Robertson, Jacob
Current rating: 1381
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1412 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 180 | Byers, Tonya (1556) | Lost 1-2 | -161396 |
| 2standard | 454 | Kline, Chris (1416) | Lost 0-2 | -171379 |
| 3standard | 671 | Blanchard, Noah (1478) | Won 2-1 | +191398 |
| 4standard | 520 | Carleton, Peter (1448) | Lost 0-1 | -171381 |
| top | average opponent: 1475record: 1-3 | new rating: 1381 | ||
| Grand Prix Salt Lake City 2014 (M15 limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 42 | Pigg, Conner (1445) | Lost 1-2 | -181427 |
| 2sealed | 229 | Olson, Dana (1482) | Lost 0-2 | -171410 |
| 3sealed | 380 | Colvin, Robert (1431) | Won 2-1 | +181428 |
| 4sealed | 347 | Rubin, Aaron 2 (1505) | Lost 0-2 | -161412 |
| top | average opponent: 1466record: 1-3 | new rating: 1412 | ||
| Grand Prix Salt Lake City 2012 (DKA standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 200 | Paris, Scott (1500) | Lost 0-2 | -181482 |
| 2standard | 415 | Lopez, Raymond (1414) | Lost 1-2 | -191463 |
| 3standard | 459 | Howa, Dustin (1464) | Lost 0-2 | -181445 |
| top | average opponent: 1459record: 0-3 | new rating: 1445 | ||