Johnston, Craig
Current rating: 1451
| Grand Prix Portland 2018 (modern) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 564 | Fauth, Sam (1500) | Won 2-1 | +171543 |
| 2modern | 31 | Dodge, Calvin (1517) | Lost 0-2 | -181525 |
| 3modern | 689 | Cartier, Matthew (1512) | Lost 0-2 | -181507 |
| 4modern | 675 | Silverstein, Joshua (1483) | Lost 1-2 | -191488 |
| 5modern | 698 | Johnston, Julian (1483) | Lost 0-2 | -181470 |
| 6modern | 652 | Olgado, Joseph (1422) | Lost 1-2 | -191451 |
| top | average opponent: 1486record: 1-5 | new rating: 1451 | ||
| Grand Prix Seattle 2018 (standard) (RIX standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 345 | Frisbie, Wayne (1500) | Won 2-1 | +191502 |
| 2standard | 4 | Smith, Christopher (1716) | Lost 1-2 | -141488 |
| 3standard | 370 | Worden, Corey (1319) | Won 2-0 | +141502 |
| 4standard | 334 | Claudel, Slater (1747) | Lost 0-2 | -131489 |
| 5standard | 446 | King, Travis (1424) | Lost 0-2 | -191470 |
| 6standard | 480 | Pierce, Chad (1419) | Won 2-0 | +171487 |
| 7standard | 389 | Lam, Bryan (1644) | Won 2-1 | +211508 |
| 8standard | 276 | O'Rourke, Ciaran (1521) | Won 2-1 | +181526 |
| top | average opponent: 1536record: 5-3 | new rating: 1526 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 256 | Eves, Nigel (1553) | Won 2-1 | +191519 |
| 2standard | 77 | Henderson, Matthew (1500) | Won 2-1 | +181537 |
| 3standard | 9 | Madison, Anna (1632) | Lost 0-2 | -171520 |
| 4standard | 236 | Wilson, Alec [USA] (1465) | Lost 0-2 | -191501 |
| 5standard | 500 | Ewing, Conner (1458) | Won 2-1 | +181519 |
| 6standard | 343 | England, Sarah (1598) | Lost 0-2 | -171502 |
| 7standard | 416 | Fancy, Rachel (1467) | Lost 1-2 | -191483 |
| top | average opponent: 1525record: 3-4 | new rating: 1483 | ||