Zembruski, Matthew A
Current rating: 1651
Record: 22-14
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1649 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 60 | Willrich, Gregory (1522) | Won 2-1 | +161665 |
| 2sealed | 146 | Lazaro, Andrew (1453) | Lost 0-2 | -221643 |
| 3sealed | 195 | Krol-Muma, Jakub (1431) | Won 2-1 | +141657 |
| 4sealed | 264 | De Biasi, Julio (1633) | Won 2-0 | +181675 |
| 5sealed | 161 | Chyn, Albert (1539) | Won 2-1 | +151690 |
| 6sealed | 66 | Grimes, Dylan (1556) | Lost 1-2 | -201670 |
| 7sealed | 106 | Mabie, Bryan (1615) | Lost 1-2 | -191651 |
| top | average opponent: 1535record: 4-3 | new rating: 1651 | ||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 451 | Canfield, Christopher (1500) | Won 2-1 | +171546 |
| 2sealed | 182 | Griffin, Matthew [USA] (1870) | Won 2-1 | +241570 |
| 3sealed | 59 | Rousseau, Hugo (1518) | Won 2-1 | +171587 |
| 4sealed | 169 | Yakiwchuk, Kyle (1584) | Won 2-0 | +181605 |
| 5sealed | 79 | Bauer, Michael (1499) | Won 2-1 | +161621 |
| 6sealed | 40 | Jacob, Michael (1884) | Lost 0-2 | -131608 |
| 7sealed | 118 | Jacura, Jordie (1597) | Lost 1-2 | -181590 |
| 8sealed | 173 | Phelan, John-Paul (1726) | Won 2-0 | +201610 |
| 9sealed | 71 | Galanty, Amit (1607) | Won 2-1 | +181628 |
| 10sealed | 113 | Sciesinski, Marcin (1738) | Lost 0-2 | -161612 |
| 11draft | 27 | Manuel, Melvin (1577) | Won 2-1 | +171629 |
| 12draft | 114 | Jackson, John (1559) | Won 2-1 | +171646 |
| 13draft | 33 | Pincus, Max (1873) | Lost 0-2 | -141632 |
| 14draft | 54 | Jackson, John (1567) | Won 2-1 | +171649 |
| 15draft | 96 | Lowther, Cameron J (1602) | Lost 1-2 | -191630 |
| 16draft | 57 | Winterhalter, Benjamin (1688) | Won 2-1 | +191649 |
| top | average opponent: 1649record: 11-5 | new rating: 1649 | ||
| Grand Prix Montreal 2011 (M12 limited) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 113 | Delisle, Stephane (1500) | Won 2-1 | +181539 |
| 2sealed | 4 | Clinton, Ben R (1520) | Won 2-0 | +181557 |
| 3sealed | 42 | Adams, Ken (1805) | Lost 0-2 | -141543 |
| 4sealed | 88 | Costa, Matthew (1740) | Lost 0-2 | -141529 |
| 5sealed | 156 | Murphy, Joshua (1618) | Won 2-0 | +191548 |
| 6sealed | 89 | Preda, Ciprian (1472) | Lost 0-2 | -191529 |
| top | average opponent: 1609record: 3-3 | new rating: 1529 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 420 | Elkon, Jacob (1522) | Won 2-0 | +181518 |
| 2sealed | 427 | Moran, Brian C (1538) | Won 2-0 | +191537 |
| 3sealed | 517 | Stein, Richard (1551) | Lost 0-2 | -181519 |
| 4sealed | 531 | Freedman, Jerry (1659) | Won 2-0 | +211540 |
| 5sealed | 449 | Howland, Stephen (1536) | Lost 0-2 | -191521 |
| 6sealed | 588 | Howell, John (1518) | Won 2-0 | +181539 |
| 7sealed | 491 | Bryant, Steven (1541) | Lost 1-2 | -181521 |
| top | average opponent: 1552record: 4-3 | new rating: 1521 | ||