Johnston, Ben [AUS]
Current rating: 1459
Record: 20-26-1
| Grand Prix Brisbane 2017 (modern) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 154 | Natarajan, Sukumar (1491) | Won 2-0 | +191471 |
| 4modern | 101 | Hicks, Jason [AUS] (1586) | Lost 0-2 | -161455 |
| 5modern | 194 | Brumby, Gene (1777) | Won 2-0 | +241479 |
| 6modern | 85 | Webster, Patrick (1560) | Lost 0-2 | -171462 |
| 7modern | 119 | Schroder, Aaron (1549) | Won 2-1 | +201482 |
| 8modern | 97 | Schroder, Vaughn (1548) | Lost 1-2 | -171465 |
| 9modern | 118 | Low, Arthur (1523) | Won 2-1 | +191484 |
| 10modern | 76 | Man, Timothy (1615) | Won 2-0 | +201504 |
| 11modern | 85 | Lee, Arnold (1644) | Lost 0-2 | -151489 |
| 12modern | 98 | Ramsey, Yuri (1526) | Won 2-0 | +191508 |
| 13modern | 75 | Hill, Tobias (1583) | Lost 0-2 | -171491 |
| 14modern | 88 | Zegveld, Malcolm (1484) | Lost 1-2 | -181473 |
| 15modern | 91 | Bragato, Riccardo (1685) | Lost 0-2 | -141459 |
| top | average opponent: 1582record: 6-7 | new rating: 1459 | ||
| Grand Prix Sydney 2016 (EMN limited) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 32 | Sun, Yu (1557) | Lost 1-2 | -171459 |
| 4sealed | 249 | Spear, Troy (1483) | Won 2-0 | +191478 |
| 5sealed | 154 | Lee, Shi Tian (2132) | Lost 1-2 | -81470 |
| 6sealed | 305 | Linabury, Simon (1491) | Lost 1-2 | -181452 |
| top | average opponent: 1666record: 1-3 | new rating: 1452 | ||
| Grand Prix Sydney 2015 (BFZ limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 345 | Atkins, Daniel (1500) | Won 2-0 | +191463 |
| 2sealed | 227 | Xuan, Zhi Han (1578) | Won 2-0 | +201483 |
| 3sealed | 122 | Egan, Isaac (1824) | Won 2-1 | +241507 |
| 4sealed | 71 | Derham, Sean (1571) | Won 2-1 | +191526 |
| 5sealed | 42 | Chew, Kelvin (1646) | Lost 0-2 | -151511 |
| 6sealed | 27 | Baxter, Matthew (1571) | Lost 0-2 | -171494 |
| 7sealed | 125 | Pazanin, Tony (1492) | Lost 1-2 | -181476 |
| top | average opponent: 1597record: 4-3 | new rating: 1476 | ||
| Grand Prix Sydney 2014 (M15 limited) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 18 | Wang, Andy (1500) | Lost 1-2 | -171438 |
| 2sealed | 284 | Li, Allan (1484) | Won 2-1 | +181456 |
| 3sealed | 197 | Clenton, Bradley (1500) | Won 2-0 | +191475 |
| 4sealed | 206 | Burger, Lewis (1516) | Won 2-1 | +191494 |
| 5sealed | 91 | Howard, Joshua (1558) | Lost 1-2 | -171477 |
| 6sealed | 120 | Buchan, Lachlan (1477) | Lost 1-2 | -181459 |
| 7sealed | 175 | Webster, Ash (1623) | Lost 0-2 | -151444 |
| top | average opponent: 1523record: 3-4 | new rating: 1444 | ||
| Grand Prix Melbourne 2014 (BNG standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 39 | Donnelly, Katherine (1582) | Won 2-1 | +201469 |
| 3standard | 131 | Osborne, Aiden (1498) | Lost 1-2 | -171452 |
| 4standard | 220 | Amy, Adam (1497) | Won 2-0 | +191471 |
| 5standard | 107 | Tang, Marcus (1535) | Won 2-0 | +191490 |
| 6standard | 63 | Chapman, Craig (1471) | Lost 1-2 | -181472 |
| 7standard | 123 | Almeida, Keith [AUS] (1542) | Lost 0-2 | -171455 |
| top | average opponent: 1521record: 3-3 | new rating: 1455 | ||
| Grand Prix Brisbane 2013 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 149 | Westhoven, Daniel (1500) | Won 2-0 | +181501 |
| 2modern | 14 | Moore, Lachlan (1518) | Won 2-1 | +181519 |
| 3modern | 76 | Cutting, Russell (1561) | Lost 0-2 | -171502 |
| 4modern | 100 | Brace, Jai (1518) | Lost 1-2 | -181484 |
| 5modern | 113 | Mason, Izaak (1432) | Lost 0-2 | -191465 |
| 6modern | 157 | Connelly-Hansen, Allan (1545) | Lost 1-2 | -161449 |
| top | average opponent: 1512record: 2-4 | new rating: 1449 | ||
| Grand Prix Sydney 2013 (RTR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 29 | Kikkawa, Dillon (1540) | Lost 0-2 | -171483 |
| 2sealed | 292 | Lim, Melvin (1482) | Draw 1-1 | 01483 |
| 3sealed | 238 | Giblett, Craig (1482) | Won 2-0 | +181501 |
| 4sealed | 198 | Marsden, Bryce (1503) | Lost 0-2 | -181483 |
| top | average opponent: 1502record: 1-2-1 | new rating: 1483 | ||