Kotok, Malcolm
Current rating: 1555
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 503 | Morici, Evan (1500) | Won 2-0 | +181536 |
| 2modern | 7 | Osmanbasic, Ednan (1519) | Won 2-0 | +181554 |
| 3modern | 510 | Kurth, Lloyd (1724) | Lost 1-2 | -151539 |
| 4modern | 436 | Comminos, Bill (1473) | Lost 0-2 | -191520 |
| 5modern | 877 | Wisniewski, Cameron (1568) | Won 2-0 | +181538 |
| 6modern | 372 | Thompson, Brad (1351) | Won 2-1 | +151553 |
| 7modern | 369 | Windhorst, Derek (1624) | Won 2-1 | +191572 |
| 8modern | 361 | Davis, Nathan (1624) | Lost 1-2 | -171555 |
| top | average opponent: 1548record: 5-3 | new rating: 1555 | ||
| Grand Prix Montreal 2014 (BNG limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 80 | Szelzki, Jeffrey (1656) | Won 2-1 | +211538 |
| 2sealed | 227 | Vaillant, Nicolas (1510) | Lost 0-2 | -191519 |
| 3sealed | 494 | Hung, Richard (1500) | Won 2-0 | +181537 |
| 4sealed | 289 | Nguyen, Rob (1518) | Lost 0-2 | -191518 |
| top | average opponent: 1546record: 2-2 | new rating: 1518 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 141 | Weidner, Nicholas (1481) | Draw 1-1 | 01500 |
| 2sealed | 395 | Martino, Nick (1481) | Won 2-0 | +171517 |
| 3sealed | 309 | Adams, Erin (1520) | Won 2-0 | +181535 |
| 4sealed | 198 | Smith, Brandon (1592) | Won 2-0 | +191554 |
| 5sealed | 137 | Sekieta, Matthew (1513) | Lost 1-2 | -181536 |
| 6sealed | 226 | Mayotte, Mathieu (1500) | Lost 1-2 | -191517 |
| top | average opponent: 1514record: 3-2-1 | new rating: 1517 | ||