Grinblat, Jason
Current rating: 1689
Record: 23-14
| Grand Prix Oakland 2013 (M14 limited) | starting rating: 1562 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 349 | Scott-Vargas, Antonio (1500) | Won 2-0 | +171579 |
| 2sealed | 353 | G438, Jack (1518) | Won 2-0 | +171596 |
| 3sealed | 93 | Calvin, Nathan (1643) | Won 2-1 | +181614 |
| 4sealed | 68 | Whitson, Nicholas (1503) | Won 2-1 | +161630 |
| 5sealed | 5 | Jacobson, Mary (1716) | Won 2-0 | +201650 |
| 6sealed | 24 | Lamping, William (1634) | Won 2-1 | +181668 |
| 7sealed | 14 | Penney, Joseph (1668) | Won 2-1 | +181686 |
| 8sealed | 11 | Lew, Michael (1716) | Won 2-0 | +181704 |
| 9sealed | 5 | Stark, Ben S (2172) | Lost 0-2 | -101694 |
| 10draft | 14 | Fulton, Ben (1626) | Lost 0-2 | -191675 |
| 11draft | 12 | Borish, Gregory (1698) | Won 2-0 | +181693 |
| 12draft | 75 | Hopkins, Tyler (1641) | Won 2-1 | +171710 |
| 13draft | 47 | Mercado, Guillermo (1655) | Lost 0-2 | -191691 |
| 14draft | 36 | Chang, Bryant (1621) | Lost 1-2 | -191672 |
| 15draft | 68 | G094, Greyson (1605) | Won 2-1 | +171689 |
| top | average opponent: 1661record: 11-4 | new rating: 1689 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 199 | Bowker, Howard (1500) | Won 2-0 | +181510 |
| 2sealed | 212 | Kessling, Mike (1613) | Won 2-0 | +201530 |
| 3sealed | 101 | Roberts, Rob (1462) | Won 2-1 | +161546 |
| 4sealed | 111 | Cordell, Robbie (1631) | Lost 0-2 | -161530 |
| 5sealed | 191 | campos, alejandro (1541) | Won 2-1 | +181548 |
| 6sealed | 95 | Suarez, Daniel (1702) | Won 2-1 | +211569 |
| 7sealed | 55 | Sadin, Steven (1638) | Won 2-0 | +191588 |
| 8sealed | 26 | Shapiro, Jeremy (1913) | Lost 0-2 | -121576 |
| 9sealed | 47 | Efland, Zach (1789) | Lost 1-2 | -141562 |
| top | average opponent: 1643record: 6-3 | new rating: 1562 | ||
| Grand Prix Daytona Beach 2007 (LRW limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 35 | Marge, Matthew (1462) | Won 2-1 | +181482 |
| 2sealed | 91 | Rivera, Israel (1528) | Won 2-0 | +191501 |
| 3sealed | 102 | Klein, Steven (1536) | Lost 1-2 | -181483 |
| 4sealed | 187 | Sanguinetti, James (1636) | Won 2-1 | +211504 |
| 5sealed | 136 | Heinemann, Adam (1440) | Lost 0-2 | -191485 |
| 6sealed | 155 | Nakajima, Chikara (1697) | Won 2-0 | +221507 |
| 7sealed | 106 | Szleifer, Gadiel (1663) | Lost 1-2 | -151492 |
| top | average opponent: 1566record: 4-3 | new rating: 1492 | ||
| Grand Prix Orlando 2004 (Mirrodin block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 40 | Thompkins, Chad (1500) | Won 2-0 | +181518 |
| 2block | 106 | Vernon, Mark (1518) | Lost 0-2 | -181500 |
| 3block | 104 | Battles, Richard (1500) | Won 2-0 | +181518 |
| 4block | 127 | Fuller, Chris (1519) | Lost 0-2 | -181500 |
| 5block | 145 | Lyon, Kristine (1500) | Lost 0-2 | -181482 |
| 6block | 142 | Adly, Kirolos M (1482) | Lost 0-2 | -181464 |
| top | average opponent: 1503record: 2-4 | new rating: 1464 | ||