Johnston, Matthew
Current rating: 1511
Record: 17-16-1
| Grand Prix Madison 2019 (WAR limited) | starting rating: 1550 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 49 | Jerger, Bryan (1478) | Lost 1-2 | -191531 |
| 2sealed | 261 | Lukes, Scott (1455) | Lost 1-2 | -201511 |
| top | average opponent: 1467record: 0-2 | new rating: 1511 | ||
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 346 | Lee, Doug (1437) | Lost 0-2 | -201550 |
| 2modern | 495 | Arch, Clayton (1692) | Won 2-1 | +201570 |
| 3modern | 784 | Feldman, Samuel (1499) | Lost 0-2 | -191551 |
| 4modern | 815 | Alderman, Rusty (1484) | Won 2-0 | +171568 |
| 5modern | 716 | Li, Jinlin (1697) | Won 2-1 | +201588 |
| 6modern | 338 | Popp, Zachary (1518) | Lost 0-2 | -191569 |
| 7modern | 552 | Boone, George (1518) | Lost 0-2 | -191550 |
| top | average opponent: 1549record: 3-4 | new rating: 1550 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 15 | Howard, Thomas (1387) | Won 2-0 | +141614 |
| 2modern | 171 | Johnson, Jon 0731 (1518) | Lost 1-2 | -191595 |
| 3modern | 960 | Schulz, Lucas (1550) | Draw 1-1 | -11594 |
| 4modern | 786 | Smith, Braedon (1462) | Won 2-0 | +151609 |
| 5modern | 542 | Seliger, Mike (1517) | Lost 1-2 | -191590 |
| 6modern | 743 | Caudill, Nick (1499) | Lost 0-2 | -201570 |
| top | average opponent: 1489record: 2-3-1 | new rating: 1570 | ||
| Grand Prix Indianapolis 2012 (legacy) | starting rating: 1574 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 103 | Kusakabe, Kyohei (1500) | Won 2-1 | +161590 |
| 2legacy | 122 | Pier, Alex (1519) | Won 2-0 | +171607 |
| 3legacy | 35 | Le, Michael (1496) | Won 2-1 | +161623 |
| 4legacy | 402 | Lee, Hugo (1500) | Won 2-1 | +161639 |
| 5legacy | 12 | Ryder, Sean (1632) | Lost 0-2 | -181621 |
| 6legacy | 149 | Hatfield, Jesse (1629) | Lost 1-2 | -181603 |
| 7legacy | 201 | Jeziorski, Matt (1537) | Won 2-0 | +161619 |
| 8legacy | 91 | Surber, Wesley M (1544) | Lost 1-2 | -191600 |
| top | average opponent: 1545record: 5-3 | new rating: 1600 | ||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4legacy | 113 | Cordell, Robbie (1645) | Won 2-0 | +211521 |
| 5legacy | 42 | Noble, Mike (1607) | Lost 1-2 | -171504 |
| 6legacy | 122 | Black, Samuel (1870) | Won 2-1 | +251529 |
| 7legacy | 53 | Kessel, Jens (1658) | Won 2-1 | +201549 |
| 8legacy | 50 | Usary, Marsh (1548) | Won 2-0 | +181567 |
| 9legacy | 11 | Barrentine, Scott (1819) | Lost 1-2 | -141553 |
| 10legacy | 26 | Magby, Mike (1590) | Won 2-0 | +191572 |
| 11legacy | 18 | Coqueiro, Rafael S (1607) | Lost 1-2 | -171555 |
| 12legacy | 40 | Smelski, Geoffrey T (1575) | Won 2-0 | +181573 |
| 13legacy | 33 | Boggs, Thor (1609) | Won 2-1 | +191592 |
| 14legacy | 19 | Wu, Colin (1580) | Lost 1-2 | -181574 |
| 15legacy | 25 | Becvar, Nick (1640) | ID | 01574 |
| top | average opponent: 1646record: 7-4-1 | new rating: 1574 | ||