Riggeal, Nathan
Current rating: 1425
| Grand Prix Prague 2018 (modern) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 399 | Aldrighetti, Fabio (1456) | Won 2-1 | +191430 |
| 2modern | 378 | Gunay, Ilker (1494) | Won 2-1 | +191449 |
| 3modern | 21 | Ristovsky, Tom (1809) | Won 2-1 | +241473 |
| 4modern | 158 | Gast, Andy (1489) | Lost 1-2 | -181455 |
| 5modern | 364 | Vojtko, Radovan (1537) | Lost 1-2 | -161439 |
| 6modern | 320 | Cantero Carrion, Jose Angel (1650) | Lost 0-2 | -141425 |
| top | average opponent: 1573record: 3-3 | new rating: 1425 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1240 | Bell, Nathan (1504) | Lost 0-2 | -181446 |
| 2modern | 1490 | Jones, Kristopher (1482) | Lost 1-2 | -171429 |
| 3modern | 1607 | Grimes, Zachary (1423) | Lost 0-2 | -181411 |
| top | average opponent: 1469record: 0-3 | new rating: 1411 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 60 | PrudHomme, Mario (1469) | Lost 1-2 | -191481 |
| 2legacy | 446 | Campbell, Alex (1482) | Lost 1-2 | -181463 |
| 3legacy | 748 | Harter, Kevin (1464) | Won 2-1 | +181481 |
| 4legacy | 617 | Chen, Eugene (1485) | Lost 0-2 | -171464 |
| top | average opponent: 1475record: 1-3 | new rating: 1464 | ||