Grossmann, Ben
Current rating: 1477
Record: 5-7
| Grand Prix Portland 2018 (modern) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 493 | Shupe, Samuel (1498) | Won 2-0 | +181483 |
| 2modern | 52 | McBride, Jeremy (1496) | Won 2-1 | +191502 |
| 3modern | 64 | Wijaya, Vidianto (2049) | Lost 0-2 | -91493 |
| 4modern | 411 | Brezina, Joseph (1502) | Won 2-0 | +181511 |
| 5modern | 255 | Dubyk, Dilon (1612) | Lost 0-2 | -161495 |
| 6modern | 290 | Zolovick, Kud (1494) | Lost 0-2 | -181477 |
| average opponent: 1608record: 3-3 | new rating: 1477 | |||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 590 | Sugiyama, Andy (1500) | Lost 0-2 | -181482 |
| 2standard | 510 | Solomon, Ethan (1291) | Won 2-1 | +151497 |
| 3standard | 588 | Rodriguez, Ryan (1549) | Won 2-1 | +191516 |
| 4standard | 300 | Haugh, William (1465) | Lost 0-2 | -191497 |
| 5standard | 591 | Byun, Chong (1636) | Lost 0-2 | -161481 |
| 6standard | 634 | Sprunger, Brock (1571) | Lost 0-2 | -161465 |
| average opponent: 1502record: 2-4 | new rating: 1465 | |||