Kubo, Jason
Current rating: 1559
Record: 29-30
| Grand Prix Reno 2020 (THB limited) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 76 | Garcia, Christopher 6272 (1891) | Won 2-0 | +241596 |
| 3sealed | 63 | Merlin, Nicholas (1577) | Won 2-0 | +171613 |
| 4sealed | 11 | Murch, Andrew (1678) | Lost 0-2 | -171596 |
| 5sealed | 99 | Russo, Spencer (1616) | Lost 1-2 | -171579 |
| 6sealed | 186 | Clark, Scott (1488) | Lost 1-2 | -201559 |
| top | average opponent: 1650record: 2-3 | new rating: 1559 | ||
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 357 | Miller, Ariana (1425) | Lost 1-2 | -201539 |
| 2sealed | 372 | Conrad-Shah, Leo (1482) | Won 2-0 | +161555 |
| 3sealed | 481 | Curie, Jeremy (1564) | Lost 1-2 | -171538 |
| 4sealed | 488 | Fullmer, David (1451) | Won 2-0 | +161554 |
| 5sealed | 419 | Von Euw, Michael (1411) | Won 2-0 | +151569 |
| 6sealed | 299 | Adams, Shawn (1470) | Won 2-0 | +171586 |
| 7sealed | 130 | Waxer, Nathan (1824) | Lost 0-2 | -141572 |
| top | average opponent: 1518record: 4-3 | new rating: 1572 | ||
| Grand Prix Seattle 2019 (MH1 limited) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| A1sealed | 347 | Rivera, Tim (1879) | Lost 1-2 | -111480 |
| A2sealed | 623 | Gu, Haozhe (1483) | Lost 0-2 | -181462 |
| B1sealed | 585 | Smith, Matteo (1504) | Won 2-0 | +191481 |
| B2sealed | 287 | Betts, Jonathan (1725) | Won 2-1 | +221503 |
| B3sealed | 243 | Young, Christopher (1508) | Won 2-1 | +181521 |
| B4sealed | 47 | Booth, JT (1783) | Lost 1-2 | -131508 |
| B5sealed | 90 | Schriebman, Robin (1574) | Won 2-0 | +191527 |
| B6sealed | 38 | Stevens, David (1504) | Lost 1-2 | -181509 |
| B7sealed | 111 | Fur, Attila (1840) | Won 2-1 | +241533 |
| B8sealed | 136 | Pence, Matthew (1689) | Won 2-1 | +201553 |
| B9sealed | 483 | Miller, Spencer (1605) | Won 2-1 | +191572 |
| draft | 154 | Campbell, Chantelle (1616) | Won 2-0 | +191591 |
| draft | 132 | Anderson, Neil (1882) | Lost 1-2 | -131578 |
| draft | 142 | Woodward, Jonathan (1810) | Lost 0-2 | -141564 |
| draft | 94 | Espinosa, Ivan (1794) | Lost 1-2 | -131551 |
| draft | 96 | Wong, Benny (1756) | Won 2-0 | +211572 |
| draft | 89 | Kiefer, Quinn (1837) | Lost 1-2 | -131559 |
| top | average opponent: 1693record: 9-8 | new rating: 1559 | ||
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 431 | Mok, Wilson (1782) | Lost 0-2 | -141508 |
| 3sealed | 495 | Mathews, Andrew (1553) | Lost 0-2 | -171491 |
| top | average opponent: 1668record: 0-2 | new rating: 1491 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1557 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2154 | Baglio, Matthew (1670) | Lost 0-2 | -161541 |
| 2sealed | 832 | Humpherys, Nathan (1482) | Won 2-0 | +171558 |
| 3sealed | 924 | Vandermeyden, Michael (1631) | Lost 1-2 | -171541 |
| 4sealed | 810 | Soleau, Shaun (1480) | Lost 1-2 | -191522 |
| top | average opponent: 1566record: 1-3 | new rating: 1522 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 49 | Brum, Cameron (1500) | Won 2-0 | +181531 |
| 2sealed | 410 | Deditius, Daniel (1518) | Won 2-1 | +171548 |
| 3sealed | 216 | Balanag, Carl (1537) | Won 2-1 | +181566 |
| 4sealed | 100 | Sendaydiego, Curt (1598) | Won 2-1 | +191585 |
| 5sealed | 15 | Ho, Alexander (1521) | Won 2-1 | +171602 |
| 6sealed | 28 | Keeth, Christian (1993) | Lost 0-2 | -121590 |
| 7sealed | 30 | Christensen, Kyle (1618) | Lost 1-2 | -171573 |
| 8sealed | 209 | Ruport, Gavin (1505) | Won 2-0 | +171590 |
| 9sealed | 100 | Koessel, Noah (1729) | Lost 0-2 | -161574 |
| 10draft | 41 | McNamara, Brendan (1651) | Won 2-1 | +201594 |
| 11draft | 40 | Martin, Russ (1602) | Lost 0-0 | -181576 |
| 12draft | 36 | McGrayne, Matt (1514) | Lost 0-2 | -191557 |
| top | average opponent: 1607record: 7-5 | new rating: 1557 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 149 | Reynolds-Lynch, Raymi (1517) | Won 2-0 | +181518 |
| 3sealed | 30 | Smith, Sean (1654) | Lost 0-2 | -151503 |
| 4sealed | 111 | Bulmer, Henry (1525) | Won 2-1 | +181521 |
| 5sealed | 63 | O'Toole, Zack (1507) | Won 2-1 | +181539 |
| 6sealed | 51 | Antignano, Joey (1564) | Won 2-1 | +181557 |
| 7sealed | 25 | Weissmann, Birger (1577) | Lost 0-2 | -171540 |
| 8sealed | 62 | Gay, Randall (1745) | Won 2-1 | +211561 |
| 9sealed | 38 | Yao, Chris (1604) | Won 2-0 | +191580 |
| 10draft | 16 | Draxler, Rory (1814) | Lost 0-2 | -141566 |
| 11draft | 137 | Garmon, Daniel (1642) | Lost 0-2 | -161550 |
| 12draft | 176 | Roach, Josh (1533) | Lost 0-2 | -191531 |
| 14draft | 85 | Guest, Thomas (1497) | Lost 1-2 | -181513 |
| top | average opponent: 1598record: 6-6 | new rating: 1513 | ||