Parker, Zach
Current rating: 1570
Record: 38-34-1
| Grand Prix Orlando 2012 (ISD standard) | starting rating: 1581 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 26 | Tanney, Chris (1500) | Won 2-1 | +161597 |
| 2standard | 231 | Roberts, William R (1483) | Lost 1-2 | -201577 |
| 3standard | 248 | Hanna, Nick (1488) | Won 2-1 | +171594 |
| 4standard | 254 | Olson, Wesley (1520) | Lost 1-2 | -201574 |
| 5standard | 355 | Demir, Antonio F (1500) | Won 2-1 | +171591 |
| 6standard | 278 | Netto, Joshua (1435) | Lost 0-2 | -211570 |
| top | average opponent: 1488record: 3-3 | new rating: 1570 | ||
| Grand Prix Daytona Beach 2007 (LRW limited) | starting rating: 1586 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 40 | Davis, Sean (1501) | Won 2-0 | +161602 |
| 3sealed | 18 | Mize, Logan (1520) | Lost 1-2 | -191583 |
| 4sealed | 141 | Bourque, Richard (1485) | Won 2-0 | +161599 |
| 5sealed | 94 | Kastel, Chad (1581) | Lost 1-2 | -181581 |
| top | average opponent: 1522record: 2-2 | new rating: 1581 | ||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1583 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 48 | Connelly, Daniel R (1552) | Won 2-0 | +181601 |
| 4sealed | 55 | Napoli, Phillip (1610) | Lost 0-2 | -181583 |
| 5sealed | 61 | Martel, Jason (1513) | Won 2-0 | +171600 |
| 6sealed | 72 | Gromko, Radoslaw (1701) | Lost 1-2 | -171583 |
| 7sealed | 92 | Walker, Dennis (1526) | Won 2-1 | +171600 |
| 8sealed | 43 | Saucier, Joshua (1560) | Won 2-1 | +181618 |
| 9draft | 6 | Neary, Nicholas (1680) | Lost 1-2 | -171601 |
| 10draft | 25 | Sullivan, Patrick (1792) | Won 2-1 | +211622 |
| 11draft | 32 | Krouner, Ken (1641) | Lost 0-2 | -171605 |
| 12draft | 17 | Thode, Jeff (1575) | Lost 1-2 | -191586 |
| top | average opponent: 1615record: 5-5 | new rating: 1586 | ||
| Grand Prix Orlando 2004 (Mirrodin block) | starting rating: 1607 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 65 | Steht, Lee (1647) | Won 2-1 | +191626 |
| 4block | 14 | Rietzl, Paul (1934) | Lost 1-2 | -131613 |
| 5block | 39 | Gray, James (1515) | Won 2-0 | +161629 |
| 6block | 30 | Tate, Jason (1535) | Won 2-1 | +171646 |
| 7block | 36 | Koenig, Joseph (1570) | Won 2-1 | +161662 |
| 8block | 9 | Tabors, Rickey (1555) | Lost 1-2 | -201642 |
| 9block | 27 | Meadors, John (1551) | Lost 1-2 | -191623 |
| 10block | 28 | Brown, Tom (1507) | Lost 1-2 | -201603 |
| 11block | 30 | Fleury, William (1525) | Lost 1-2 | -201583 |
| top | average opponent: 1593record: 4-5 | new rating: 1583 | ||
| Grand Prix Oakland 2004 (DST limited) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 10 | Dykes, James (1519) | Won 2-1 | +171642 |
| 4sealed | 27 | Parker, Alex (1504) | Won 2-0 | +151657 |
| 5sealed | 22 | Alepin, Alexandre (1625) | Lost 1-2 | -191638 |
| 6sealed | 32 | Harvey, Eugene (1952) | Lost 0-2 | -121626 |
| 7sealed | 81 | Ferguson, Charles (1575) | Lost 1-2 | -191607 |
| top | average opponent: 1635record: 2-3 | new rating: 1607 | ||
| Grand Prix Kansas City 2003 (MRD limited) | starting rating: 1648 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 34 | Faulkner, Brant (1608) | Lost 1-2 | -181630 |
| 4sealed | 108 | Berrios, Stephen (1654) | Won 2-0 | +181648 |
| 5sealed | 45 | Bezrukov, Semion (1541) | Won 2-1 | +161664 |
| 6sealed | 30 | Musser, Michael (1685) | Lost 1-2 | -181646 |
| 7sealed | 94 | Kaskel, Brent (1484) | Lost 0-2 | -211625 |
| top | average opponent: 1594record: 2-3 | new rating: 1625 | ||
| Grand Prix Atlanta 2003 (8ED standard) | starting rating: 1670 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 6 | Blume, Marco (1656) | Lost 0-2 | -181652 |
| 5standard | 109 | Boozer, Chris (1501) | Won 2-0 | +151667 |
| 6standard | 51 | Tsai, Tony (1756) | Lost 1-2 | -161651 |
| 7standard | 67 | Irvine, David (1542) | Won 2-1 | +161667 |
| 8standard | 58 | Frazier, Matthew (1624) | Lost 1-2 | -191648 |
| top | average opponent: 1616record: 2-3 | new rating: 1648 | ||
| Grand Prix New Orleans 2003 (extended) | starting rating: 1647 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 6 | Fischer, Adam (1654) | Won 2-0 | +181665 |
| 5extended | 20 | Van Zandt, Andy (1441) | Lost 0-2 | -221643 |
| 6extended | 48 | Woodall, Nathan (1559) | Won 2-0 | +161659 |
| 7extended | 15 | Smith, Alex (1592) | Lost 0-2 | -191640 |
| 8extended | 37 | Edwards, Craig (1576) | Won 2-1 | +171657 |
| 9extended | 26 | Burt, Jarod (1644) | Lost 1-2 | -181639 |
| 10extended | 27 | Carlisle, Lance (1568) | Won 2-0 | +161655 |
| 11extended | 20 | McGuffin, Max (1611) | Won 2-0 | +171672 |
| 12extended | 18 | Sheets, Derrick (1560) | Draw 1-1 | -21670 |
| 13extended | 13 | Reeves, Neil (1747) | Won 2-0 | +201690 |
| 14extended | 10 | Thies, Brad (1617) | Lost 0-2 | -201670 |
| top | average opponent: 1597record: 6-4-1 | new rating: 1670 | ||
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 134 | Mui, Jonathan (1518) | Won 2-0 | +181543 |
| 3sealed | 12 | Swain, Eric (1536) | Won 2-0 | +181561 |
| 4sealed | 45 | Martell, Tom (1559) | Won 2-0 | +181579 |
| 5sealed | 38 | Schwartz, Greg C (1554) | Won 2-0 | +181597 |
| 6sealed | 2 | Parker, Brock (1589) | Won 2-0 | +171614 |
| 7sealed | 8 | Fabiano, Gerard (1908) | Won 2-1 | +241638 |
| 8sealed | 4 | Krempels, Craig (1683) | Lost 1-2 | -181620 |
| 9rochester | 7 | Kibler, Brian (1997) | Lost 0-2 | -111609 |
| 10rochester | 15 | Gary, Justin (1846) | Won 2-1 | +221631 |
| 11rochester | 17 | Manning, Christopher (1842) | Lost 1-2 | -141617 |
| 12rochester | 27 | Kibler, Brian (1966) | Won 2-1 | +241641 |
| 13rochester | 13 | Sitarski, Matt (1667) | Lost 1-2 | -171624 |
| 14rochester | 9 | Harvey, Eugene (1896) | Won 2-1 | +231647 |
| top | average opponent: 1736record: 9-4 | new rating: 1647 | ||
| Grand Prix Tampa Bay 2002 (TOR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 8 | Diesch, Matthew (1603) | Won 2-0 | +201520 |
| 4sealed | 17 | Canty, Steve (1500) | Won 2-1 | +181538 |
| 5sealed | 2 | Eisel, Nick (1422) | Lost 1-2 | -211517 |
| 6sealed | 53 | Littlefield, Chuck (1639) | Lost 0-2 | -151502 |
| 7sealed | 71 | Hegstad, Brian (1828) | Won 2-0 | +231525 |
| top | average opponent: 1598record: 3-2 | new rating: 1525 | ||