Zimmerman, Tobias
Current rating: 1534
Record: 9-7
| Grand Prix Portland 2018 (modern) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 151 | Barrera, Jacob (1433) | Won 2-1 | +161555 |
| 2modern | 109 | Hunt, Tyson (1521) | Lost 1-2 | -181537 |
| 3modern | 587 | Blais, Ryan (1539) | Won 2-1 | +181555 |
| 4modern | 468 | Garnica, Nathan (1491) | Lost 1-2 | -191536 |
| 5modern | 458 | Doris, John (1541) | Lost 1-2 | -181518 |
| 6modern | 599 | Mereigh, Christopher (1465) | Won 2-0 | +171535 |
| 7modern | 462 | Casey, Timmy (1498) | Lost 0-2 | -191516 |
| 8modern | 379 | Miller, Justin (1484) | Won 2-1 | +181534 |
| average opponent: 1497record: 4-4 | new rating: 1534 | |||
| Grand Prix Seattle 2018 (standard) (RIX standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 79 | Enns, Galen (1409) | Won 2-1 | +161516 |
| 2standard | 82 | Kittinger, Joel (1442) | Won 2-0 | +171533 |
| 3standard | 199 | Garrison, Christopher (1560) | Won 2-1 | +181551 |
| 4standard | 59 | Rodriguez, Brian (1396) | Lost 1-2 | -201531 |
| 5standard | 228 | Wong, Charles (1791) | Lost 1-2 | -141517 |
| 6standard | 335 | Wood, Mac (1518) | Lost 0-2 | -181499 |
| 7standard | 380 | Firsching, Luke (1506) | Won 2-1 | +181517 |
| 8standard | 237 | Konishi, Keahi (1736) | Won 2-0 | +221539 |
| average opponent: 1545record: 5-3 | new rating: 1539 | |||