Campbell, Nathan
Current rating: 1478
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 573 | Gary, Jamie (1500) | Won 2-1 | +191495 |
| 2standard | 346 | Crawford, Chad (1516) | Won 2-0 | +181513 |
| 3standard | 65 | Kingery, Ryan (1571) | Lost 1-2 | -171496 |
| 4standard | 346 | Jimena, Andrew (1547) | Lost 1-2 | -171479 |
| 5standard | 478 | Norton, Matthew (1710) | Lost 1-2 | -141465 |
| 6standard | 680 | Simpson, Rusty (1501) | Won 2-1 | +191484 |
| 7standard | 489 | Hardick, Tim (1468) | Won 2-0 | +181502 |
| 8standard | 386 | DiSimone, Lou (1557) | Won 2-1 | +191521 |
| 9standard | 313 | Parker, Matt D (1573) | Won 2-0 | +191540 |
| 10standard | 217 | Callahan, Regan (1547) | Won 2-0 | +181558 |
| 11standard | 173 | Hunter, William (1534) | Lost 0-2 | -191539 |
| 12standard | 152 | Weitz, Benjamin (2019) | Lost 0-2 | -91530 |
| 13standard | 177 | Schultz, Karl (1518) | Lost 1-2 | -191511 |
| 14standard | 178 | Martin, Scot (1587) | Lost 0-2 | -161495 |
| 15standard | 171 | Christie, Simon (1551) | Lost 1-2 | -171478 |
| top | average opponent: 1580record: 7-8 | new rating: 1478 | ||
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 541 | Hook, Joshua (1500) | Lost 0-2 | -191497 |
| 2sealed | 457 | Behringer, Wade (1482) | Lost 0-2 | -181479 |
| 3sealed | 719 | Shaddon, David (1385) | Won 2-0 | +161495 |
| 4sealed | 621 | Hobbs, David (1448) | Lost 1-2 | -191476 |
| top | average opponent: 1454record: 1-3 | new rating: 1476 | ||
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 316 | Devine, Thomas (1488) | Lost 1-2 | -181482 |
| 2standard | 361 | Styers, Roger (1482) | Won 2-1 | +181500 |
| 3standard | 256 | Tarrant, Michael Shane (1499) | Won 2-0 | +181518 |
| 4standard | 200 | Snyder, Brandon (1472) | Won 2-1 | +171535 |
| 5standard | 193 | Palacio, Flaco (1536) | Won 2-0 | +181553 |
| 6standard | 71 | Dougan, Jacob (1530) | Lost 0-2 | -181535 |
| 7standard | 95 | Bugarin, William (1484) | Lost 0-2 | -191516 |
| top | average opponent: 1499record: 4-3 | new rating: 1516 | ||