Jacobson, RJ
Current rating: 1434
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 373 | Walker, Justin (1473) | Won 2-1 | +181469 |
| 2sealed | 457 | Paul, Russell (1518) | Lost 0-2 | -171452 |
| 3sealed | 316 | MacDonald, Daniel (1469) | Lost 0-2 | -181434 |
| top | average opponent: 1487record: 1-2 | new rating: 1434 | ||
| Grand Prix Miami 2013 (DGM standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 141 | Doblinger, Blake (1500) | Won 2-1 | +191485 |
| 2standard | 225 | Brown, Jeffrey M (1517) | Won 2-1 | +191504 |
| 3standard | 123 | Xidea, Ronald (1469) | Lost 0-2 | -191485 |
| 4standard | 339 | Herren, Jason (1555) | Lost 1-2 | -171468 |
| 5standard | 319 | McIntire, Lee (1500) | Lost 0-2 | -171451 |
| top | average opponent: 1508record: 2-3 | new rating: 1451 | ||
| Grand Prix Orlando 2012 (ISD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 123 | Sagraves, Maximilian (1518) | Won 2-1 | +181518 |
| 2standard | 132 | Fitchko, William (1580) | Lost 1-2 | -171501 |
| 3standard | 292 | Giguere, Zachary (1500) | Lost 1-2 | -181483 |
| 4standard | 375 | Moore, Carla W (1482) | Won 2-1 | +181501 |
| 5standard | 239 | Mata, Andrew (1480) | Lost 0-2 | -181483 |
| 6standard | 306 | Pastorinni, Luckas (1555) | Lost 1-2 | -171466 |
| top | average opponent: 1519record: 2-4 | new rating: 1466 | ||