Sumrow, Stephen
Current rating: 1582
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 93 | Martinez, Angel (1603) | Lost 0-2 | -171524 |
| 2legacy | 351 | Kendall, John (1473) | Lost 1-2 | -191505 |
| 3legacy | 447 | Pournoury, Kellen (1464) | Won 2-0 | +181523 |
| 4legacy | 441 | Bauer, David (1781) | Won 2-0 | +221545 |
| 5legacy | 372 | Williams, Garrett (1491) | Won 2-1 | +171562 |
| 6legacy | 200 | Zhang, Peter (1643) | Won 2-0 | +201582 |
| 7legacy | 206 | Reiland, John-Peter (1580) | Won 2-0 | +181600 |
| 8legacy | 79 | Marumo, Tsubasa (1613) | Lost 1-2 | -181582 |
| top | average opponent: 1581record: 5-3 | new rating: 1582 | ||
| Grand Prix Charlotte 2016 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 454 | Monterrey, Paul (1500) | Won 2-0 | +181501 |
| 2modern | 354 | Brown, Brian (1567) | Won 2-0 | +191520 |
| 3modern | 334 | Tracy, Anthony (1483) | Draw 1-1 | 01520 |
| 4modern | 550 | Regev, Tom (1516) | Won 2-1 | +181538 |
| 5modern | 161 | Piedra, Christopher (1683) | Draw 1-1 | +21540 |
| 6modern | 299 | Hardie, Brian (1598) | Lost 1-2 | -171523 |
| 7modern | 468 | Braun, Erik (1501) | Lost 0-2 | -181505 |
| 8modern | 563 | Elliott, Chris (1455) | Won 2-0 | +171522 |
| 9modern | 445 | McNally, John (1581) | Won 2-1 | +191541 |
| top | average opponent: 1543record: 5-2-2 | new rating: 1541 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 963 | Henry, Jon (1500) | Lost 1-2 | -181482 |
| 2sealed | 1045 | Sutton, Ethan (1481) | Won 2-0 | +181500 |
| 3sealed | 258 | Romani, Douglas (1552) | Lost 0-2 | -171483 |
| top | average opponent: 1511record: 1-2 | new rating: 1483 | ||