Diener, Matthew
Current rating: 1593
Record: 27-25
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 101 | Lampkin, Patrick (1629) | Won 2-1 | +181614 |
| 4sealed | 55 | Pearlman, Steven (1547) | Lost 0-2 | -191595 |
| 5sealed | 193 | Melander, Scott (1459) | Lost 1-2 | -201575 |
| 6sealed | 232 | Zhuo, David (1743) | Won 2-0 | +211596 |
| 7sealed | 104 | Sterner, Marcus (1534) | Won 2-0 | +171613 |
| 8sealed | 147 | Krysiak, Steven (1519) | Lost 1-2 | -201593 |
| top | average opponent: 1572record: 3-3 | new rating: 1593 | ||
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1605 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 195 | Hovey, Dylan (1553) | Won 2-1 | +171622 |
| 2legacy | 3 | Nguyen, Philips (1545) | Lost 1-2 | -201602 |
| 3legacy | 247 | Ablack, Mukesh (1607) | Lost 1-2 | -171585 |
| 4legacy | 367 | Lewis, Alex (1398) | Won 2-0 | +141599 |
| 5legacy | 327 | Shillingburg, TJ (1527) | Won 2-0 | +171616 |
| 6legacy | 191 | Oliver, Charles (1496) | Lost 1-2 | -201596 |
| top | average opponent: 1521record: 3-3 | new rating: 1596 | ||
| Grand Prix New Jersey 2019 (RNA limited) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 304 | Halmagyi, Joshua (1717) | Won 2-0 | +231480 |
| 4sealed | 133 | Jones, Kevin (1948) | Won 2-1 | +261506 |
| 5sealed | 34 | Caramenico, Phillip (1545) | Won 2-1 | +181524 |
| 6sealed | 15 | Weaver, James (1765) | Won 2-1 | +231547 |
| 7sealed | 11 | Schriever, Daniel (1800) | Lost 1-2 | -141533 |
| 8sealed | 67 | Burston, Pete (1609) | Won 2-0 | +201553 |
| 9sealed | 26 | McLaughlin, Morgan (2001) | Lost 1-2 | -111542 |
| 10draft | 97 | Cruz, Lucas (1814) | Won 2-1 | +231565 |
| 11draft | 10 | West, Matthew (1698) | Won 2-0 | +211586 |
| 12draft | 116 | Rountree, Collin (1920) | Lost 1-2 | -131573 |
| 13draft | 42 | Esposito, Evan (2006) | Lost 0-2 | -101563 |
| 14draft | 104 | Jao, Jeff (1800) | Won 2-1 | +221585 |
| 15draft | 93 | Morphis, James (1680) | Won 2-0 | +201605 |
| top | average opponent: 1793record: 9-4 | new rating: 1605 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 70 | Kaskan, Zachary (1555) | Lost 1-2 | -171475 |
| 2sealed | 577 | Beckman, Dan (1482) | Lost 0-2 | -181457 |
| top | average opponent: 1519record: 0-2 | new rating: 1457 | ||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 535 | Ready, Jimmy (1500) | Lost 0-0 | -191510 |
| 2sealed | 872 | Green, Sam (1482) | Lost 1-2 | -181492 |
| top | average opponent: 1491record: 0-2 | new rating: 1492 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 106 | Hakim, Joshua (1500) | Won 2-1 | +171569 |
| 3standard | 34 | Pendergast, Thomas (1481) | Lost 0-2 | -201549 |
| 4standard | 373 | Mullin, Geoff (1481) | Won 2-0 | +171566 |
| 5standard | 304 | Alatis, Eric (1535) | Lost 1-2 | -191547 |
| 6standard | 447 | Rudolph, Jacob (1518) | Lost 1-2 | -181529 |
| top | average opponent: 1503record: 2-3 | new rating: 1529 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 202 | Wyatt, Darrell (1500) | Won 2-0 | +171551 |
| 2sealed | 124 | Berni, Roberto (1584) | Won 2-0 | +191570 |
| 3sealed | 74 | Laehn, Taylor (1477) | Lost 0-2 | -201550 |
| 4sealed | 129 | Leveille, Tom (1504) | Won 2-1 | +171567 |
| 5sealed | 142 | Ciffo, Alfred (1541) | Won 2-1 | +181585 |
| 6sealed | 88 | Blankenship, Arthur (1553) | Lost 1-2 | -191566 |
| 7sealed | 79 | Ford, Jason (1774) | Lost 1-2 | -141552 |
| top | average opponent: 1562record: 4-3 | new rating: 1552 | ||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 3extended | 155 | Li, Phillip (1580) | Won 1-0 | +191518 |
| 4extended | 90 | Wolloch, Adam (1557) | Won 2-1 | +191537 |
| 5extended | 44 | Nicolo, Paul (1597) | Lost 1-2 | -171520 |
| 6extended | 52 | Cuvelier, John (1598) | Won 2-0 | +191539 |
| 7extended | 25 | Schwartz, Gabriel (1795) | Won 2-0 | +231562 |
| 8extended | 18 | Hall, Zack (1910) | Lost 1-2 | -121550 |
| 9extended | 38 | Chilcot, Michael (1639) | Lost 1-2 | -161534 |
| top | average opponent: 1668record: 4-3 | new rating: 1534 | ||
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 43 | Ivanston, Maxim (1500) | Won 2-1 | +181518 |
| 2sealed | 49 | Butcher, Christopher (1500) | Lost 1-2 | -181500 |
| 3sealed | 206 | DeLorenzo, Vincent (1444) | Won 2-0 | +171517 |
| 4sealed | 222 | Connor, Taylor P (1516) | Lost 1-2 | -181499 |
| top | average opponent: 1490record: 2-2 | new rating: 1499 | ||