Culbert, Jeffrey
Current rating: 1474
Record: 4-6
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 229 | Mankins, Patrick (1527) | Won 2-0 | +191480 |
| 2sealed | 159 | Mills, Matthew (1477) | Won 2-1 | +181498 |
| 3sealed | 81 | Juarez Oliva, Fernando Jose (1673) | Lost 0-2 | -151483 |
| 4sealed | 216 | Rhodes, Chris (1536) | Lost 1-2 | -171466 |
| 5sealed | 325 | Johnson, Joey (1544) | Won 2-0 | +201486 |
| 6sealed | 254 | Wiper, Charles (1837) | Lost 1-2 | -121474 |
| average opponent: 1599record: 3-3 | new rating: 1474 | |||
| Grand Prix Dallas-Fort Worth 2011 (MBS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 9 | Beety, John Dale (1386) | Won 2-1 | +161516 |
| 2standard | 216 | Gomez, David (1500) | Lost 1-2 | -181498 |
| 3standard | 205 | Duty, Andrew L (1500) | Lost 0-2 | -181480 |
| 4standard | 433 | Reed, Randy (1436) | Lost 0-2 | -191461 |
| average opponent: 1456record: 1-3 | new rating: 1461 | |||