Roach, Zachary
Current rating: 1763 (#3329)
Record: 52-33
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1764 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 425 | Wolfe, Andrew (1539) | Won 2-1 | +141778 |
| 2modern | 30 | Parker, Kevin (1581) | Won 2-0 | +141792 |
| 3modern | 362 | Kato, Kensuke (1944) | Won 2-0 | +211813 |
| 4modern | 155 | Bogdanov, Dennis (1640) | Lost 1-2 | -211792 |
| 5modern | 336 | Russell, Marco (1572) | Won 2-0 | +141806 |
| 6modern | 61 | Schmidt, Tyler (1621) | Lost 1-2 | -221784 |
| 7modern | 320 | Lobo Botero, Victor Manuel (1600) | Lost 0-2 | -211763 |
| top | average opponent: 1642record: 4-3 | new rating: 1763 | ||
| Grand Prix Denver 2019 (M20 standard) | starting rating: 1709 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 93 | Morehead, Jack (1420) | Won 2-0 | +131722 |
| 2standard | 69 | Fulgium, James (1689) | Won 2-0 | +171739 |
| 3standard | 59 | Raval, Mahendra (1760) | Lost 1-2 | -171722 |
| 4standard | 187 | Cox, Andrew (1409) | Won 2-1 | +121734 |
| 5standard | 129 | Sommerville, Steve (1545) | Won 2-0 | +151749 |
| 6standard | 88 | Hansen, Cody (1555) | Lost 0-2 | -221727 |
| 7standard | 135 | Ramsay, Adam (1555) | Won 2-1 | +151742 |
| 8standard | 68 | Aiken, Simone (1597) | Won 2-0 | +151757 |
| 9standard | 56 | Horak, Nathan (1573) | Lost 1-2 | -211736 |
| 10standard | 63 | Diesel, John (1678) | Lost 1-2 | -191717 |
| 11standard | 63 | Perryman, Logan (1516) | Lost 0-2 | -221695 |
| 12standard | 65 | Porchas, Justin (1718) | Won 2-1 | +191714 |
| 13standard | 61 | Beaulieu, Sam (1591) | Won 2-1 | +161730 |
| 14standard | 48 | Sanders, Ryan (1650) | Won 2-1 | +161746 |
| 15standard | 51 | Donnan, Blake (1724) | Won 2-0 | +181764 |
| top | average opponent: 1599record: 10-5 | new rating: 1764 | ||
| Grand Prix Denver 2017 (HOU standard) | starting rating: 1670 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 61 | Skipwith, Colin (1447) | Won 2-1 | +141684 |
| 2standard | 236 | Piil, McKennon (1583) | Won 2-0 | +161700 |
| 3standard | 129 | Nelson, Tanner (1663) | Lost 0-2 | -191681 |
| 4standard | 221 | Khare, Anand (1925) | Lost 0-2 | -141667 |
| 5standard | 352 | Magazu, Brian (1564) | Lost 0-2 | -191648 |
| 6standard | 359 | Paasch, Raymond (1500) | Won 2-1 | +151663 |
| 7standard | 268 | Christie, Bram (1497) | Won 2-1 | +151678 |
| 8standard | 245 | Goodwin, Luke (1796) | Won 2-0 | +201698 |
| 9standard | 130 | Woods, Conley (1610) | Won 2-0 | +161714 |
| 10standard | 144 | Feng, Hans (1655) | Won 2-0 | +171731 |
| 11standard | 122 | Poglodzinski, John (1551) | Lost 0-2 | -211710 |
| 12standard | 89 | Zhang, Bolun (1743) | Won 2-0 | +191729 |
| 13standard | 84 | Cho, Justin (1610) | Lost 1-2 | -201709 |
| 14standard | 113 | Frazier, Gene (1605) | Lost 1-2 | -201689 |
| 15standard | 114 | Woodward, Warren (1807) | Won 2-1 | +201709 |
| top | average opponent: 1637record: 9-6 | new rating: 1709 | ||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1583 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 152 | Vineza, James Adrian (1500) | Lost 1-2 | -201563 |
| 2modern | 895 | Bilger, Collin (1487) | Won 2-1 | +171580 |
| 3modern | 1247 | Dyer, Mason (1561) | Won 2-0 | +171597 |
| 4modern | 966 | Re, Joseph (1337) | Won 2-0 | +141611 |
| 5modern | 532 | Cornett, Thomas (1607) | Won 2-1 | +181629 |
| 6modern | 2130 | Blomquist, Kyle (1566) | Won 2-1 | +171646 |
| 7modern | 248 | Galacgac, Daniel (1623) | Won 2-0 | +171663 |
| 8modern | 128 | O'Reilly-Hahn, Cassady (1748) | Lost 1-2 | -161647 |
| 9modern | 221 | Spanjers, John (1533) | Won 2-0 | +161663 |
| 10modern | 186 | Mason, Greg (1647) | Won 2-0 | +171680 |
| 11modern | 127 | Gareau, Philippe (1712) | Won 2-0 | +191699 |
| 12modern | 40 | Raniga, Jitesh (1714) | Won 2-0 | +181717 |
| 13modern | 43 | Diesel, John (1704) | Lost 0-2 | -181699 |
| 14modern | 62 | Cohen, Brendan (1723) | Lost 1-2 | -181681 |
| 15modern | 125 | Walter, Royce (2040) | Lost 1-2 | -111670 |
| top | average opponent: 1633record: 10-5 | new rating: 1670 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1580 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 573 | Wysocki, Eric (1419) | Won 2-1 | +151595 |
| 2legacy | 256 | Coleman, Jonathan (1416) | Won 2-0 | +151610 |
| 3legacy | 223 | DiMaggio, Matthew (1590) | Lost 1-2 | -191591 |
| 4legacy | 593 | Miller, Chad (1443) | Lost 1-2 | -211570 |
| 5legacy | 952 | Lew, Michael (1620) | Won 2-0 | +191589 |
| 6legacy | 559 | Chen, Alexander (1565) | Lost 0-2 | -181571 |
| 7legacy | 795 | Pritt, Matthew (1517) | Won 2-1 | +171588 |
| 8legacy | 424 | Goss, Riley (1526) | Won 2-1 | +171605 |
| 9legacy | 302 | Cozad, Brandon (1373) | Lost 0-2 | -221583 |
| top | average opponent: 1497record: 5-4 | new rating: 1583 | ||
| Grand Prix Denver 2016 (KLD standard) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 298 | Rubey, Charles (1500) | Won 2-0 | +161588 |
| 2standard | 69 | Graber, Nathan (1532) | Won 2-1 | +171605 |
| 3standard | 307 | Meeker, Lauren (1535) | Won 2-1 | +171622 |
| 4standard | 127 | Younger, Alejandro (1634) | Won 2-0 | +181640 |
| 5standard | 32 | Houseworth, Erik (1604) | Lost 0-0 | -191621 |
| 6standard | 171 | Santana, Robert (1772) | Lost 1-2 | -151606 |
| 7standard | 318 | Wong, Daniel (1627) | Lost 0-2 | -171589 |
| 8standard | 325 | Hill, Tyler (2134) | Lost 0-2 | -91580 |
| top | average opponent: 1667record: 4-4 | new rating: 1580 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 175 | Sanders, Robert (1536) | Won 2-0 | +181543 |
| 2sealed | 57 | Brown, Christopher (1518) | Lost 0-2 | -181525 |
| 3sealed | 159 | Huff, Gregory (1446) | Won 2-0 | +161541 |
| 4sealed | 130 | London, Michael (1426) | Won 2-1 | +161557 |
| 5sealed | 114 | Bain, Christopher (1537) | Lost 1-2 | -181539 |
| 6sealed | 126 | Soules, Daniel (1353) | Won 2-1 | +151554 |
| 7sealed | 67 | Keithley, Gregg (1536) | Won 2-0 | +171571 |
| 8sealed | 71 | Duron, Jordan (1564) | Won 2-1 | +181589 |
| 9sealed | 56 | Lewis, Donald (1611) | Lost 1-2 | -171572 |
| top | average opponent: 1503record: 6-3 | new rating: 1572 | ||
| Grand Prix Salt Lake City 2014 (M15 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 47 | Hofmann, Michael (1500) | Won 2-0 | +181518 |
| 2sealed | 70 | Steele, Ryan (1518) | Won 2-1 | +181536 |
| 3sealed | 167 | Sullivan, Cameron (1747) | Lost 1-2 | -141522 |
| 4sealed | 130 | Luke, Logan (1556) | Won 2-1 | +181540 |
| 5sealed | 184 | Muranaka, Aaron (1747) | Won 2-0 | +221562 |
| 6sealed | 82 | Hartman, Benjamin (1552) | Lost 1-2 | -181544 |
| 7sealed | 154 | Logsdon, Jim (1495) | Lost 1-2 | -191525 |
| top | average opponent: 1588record: 4-3 | new rating: 1525 | ||