Matecki, Justin
Current rating: 1603
Record: 34-30-1
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 164 | Sharfman, David (1777) | Draw 1-1 | +41553 |
| 2standard | 215 | Grasu, Alex (1499) | Won 2-0 | +171570 |
| 3standard | 243 | Sinaiba, Michael (1515) | Won 2-1 | +171587 |
| 4standard | 129 | Hazuka, Anthony (1439) | Won 2-0 | +161603 |
| 5standard | 63 | Robinson, Cole (1548) | Won 2-0 | +171620 |
| 6standard | 30 | Watts, Matthew (1671) | Won 2-0 | +181638 |
| 7standard | 16 | Fay, Dylan (1716) | Lost 0-2 | -161622 |
| 8standard | 53 | Bakanovic, Joseph (1549) | Lost 1-2 | -191603 |
| top | average opponent: 1589record: 5-2-1 | new rating: 1603 | ||
| Grand Prix Orlando 2017 (AER limited) | starting rating: 1573 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 577 | Markel, Benjamin (1500) | Won 2-1 | +171590 |
| 2sealed | 776 | Jaskolka, Jason (1632) | Lost 0-2 | -171573 |
| 3sealed | 1012 | Poirier, Robert (1600) | Lost 1-2 | -181555 |
| 4sealed | 1042 | Kelly, Daniel (1456) | Won 2-0 | +161571 |
| 5sealed | 921 | Shipman, Stephen (1401) | Lost 0-2 | -211550 |
| 6sealed | 1016 | Wagner, Evan (1554) | Won 2-0 | +181568 |
| 7sealed | 876 | Botwin, Seth (1500) | Lost 1-2 | -191549 |
| top | average opponent: 1520record: 3-4 | new rating: 1549 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 105 | Shiver, Michael (1542) | Won 2-1 | +181536 |
| 3sealed | 367 | Alen, Myles (1535) | Won 2-0 | +181554 |
| 4sealed | 36 | Schlom, Christoph (1536) | Won 2-1 | +181572 |
| 5sealed | 87 | Ling, Matthew (1722) | Lost 0-2 | -161556 |
| 6sealed | 156 | Ratanacharoensiri, Wyt (1630) | Won 2-0 | +201576 |
| 7sealed | 139 | Lee, Michelle (1595) | Won 2-0 | +181594 |
| 8sealed | 98 | Curran, Brandon (1560) | Lost 1-2 | -191575 |
| 9sealed | 165 | Keesling, Jarrod (1669) | Won 2-1 | +201595 |
| 10draft | 24 | Clunan, Jeremy (1758) | Lost 0-2 | -151580 |
| 11draft | 55 | Somers, Stu (1671) | Won 2-0 | +201600 |
| 12draft | 54 | Schneider, Travis (1749) | Lost 1-2 | -161584 |
| 13draft | 25 | Pardee, Samuel (1975) | Lost 0-2 | -111573 |
| top | average opponent: 1662record: 7-5 | new rating: 1573 | ||
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 201 | Ojeda, Matthew R (1500) | Won 2-1 | +191473 |
| 2standard | 270 | O'Halloran, John (1502) | Won 2-0 | +181491 |
| 3standard | 21 | Mathos, Paul (1535) | Won 2-0 | +191510 |
| 4standard | 56 | Freeman, Michael (1519) | Lost 0-2 | -181492 |
| 5standard | 87 | Dalmau, Onel N (1535) | Won 2-0 | +191511 |
| 6standard | 103 | Lebedowicz, Osyp (1785) | Lost 0-2 | -131498 |
| 7standard | 207 | Contreras, Felipe (1536) | Won 2-1 | +181516 |
| 8standard | 147 | Savage, Dan (1467) | Won 2-0 | +181534 |
| 9standard | 59 | Blankenship, David (1644) | Lost 1-2 | -161518 |
| top | average opponent: 1558record: 6-3 | new rating: 1518 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 169 | Carey, Joey (1592) | Lost 0-2 | -161471 |
| 4sealed | 248 | Glassett, Bradley (1518) | Lost 0-0 | -171454 |
| top | average opponent: 1555record: 0-2 | new rating: 1454 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 166 | Lum, Jonathan (1500) | Won 2-0 | +171540 |
| 3sealed | 102 | Wantz, Brad (1574) | Lost 1-2 | -171523 |
| 4sealed | 253 | McLeod, Wesley (1521) | Lost 1-2 | -181505 |
| 5sealed | 211 | Wing, Daryl (1502) | Lost 0-2 | -181487 |
| top | average opponent: 1524record: 1-3 | new rating: 1487 | ||
| Grand Prix Atlanta 2008 (ALA limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 83 | Tiszai, Brandon (1518) | Won 2-0 | +181538 |
| 3sealed | 109 | Martell, Tom (1715) | Lost 1-2 | -141524 |
| 4sealed | 154 | White, Jon (1523) | Won 2-1 | +181542 |
| 5sealed | 108 | Jacobson, Josh (1620) | Won 2-1 | +191561 |
| 6sealed | 44 | Burnham, Dustin R (1560) | Lost 0-2 | -181543 |
| 7sealed | 79 | James, Jim (1535) | Won 2-0 | +181561 |
| 8sealed | 71 | Erwin, Evan (1513) | Lost 1-2 | -191542 |
| 9sealed | 85 | Crupi, Keith (1482) | Lost 1-2 | -191523 |
| top | average opponent: 1558record: 4-4 | new rating: 1523 | ||
| Grand Prix Daytona Beach 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 94 | Gerrish, Colby (1465) | Won 2-1 | +171517 |
| 3sealed | 99 | Dao, Phu (1605) | Won 2-0 | +201537 |
| 4sealed | 59 | Black, Samuel (1602) | Won 2-0 | +191556 |
| 5sealed | 19 | Reusing, Sean (1521) | Won 2-1 | +171573 |
| 6sealed | 19 | Grace, Tannon (1576) | Lost 0-2 | -181555 |
| 7sealed | 37 | Shapiro, Jeremy (1652) | Lost 0-2 | -161539 |
| 8sealed | 72 | Kruse, Dean (1507) | Lost 1-2 | -191520 |
| top | average opponent: 1561record: 4-3 | new rating: 1520 | ||
| Grand Prix Orlando 2004 (Mirrodin block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 60 | Pesek, Mike (1500) | Won 2-1 | +181518 |
| 2block | 54 | Ballou, Patrick (1466) | Lost 0-2 | -191499 |
| 3block | 103 | Cramb, Andrew (1499) | Won 2-0 | +181517 |
| 4block | 109 | Upham, Bryan (1549) | Lost 0-2 | -171500 |
| 5block | 130 | Tempest, Austyn (1499) | Lost 1-2 | -181482 |
| 6block | 151 | Gilmen, Roy (1482) | Won 2-0 | +181500 |
| 7block | 121 | Hitz, Eric (1500) | Lost 1-2 | -181482 |
| 8block | 97 | Berryhill, Ellison (1483) | Won 2-1 | +181500 |
| top | average opponent: 1497record: 4-4 | new rating: 1500 | ||