Petkoff, Drew
Current rating: 1505
| Grand Prix Richmond 2014 (modern) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 27 | Nadolny, Brian (1526) | Won 2-1 | +181584 |
| 2modern | 147 | Martinez, Eric (1463) | Lost 0-2 | -211563 |
| 3modern | 541 | Allen, Evan (1537) | Lost 1-2 | -181545 |
| 4modern | 581 | McCarl, Morgan (1362) | Lost 1-2 | -211524 |
| 5modern | 564 | Smith, Alexander 293 (1465) | Lost 0-2 | -191505 |
| top | average opponent: 1471record: 1-4 | new rating: 1505 | ||
| Grand Prix Detroit 2013 (modern) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 65 | Jamieson, Chris [USA] (1467) | Won 2-1 | +161570 |
| 2modern | 146 | Roidt, Joseph P (1517) | Won 0-0 | +171587 |
| 3modern | 13 | Golembiewski, Jason R (1657) | Lost 1-2 | -161571 |
| 4modern | 396 | Coats, Michael (1535) | Won 2-0 | +171588 |
| 5modern | 130 | Mitchell, Zach (1482) | Won 2-0 | +161604 |
| 6modern | 102 | Shunta, Cameron (1571) | Lost 1-2 | -181586 |
| 7modern | 287 | Rochon, Scott (1557) | Won 2-0 | +171603 |
| 8modern | 217 | Tragos, Peter (1617) | Lost 1-2 | -181585 |
| 9modern | 191 | Figueroa, Eddie (1534) | Lost 0-2 | -191566 |
| top | average opponent: 1549record: 5-4 | new rating: 1566 | ||
| Grand Prix Toronto 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 114 | Iyengar, Mark (1500) | Won 2-1 | +181518 |
| 2modern | 151 | DeMond, James (1524) | Lost 1-2 | -181500 |
| 3modern | 231 | Richardson, Justin (1526) | Won 2-1 | +191519 |
| 4modern | 184 | Raposo, Jordan (1518) | Won 2-0 | +181537 |
| 5modern | 197 | Favalaro, Jon (1569) | Won 2-1 | +181555 |
| 6modern | 111 | Seifert, Chris (1525) | Lost 1-2 | -181537 |
| 7modern | 180 | Bekmesian, Chris (1484) | Lost 0-2 | -191518 |
| 8modern | 188 | Trufasiu, Razvan (1503) | Won 2-0 | +171535 |
| 9modern | 136 | Boutin, Jon (1571) | Won 2-1 | +191554 |
| top | average opponent: 1524record: 6-3 | new rating: 1554 | ||