Decker, Timothy
Current rating: 1551
Record: 24-24-1
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 109 | Mccormick, Cole (1500) | Won 2-1 | +181547 |
| 2modern | 29 | Wood, Galen (1473) | Won 2-0 | +161563 |
| 3modern | 142 | Willoughby, David (1590) | Lost 0-2 | -171546 |
| 4modern | 113 | Diaz III, Elias (1585) | Won 2-0 | +181564 |
| 5modern | 151 | Pho, Brandon (1499) | Won 2-1 | +171581 |
| 6modern | 102 | Arango, Javier (1589) | Won 2-0 | +181599 |
| 7modern | 49 | Baker, Justin (1757) | Won 2-0 | +211620 |
| 8modern | 26 | Kaukoranta, Ville (1684) | Won 2-1 | +191639 |
| 9modern | 13 | Bohrkircher, Sascha (1651) | Lost 0-2 | -171622 |
| 10modern | 41 | Friedman, Ben (2007) | Lost 0-2 | -121610 |
| 11modern | 44 | Rocha, Sergio (1461) | Won 2-1 | +161626 |
| 12modern | 32 | Vu, Bach (1589) | Lost 0-2 | -191607 |
| 13modern | 62 | Herndon, Scott (1562) | Lost 1-2 | -191588 |
| 14modern | 62 | Shoemaker, John (1500) | Lost 0-2 | -201568 |
| 15modern | 69 | Mills, Cody (1585) | Lost 1-2 | -171551 |
| top | average opponent: 1602record: 8-7 | new rating: 1551 | ||
| Grand Prix New Jersey 2017 (lim) (XLN limited) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 240 | Engelmann, Gregor (1523) | Won 2-0 | +191488 |
| 2sealed | 250 | LePine, Mark (1644) | Lost 1-2 | -151473 |
| 3sealed | 362 | Parsons, Eric (1612) | Won 2-1 | +201493 |
| 4sealed | 246 | Gottlieb, Justin (1573) | Won 2-0 | +201513 |
| 5sealed | 158 | Mulloy, Josh (1688) | Won 2-1 | +211534 |
| 6sealed | 61 | Fortanely, Bobby (1896) | Won 2-0 | +241558 |
| 7sealed | 76 | Twardowski, John (1589) | Draw 1-1 | +11559 |
| 8sealed | 60 | Faherty, Corey (1591) | Won 2-1 | +181577 |
| 9sealed | 34 | Goduti, Keith (1597) | Lost 1-2 | -171560 |
| 10draft | 19 | LaClaire, Larry (1540) | Lost 0-2 | -191541 |
| 11draft | 118 | Ewing, Joseph (1603) | Lost 0-2 | -171524 |
| 12draft | 57 | Mullins, Kaylee (1546) | Lost 0-2 | -171507 |
| 13draft | 156 | Goldberg, Benjamin (1494) | Won 2-1 | +181525 |
| 14draft | 129 | Johnson, Case (1731) | Won 2-1 | +211546 |
| 15draft | 55 | Finnerty, Sean (1587) | Lost 1-2 | -171529 |
| top | average opponent: 1614record: 8-6-1 | new rating: 1529 | ||
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 340 | Smith, Ken (1500) | Won 2-1 | +201458 |
| 2standard | 144 | Mazzant, Jared (1517) | Won 2-0 | +191477 |
| 3standard | 229 | Summerlin, Aubrey (1469) | Lost 1-2 | -191458 |
| 4standard | 407 | Sokol, Greg (1767) | Lost 1-2 | -121446 |
| 5standard | 453 | Taman, Jesse (1504) | Won 2-0 | +191465 |
| 6standard | 286 | Chernikoff, Joshua (1527) | Lost 0-2 | -171448 |
| 7standard | 512 | Kans, Alexander (1438) | Won 2-0 | +181466 |
| 8standard | 357 | Plumridge, Clay (1506) | Won 2-1 | +191485 |
| 9standard | 260 | Provenzano, Luca (1608) | Lost 0-2 | -161469 |
| top | average opponent: 1537record: 5-4 | new rating: 1469 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 186 | Bourroughs, Chris (1718) | Lost 1-2 | -141474 |
| 2sealed | 400 | Cash, Michael (1483) | Lost 0-2 | -181456 |
| 3sealed | 690 | Scannell, Kevin (1451) | Lost 0-2 | -181438 |
| top | average opponent: 1551record: 0-3 | new rating: 1438 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 51 | Arpie, Daniel (1500) | Lost 0-2 | -181482 |
| 2standard | 408 | Hally, Tristan (1450) | Won 2-1 | +171499 |
| 3standard | 410 | Racan, Jeffrey (1571) | Won 2-1 | +201519 |
| 4standard | 243 | DeLange, Jason (1554) | Lost 1-2 | -181501 |
| 5standard | 478 | Baley, Cody (1503) | Won 2-0 | +181519 |
| 6standard | 406 | McCord, Christopher (1416) | Lost 0-2 | -191500 |
| 7standard | 553 | Silberman, Philip (1885) | Lost 1-2 | -121488 |
| top | average opponent: 1554record: 3-4 | new rating: 1488 | ||