Mark, Kenneth
Current rating: 1568
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1627 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 91 | Storms, Robert (1353) | Won 2-0 | +131640 |
| 2legacy | 193 | Thomsen, Sascha (1832) | Lost 0-2 | -141626 |
| 3legacy | 302 | Corliss, Nelson (1506) | Lost 1-2 | -201606 |
| 4legacy | 353 | Akpinar, Tim (1630) | Lost 1-2 | -181588 |
| 5legacy | 379 | Veyrat, Jennilyn (1453) | Lost 0-2 | -201568 |
| top | average opponent: 1555record: 1-4 | new rating: 1568 | ||
| Grand Prix Toronto 2018 (modern) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 338 | Sharp, Matthew (1622) | Won 2-0 | +201541 |
| 2modern | 36 | Zimet, Noam (1500) | Won 2-1 | +171558 |
| 3modern | 172 | Bowe, Mitchell (1632) | Lost 0-2 | -171541 |
| 4modern | 349 | Houle, Simon (1530) | Won 2-0 | +181559 |
| 5modern | 263 | Liu, Yue (1494) | Won 2-0 | +171576 |
| 6modern | 88 | Steffe, Sebastian (1804) | Won 2-1 | +221598 |
| 7modern | 124 | Nakao, Motohiko (1600) | Won 2-1 | +181616 |
| 8modern | 71 | Giannopoulos, Steve (1548) | Won 2-0 | +171633 |
| 9modern | 12 | Keung, Caleb (1828) | Won 2-0 | +211654 |
| 10modern | 6 | Gottstein, Jeff (1733) | Lost 1-2 | -161638 |
| 11modern | 47 | Snook, Adam (1935) | Lost 1-2 | -131625 |
| 12modern | 72 | Gottlieb, Bryan (1767) | Lost 0-2 | -151610 |
| 13modern | 108 | Filimonow, Jamie (1468) | Won 2-1 | +151625 |
| 14modern | 58 | Jones, Chase (1657) | Won 2-0 | +191644 |
| 15modern | 57 | Martin, Bob (1737) | Lost 0-2 | -171627 |
| top | average opponent: 1657record: 10-5 | new rating: 1627 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 529 | Morley, Jim (1569) | Won 2-1 | +191519 |
| 2modern | 446 | Rick, David (1518) | Won 2-0 | +181537 |
| 3modern | 35 | Wilson, Joshua (1465) | Won 2-1 | +171554 |
| 4modern | 48 | Anderson, Tyler (1590) | Lost 0-2 | -171537 |
| 5modern | 240 | Allotta, Jeff (1561) | Won 2-0 | +181555 |
| 6modern | 233 | Funkhouser, Connor (1612) | Lost 0-2 | -171538 |
| 7modern | 506 | Riggs, Nathanial (1581) | Lost 1-2 | -171521 |
| top | average opponent: 1556record: 4-3 | new rating: 1521 | ||