Wiedemann, Grant
Current rating: 1634
| Grand Prix Hartford 2018 (modern) | starting rating: 1646 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 422 | Rockwood, Bryan (1500) | Lost 0-2 | -211625 |
| 2modern | 673 | Bourque, Matthew (1316) | Won 2-1 | +131638 |
| 3modern | 412 | Rowland, Chris (1721) | Won 2-1 | +191657 |
| 4modern | 388 | Fortier, Elliot (1672) | Won 2-1 | +181675 |
| 5modern | 230 | Gao, Changsong (1536) | Lost 0-2 | -201655 |
| 6modern | 300 | Riddell, Barry (1472) | Lost 1-2 | -211634 |
| top | average opponent: 1536record: 3-3 | new rating: 1634 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 245 | Truly, Matt (1500) | Won 2-0 | +171559 |
| 2standard | 326 | Taylor, Nick S (1520) | Lost 0-2 | -191540 |
| 3standard | 385 | Williams, Ian (1497) | Won 2-0 | +171557 |
| 4standard | 337 | Silva, Daniel [USA] (1526) | Won 2-1 | +181575 |
| 5standard | 214 | Gilbert, Donovan (1521) | Won 2-0 | +171592 |
| 6standard | 171 | McKinney, Ryan (1598) | Won 2-1 | +181610 |
| 7standard | 50 | Somers, Stu (1640) | Lost 0-2 | -181592 |
| 8standard | 198 | Scovazzo, Michael (1632) | Won 2-1 | +191611 |
| 9standard | 117 | Michael, Kevin (1627) | Won 2-0 | +181629 |
| 10standard | 62 | DeTora, Melissa (1748) | Lost 0-2 | -151614 |
| 11standard | 96 | Adamson, Bill J (1539) | Won 2-0 | +161630 |
| 12standard | 72 | Housman, Myles (1578) | Won 2-1 | +171647 |
| 13standard | 36 | Widstrom, Matt (1613) | Lost 0-2 | -181629 |
| 14standard | 47 | Reelitz, Gregory (1614) | Won 2-0 | +171646 |
| 15standard | 51 | Frias, Lloyd (1657) | Won 2-0 | +191665 |
| 16standard | 41 | Fenstermaker, Dean (1622) | Lost 0-2 | -191646 |
| top | average opponent: 1589record: 11-5 | new rating: 1646 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 65 | Reger, Kyle J (1500) | Won 2-1 | +181518 |
| 2standard | 2 | Propst, Ethan (1518) | Won 2-0 | +181536 |
| 3standard | 22 | Sailer, Jean-Paul (1536) | Won 2-0 | +181554 |
| 4standard | 100 | Kolos, John (1863) | Lost 1-2 | -131541 |
| 5standard | 152 | Janiga, Joseph (1536) | Won 2-0 | +181559 |
| 6standard | 41 | Preston, Derek (1501) | Won 2-0 | +171576 |
| 7standard | 43 | Sauve, Nicholas (1571) | Lost 0-2 | -181558 |
| 8standard | 60 | Boozer, Chris (1635) | Lost 0-2 | -161542 |
| top | average opponent: 1583record: 5-3 | new rating: 1542 | ||