Barker, Jason
Current rating: 1349
Record: 6-13 (GP) / 4-10 (professional)
| Grand Prix Vancouver 2008 (extended) | starting rating: 1416 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 91 | Baker, Michael (1485) | Lost 0-2 | -171399 |
| 2extended | 111 | Tam, Ken (1482) | Lost 1-2 | -171382 |
| 3extended | 149 | Tyabji, Kaz (1461) | Lost 1-2 | -161366 |
| 4extended | 184 | Yee, Daniel (1447) | Lost 0-2 | -171349 |
| top | average opponent: 1469record: 0-4 | new rating: 1349 | ||
| Pro Tour Los Angeles 2005 (extended) | starting rating: 1369 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 88 | Bandou, Junichirou (1851) | Lost 1-2 | -101359 |
| 2extended | 114 | Bornarel, Nicolas (1794) | Won 2-1 | +261385 |
| 3extended | 81 | Glover, Tim (1436) | Lost 0-2 | -171368 |
| 4extended | 132 | Wolfman, Steven (1860) | Lost 0-2 | -101358 |
| 5extended | 131 | Baldellon Robayna, Cesar (1477) | Won 2-1 | +201378 |
| 6extended | 90 | Hoaen, Rich (1967) | Won 2-1 | +281406 |
| 7extended | 88 | Ikeda, Tsuyoshi (1819) | Won 2-1 | +251431 |
| 8extended | 44 | Dietl, Christian (1592) | Lost 1-2 | -151416 |
| top | average opponent: 1724record: 4-4 | new rating: 1416 | ||
| Grand Prix Seattle 2005 (extended) | starting rating: 1390 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 61 | White, Adam (1517) | Lost 0-2 | -161374 |
| 2extended | 146 | Harrison, Lawson (1482) | Won 2-0 | +201394 |
| 3extended | 136 | Kelly, Chris J (1501) | Lost 0-2 | -161378 |
| 4extended | 169 | Atkinson, Kalani (1482) | Won 2-1 | +201398 |
| 5extended | 108 | Gray, Corbett (1485) | Won 2-1 | +201418 |
| 6extended | 65 | Arant, Gary (1517) | Lost 0-2 | -171401 |
| 7extended | 98 | Jordan, G Mark (1501) | Lost 0-2 | -161385 |
| 8extended | 98 | Van der Star, Alex (1482) | Lost 1-2 | -161369 |
| top | average opponent: 1496record: 3-5 | new rating: 1369 | ||
| Pro Tour Osaka 2002 (Odyssey block) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 43 | Nitter, Eivind (1711) | Lost 0-2 | -141469 |
| 2block | 138 | Costigan, Jill (1466) | Lost 0-2 | -181451 |
| 3block | 125 | Blume, Marco (1655) | Lost 0-2 | -151436 |
| 4block | 129 | Chai, Royce Ming Huang (1798) | Lost 1-2 | -111425 |
| 5block | 123 | Bucknell, Jimmy (1437) | Lost 1-2 | -181407 |
| 7block | 99 | Miyazaki, Kensuke (1468) | Lost 1-2 | -171390 |
| top | average opponent: 1589record: 0-6 | new rating: 1390 | ||
| Grand Prix Seattle 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 17 | Otwell, Christopher (1536) | Lost 0-0 | -171483 |
| 2extended | 123 | Phillips Sr., Charles (1482) | Won 0-0 | +181501 |
| 3extended | 62 | Huss, Chris (1500) | Lost 0-0 | -181483 |
| 4extended | 127 | Pooni, Raj (1481) | Won 0-0 | +181501 |
| 5extended | 102 | Woo, Jordan (1500) | Lost 0-0 | -181483 |
| 6extended | 95 | Richardson, Jordan (1482) | Won 0-0 | +181501 |
| 7extended | 75 | Hines, Jim (1501) | Lost 0-0 | -181483 |
| top | average opponent: 1497record: 3-4 | new rating: 1483 | ||