Gain, Jason
Current rating: 1476
Record: 19-22-1
| Grand Prix Sydney 2019 (RNA limited) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 152 | Rivetti, Filippo (1420) | Won 2-1 | +171469 |
| 2sealed | 31 | He, Jennifer (1482) | Lost 0-2 | -171452 |
| 3sealed | 174 | Breeze, Janna (1499) | Won 2-0 | +181470 |
| 4sealed | 61 | Diaz, Ariel (1454) | Won 2-0 | +181488 |
| 5sealed | 103 | Aplin, Steven (1734) | Won 2-1 | +231511 |
| 6sealed | 59 | Hearn, Michael (1540) | Lost 0-2 | -181493 |
| 7sealed | 50 | Brumby, Gene (1530) | Lost 0-2 | -171476 |
| top | average opponent: 1523record: 4-3 | new rating: 1476 | ||
| Grand Prix Sydney 2014 (M15 limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 85 | O'Neill, Hannah (1498) | Lost 1-2 | -171427 |
| 2sealed | 217 | Reid, James (1594) | Won 2-0 | +211448 |
| 3sealed | 245 | Fitzpatrick, Adam (1434) | Lost 1-2 | -181430 |
| 4sealed | 253 | Yao, Jeremy (1467) | Lost 1-2 | -181412 |
| 5sealed | 303 | Binskin, Nathan (1464) | Won 2-0 | +191431 |
| 6sealed | 215 | Grisold, Lachlan (1485) | Won 2-1 | +191450 |
| 7sealed | 158 | Hu, Sean (1495) | Won 2-1 | +191469 |
| 8sealed | 147 | Graham, Aaron [AUS] (1515) | Lost 0-2 | -171452 |
| top | average opponent: 1494record: 4-4 | new rating: 1452 | ||
| Grand Prix Sydney 2013 (RTR limited) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 139 | Cameron, Maitland (1646) | Lost 0-2 | -141419 |
| 2sealed | 218 | Brown, Clarrie (1470) | Lost 0-2 | -171402 |
| 3sealed | 262 | Thomson, Iain (1464) | Won 2-1 | +191421 |
| 4sealed | 265 | Yeoh, Garry (1497) | Won 2-1 | +191440 |
| 5sealed | 185 | Hussain, Imraan (1503) | Won 2-0 | +191459 |
| 6sealed | 106 | Cusack, Benedict (1595) | Lost 1-2 | -151444 |
| top | average opponent: 1529record: 3-3 | new rating: 1444 | ||
| Grand Prix Sydney 2010 (SOM limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 93 | Woodward, Stephen (1470) | Lost 1-2 | -171428 |
| 2sealed | 112 | Lawrence, Patrick (1482) | Won 2-0 | +191447 |
| 3sealed | 104 | Benson, Max (1488) | Lost 1-2 | -171430 |
| 4sealed | 166 | Hoskin, Elliot (1482) | Won 2-0 | +191449 |
| 5sealed | 129 | Gray, Scott (1582) | Lost 0-2 | -161433 |
| top | average opponent: 1501record: 2-3 | new rating: 1433 | ||
| Grand Prix Brisbane 2004 (COK limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 23 | Li, Kelvin (1500) | Lost 1-2 | -181462 |
| 2sealed | 48 | McPherson, Scott (1482) | Lost 0-2 | -171445 |
| 3sealed | 79 | Shepperd, Rodney (1464) | Won 2-0 | +181463 |
| 4sealed | 90 | Stasiuk, Luke (1482) | Lost 0-2 | -181445 |
| top | average opponent: 1482record: 1-3 | new rating: 1445 | ||
| Grand Prix Sydney 2003 (MRD limited) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 37 | Goding, Kris (1500) | Lost 1-2 | -181480 |
| 2sealed | 85 | Lou, Michael (1481) | Lost 0-2 | -181462 |
| 3sealed | 103 | Grant, Michael [AUS] (1465) | Won 2-0 | +181480 |
| 4sealed | 106 | Armstrong, Matthew (1481) | Draw 1-1 | 01480 |
| 5sealed | 108 | O'Keefe, Jai (1482) | Won 2-0 | +181498 |
| 6sealed | 90 | Norton, Mark (1484) | Lost 0-2 | -181480 |
| top | average opponent: 1482record: 2-3-1 | new rating: 1480 | ||
| Grand Prix Brisbane 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 10 | Whale, Timothy (1500) | Lost 0-2 | -181482 |
| 2sealed | 65 | Lundberg, Paul (1482) | Won 2-0 | +181500 |
| 3sealed | 54 | Nimwegen, Brendan (1482) | Lost 1-2 | -181482 |
| 4sealed | 72 | Whale, Kessa (1482) | Won 2-0 | +181500 |
| 5sealed | 64 | Wong, Alan [AUS] (1499) | Won 2-1 | +181518 |
| 6sealed | 48 | Romans, Gregory (1436) | Lost 1-2 | -201498 |
| top | average opponent: 1480record: 3-3 | new rating: 1498 | ||