Stivers, Nathanael J
Current rating: 1521
| Grand Prix Portland 2013 (modern) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 107 | Ridgeway, Victrinia (1500) | Won 2-0 | +181507 |
| 2modern | 145 | Smith, Greg (1736) | Lost 0-1 | -141493 |
| 3modern | 192 | Morgan, Adam (1499) | Won 2-1 | +181511 |
| 4modern | 250 | Morris-Lent, Christopher (1521) | Lost 1-2 | -171494 |
| 5modern | 346 | Myers, Caleb (1720) | Lost 0-2 | -141480 |
| 6modern | 345 | Donelson, Erik (1482) | Won 2-1 | +181498 |
| 7modern | 282 | Stone, Tim (1502) | Won 2-0 | +181516 |
| 8modern | 192 | Davoudi, Mani (1656) | Won 2-0 | +201536 |
| 9modern | 150 | Van Etten, Bart (1689) | Lost 1-2 | -151521 |
| top | average opponent: 1590record: 5-4 | new rating: 1521 | ||
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 83 | Cronin, Andy J (1518) | Won 2-0 | +181521 |
| 3sealed | 105 | Satta-Hutton, Kale (1538) | Won 2-0 | +191540 |
| 4sealed | 35 | Lindsey, Travis M (1554) | Lost 0-2 | -181522 |
| 5sealed | 100 | Demery, Joshua (1533) | Lost 0-2 | -181504 |
| 6sealed | 320 | DeTora, Melissa (1672) | Lost 0-2 | -151489 |
| top | average opponent: 1563record: 2-3 | new rating: 1489 | ||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 132 | Hitzeman-angon, Cedric (1500) | Won 2-0 | +181518 |
| 2sealed | 65 | Gurney, Michael (1698) | Lost 0-2 | -151503 |
| 3sealed | 417 | Koprek, Justin (1516) | Won 2-0 | +181521 |
| 4sealed | 309 | Rennard, Nick (1501) | Lost 1-2 | -181503 |
| 5sealed | 429 | Sififord, Eugene (1498) | Won 2-0 | +181521 |
| 6sealed | 292 | Kubin, Ryan (1519) | Lost 1-2 | -181503 |
| top | average opponent: 1539record: 3-3 | new rating: 1503 | ||