Roorda, Zac
Current rating: 1629
Record: 21-10-1 (GP) / 2-6 (professional)
| Grand Prix Minneapolis 2016 (SOI standard) | starting rating: 1639 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 223 | Raway, Peter (1569) | Draw 1-1 | -11638 |
| 4standard | 182 | Malinowski, Mike (1516) | Won 2-1 | +151653 |
| 5standard | 92 | Pals, Kristopher (1570) | Won 2-1 | +171670 |
| 6standard | 47 | Hicks, Jackson (1570) | Lost 0-2 | -201650 |
| 7standard | 135 | Schmitz, Christopher (1578) | Won 2-1 | +171667 |
| 8standard | 76 | Cloyd, Jeremy (1637) | Lost 0-1 | -191648 |
| 9standard | 157 | Hammes, James (1571) | Lost 0-1 | -191629 |
| top | average opponent: 1573record: 3-3-1 | new rating: 1629 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1631 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 329 | Miller, Nathan (1416) | Won 2-0 | +141645 |
| 3modern | 445 | Anderson, Tyler (1539) | Won 2-0 | +161661 |
| 4modern | 91 | Govitz, Larry (1553) | Won 2-0 | +161677 |
| 5modern | 51 | Boggemes, Stephen (1774) | Lost 0-2 | -161661 |
| 6modern | 270 | Mackl, Valentin (1936) | Lost 1-2 | -131648 |
| 7modern | 429 | Brown, James (1401) | Won 2-1 | +131661 |
| 8modern | 324 | Jarman, Josh (1559) | Won 2-0 | +161677 |
| 9modern | 170 | Younger, Alejandro (1542) | Won 2-0 | +161693 |
| 10modern | 90 | Yeh, Chih-Cheng (1863) | Lost 1-2 | -151678 |
| 11modern | 243 | Duran-Rupert, Cesar (1584) | Lost 0-2 | -201658 |
| 12modern | 244 | Comminos, Bill (1585) | Lost 0-2 | -191639 |
| top | average opponent: 1614record: 6-5 | new rating: 1639 | ||
| Pro Tour Dragons of Tarkir (DTK standard) | starting rating: 1702 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 18 | Takimura, Kazuyuki (1931) | Lost 1-2 | -141688 |
| 2draft | 105 | Balakin, Dmitry (1547) | Lost 1-2 | -211667 |
| 3draft | 92 | Mowshowitz, Zvi (1937) | Lost 0-2 | -131654 |
| 4standard | 185 | Roman, Valentin (1460) | Won 2-0 | +151669 |
| 5standard | 173 | Moulton, Jesse (1817) | Lost 0-2 | -161653 |
| 6standard | 182 | Morris-Lent, Christopher (1565) | Won 2-1 | +171670 |
| 7standard | 176 | Itodani, Tetsurou (1561) | Lost 1-2 | -201650 |
| 8standard | 161 | Martin, Maxime (1584) | Lost 1-2 | -191631 |
| top | average opponent: 1675record: 2-6 | new rating: 1631 | ||
| Grand Prix Omaha 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 342 | Farrell, Michael J (1500) | Won 2-0 | +181518 |
| 2modern | 18 | Neidecker, Jake (1518) | Won 2-0 | +181536 |
| 3modern | 35 | Wilt, Carl (1410) | Won 2-1 | +161552 |
| 4modern | 114 | Donnan, Blake (1639) | Won 2-1 | +191571 |
| 5modern | 22 | Hartman, Reed (1701) | Won 2-1 | +211592 |
| 6modern | 14 | Buss, John (1559) | Lost 0-2 | -191573 |
| 7modern | 59 | Abraham, Matthew (1505) | Won 2-1 | +171590 |
| 8modern | 16 | Binek, Alex (1680) | Won 2-0 | +191609 |
| 9modern | 19 | Schuett, Court (1828) | Won 2-1 | +221631 |
| 10modern | 8 | Kaplan, Louis (1966) | Won 2-1 | +241655 |
| 11modern | 7 | Aye, Gareth (1804) | Won 2-1 | +211676 |
| 12modern | 4 | Faley, Lewk (1829) | Won 2-1 | +211697 |
| 13modern | 1 | Lipp, Scott (2004) | Won 2-1 | +231720 |
| 14modern | 1 | Maynard, Pascal (1976) | ID | 01720 |
| 15modern | 3 | Berrios, Stephen (1948) | ID | 01720 |
| Qmodern | Paton, Jon (1709) | Lost 0-2 | -181702 | |
| top | average opponent: 1723record: 12-2-2 | new rating: 1702 | ||