Petrishen, John
Current rating: 1572
Record: 6-2
| Grand Prix Calgary 2013 (M14 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 113 | Vercammen, Tyler (1500) | Won 0-0 | +181518 |
| 2standard | 181 | McGraw, J.R. (1482) | Won 2-0 | +171535 |
| 3standard | 199 | Howden, Jason (1696) | Lost 1-2 | -151520 |
| 4standard | 274 | White, Grant (1482) | Won 2-0 | +181538 |
| 5standard | 137 | Stenberg, John (1502) | Won 2-0 | +171555 |
| 6standard | 132 | Chesterman, Julian (1480) | Won 2-1 | +171572 |
| 7standard | 104 | Klein, Brendan (1536) | Won 2-1 | +171589 |
| 8standard | 108 | Yu, Ben (1624) | Lost 0-2 | -171572 |
| average opponent: 1538record: 6-2 | new rating: 1572 | |||