Black, Ruell
Current rating: 1402
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 159 | Bartlett, Ethan (1578) | Lost 0-2 | -151419 |
| 3sealed | 482 | Seymour, Dustin (1499) | Lost 0-2 | -171402 |
| top | average opponent: 1538record: 0-2 | new rating: 1402 | ||
| Grand Prix Phoenix 2018 (modern) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 90 | Shizuma, Kengo (1451) | Lost 1-2 | -191469 |
| 3modern | 476 | Douglass, Mark (1506) | Lost 0-2 | -171452 |
| 4modern | 479 | Arnson, Fritz (1478) | Lost 1-2 | -181434 |
| top | average opponent: 1478record: 0-3 | new rating: 1434 | ||
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 51 | Rowen, Luke (1500) | Won 2-0 | +181518 |
| 2sealed | 158 | Howland, Spencer (1775) | Lost 1-2 | -131505 |
| 3sealed | 407 | Niday, Lucas (1568) | Lost 1-2 | -171488 |
| top | average opponent: 1614record: 1-2 | new rating: 1488 | ||