Fredrickson, Jeffery
Current rating: 1540
Record: 7-5-1
| Grand Prix Hartford 2018 (modern) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 507 | Jones, James (1378) | Lost 1-2 | -201497 |
| 2modern | 536 | Balfour, Troy (1414) | Lost 1-2 | -201477 |
| 3modern | 775 | Flowers, John (1464) | Won 2-0 | +181495 |
| 4modern | 718 | Alzate, Ameth (1482) | Won 2-0 | +181513 |
| 5modern | 544 | Marshall, Jonathan (1485) | Won 2-1 | +171530 |
| 6modern | 368 | Carle, Ian (1789) | Won 2-1 | +231553 |
| 7modern | 346 | Whitsitt, Ryan (1825) | Lost 0-2 | -131540 |
| average opponent: 1548record: 4-3 | new rating: 1540 | |||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 305 | Crider, Greg J (1461) | Won 2-1 | +171517 |
| 2legacy | 315 | Kelley, Bobby (1451) | Lost 0-2 | -191498 |
| 3legacy | 413 | Knappen, Eric (1483) | Won 2-0 | +181516 |
| 4legacy | 208 | Gleicher, David (1578) | Draw 1-1 | +11517 |
| 5legacy | 256 | Bessler, BJ (1520) | Won 2-1 | +181535 |
| 6legacy | 174 | Pozsgay, Michael (1551) | Lost 0-2 | -181517 |
| average opponent: 1507record: 3-2-1 | new rating: 1517 | |||