161328 |
| 4modern | 559 | Nelson, Dustin (1500) | Won 2-1 | +211349 |
| 5modern | 289 | Makuch, Greg (1522) | Lost 0-2 | -151334 |
| top | average opponent: 1476record: 2-3 | new rating: 1334 | ||
| Grand Prix Toronto 2018 (modern) | starting rating: 1387 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 250 | Otero, Josh (1500) | Lost 0-2 | -161371 |
| 2modern | 658 | Schelble, Stephanie (1447) | Lost 0-2 | -161355 |
| 3modern | 712 | Lopes, Marco (1544) | Lost 0-2 | -151340 |
| top | average opponent: 1497record: 0-3 | new rating: 1340 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1412 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 212 | Jenkins, Michael (1450) | Lost 1-2 | -181394 |
| 2standard | 584 | Miles, Connor (1479) | Lost 1-2 | -161378 |
| 3standard | 734 | Wilkes, Nicolas (1404) | Won 2-0 | +181396 |
| 4standard | 721 | Jacox, Sean (1519) | Won 2-0 | +211417 |
| 5standard | 572 | Hudak, Casey (1775) | Lost 1-2 | -121405 |
| 6standard | 530 | Bock, James (1428) | Lost 1-2 | -181387 |
| top | average opponent: 1509record: 2-4 | new rating: 1387 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1424 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 260 | Nelkin, Dylan (1483) | Lost 0-2 | -171407 |
| 2standard | 405 | Luna, Christopher (1445) | Won 2-0 | +191426 |
| 3standard | 636 | Cleaver, Michael (1511) | Won 2-1 | +191445 |
| 4standard | 286 | Minium, Michael (1521) | Lost 1-2 | -171428 |
| 5standard | 408 | Gonzalez, Robert (1497) | Lost 1-2 | -161412 |
| top | average opponent: 1491record: 2-3 | new rating: 1412 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 550 | Guerrero, Leopoldo (1570) | Lost 0-2 | -161437 |
| 2sealed | 759 | Delucchi, Brian (1468) | Lost 1-2 | -171420 |
| 3sealed | 824 | Mosquera, Milo (1486) | Won 2-1 | +191439 |
| 4sealed | 656 | Robledo, Antonio (1517) | Lost 1-2 | -171422 |
| 5sealed | 787 | Fan, Eric (1451) | Won 2-0 | +191441 |
| 6sealed | 617 | Cervantes, Carl (1493) | Lost 0-2 | -171424 |
| top | average opponent: 1498record: 2-4 | new rating: 1424 | ||
| Grand Prix New York 2016 (SOI standard) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 170 | Bryan, Jordan (1515) | Lost 1-2 | -171445 |
| 2standard | 501 | Xidea, Ronald (1496) | Won 2-1 | +191464 |
| 3standard | 749 | White, Scott (1525) | Won 2-1 | +191483 |
| 4standard | 298 | Balbuena, Jairo (1522) | Won 2-1 | +191502 |
| 5standard | 218 | Snyder, Adam (1540) | Lost 0-2 | -181484 |
| 6standard | 375 | Orts, Zachary (1669) | Lost 0-2 | -141470 |
| 7standard | 491 | Howard, Hannah (1538) | Lost 1-2 | -171453 |
| top | average opponent: 1543record: 3-4 | new rating: 1453 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 100 | Ohinata, Jun (1587) | Lost 0-2 | -151413 |
| 4sealed | 104 | Festini, Mark (1591) | Won 2-0 | +211434 |
| 5sealed | 62 | Longo, Andrew (1753) | Lost 0-2 | -121422 |
| 6sealed | 132 | Alexander, Brandon (1520) | Won 2-1 | +191441 |
| 7sealed | 117 | Fucello, Joseph (1537) | Won 2-0 | +201461 |
| 8sealed | 53 | Allen, Michael (1435) | Won 2-1 | +181479 |
| 9sealed | 43 | Spezzo, Vincent (1552) | Lost 0-2 | -171462 |
| top | average opponent: 1568record: 4-3 | new rating: 1462 | ||
| Grand Prix Memphis 2015 (FRF standard) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 170 | Baxter, Drew (1500) | Lost 0-2 | -171434 |
| 2standard | 416 | Daniels, Sabastian (1500) | Won 2-0 | +191453 |
| 3standard | 250 | Clark, Mason (1500) | Lost 1-2 | -171436 |
| 4standard | 378 | Fincher, Tyler (1481) | Won 2-1 | +191455 |
| 5standard | 381 | Owens, Jonathan (1558) | Lost 1-2 | -161439 |
| 6standard | 362 | Jones, Austin (1472) | Won 2-0 | +181457 |
| 7standard | 282 | Jarvis, Aaron (1608) | Lost 0-2 | -151442 |
| 8standard | 230 | Martin, Clyde (1657) | Lost 0-2 | -141428 |
| top | average opponent: 1534record: 3-5 | new rating: 1428 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 897 | Cantrell, Carl (1555) | Lost 0-2 | -161448 |
| 2sealed | 941 | Kundel, Jeremiah (1480) | Won 2-1 | +181466 |
| 3sealed | 325 | Landers, Mark (1448) | Won 2-0 | +181484 |
| 4sealed | 191 | Newcombe, Steve (1618) | Lost 0-0 | -161468 |
| 5sealed | 280 | Hamblin, Joe (1500) | Lost 1-2 | -171451 |
| top | average opponent: 1520record: 2-3 | new rating: 1451 | ||
| Grand Prix Atlanta 2014 (JOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 570 | Soder, Stefan (1500) | Won 2-1 | +181518 |
| 2sealed | 319 | Bilyeu, Philip (1506) | Lost 1-2 | -181500 |
| 3sealed | 567 | Saia, Joseph (1523) | Lost 0-2 | -181482 |
| 4sealed | 738 | Lucas, Nicholas (1480) | Lost 0-2 | -181464 |
| top | average opponent: 1502record: 1-3 | new rating: 1464 | ||