Vigderman, Constantine
Current rating: 1751 (#3830)
Record: 69-47-3
Grand Prix Los Angeles 2002Grand Prix Anaheim 2003Grand Prix Oakland 2004Grand Prix Phoenix 2006Grand Prix Seattle 2009Grand Prix Boston 2009Grand Prix Denver 2011Grand Prix Seattle-Tacoma 2012Grand Prix Denver 2013Grand Prix Albuquerque 2013Grand Prix Las Vegas 2015 (2)Grand Prix Dallas-Fort Worth 2015Grand Prix Denver 2016Grand Prix Las Vegas 2017 (limited)
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1761 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 679 | Carlyon, Matthew (1482) | Won 2-1 | +131774 |
| 2sealed | 384 | Estrada, Carlos (1466) | Lost 0-2 | -231751 |
| 3sealed | 836 | Milivojevic, Marko (1548) | Won 2-0 | +141765 |
| 4sealed | 528 | Yamasaki, Takao (1501) | Won 2-0 | +131778 |
| 5sealed | 331 | Aubel, Tim (1526) | Won 2-1 | +141792 |
| 6sealed | 250 | Stern, Jon (1911) | Lost 0-2 | -161776 |
| 7sealed | 420 | Lindgren, Tommi (1720) | Won 2-1 | +171793 |
| 8sealed | 179 | [anonymous] | Lost 1-2 | -191774 |
| 9sealed | 340 | Lerer, Josef (1512) | Lost 0-2 | -231751 |
| top | average opponent: 1602record: 5-4 | new rating: 1751 | ||
| Grand Prix Denver 2016 (KLD standard) | starting rating: 1689 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 475 | Moore, Zachary (1474) | Won 2-1 | +141703 |
| 2standard | 113 | Drucker, Travis (1453) | Won 2-0 | +141717 |
| 3standard | 29 | Weaver, Zachery (1633) | Won 2-0 | +161733 |
| 4standard | 7 | Kovac, Chase (1880) | Lost 0-2 | -151718 |
| 5standard | 227 | Page, Jonathan (1618) | Won 0-0 | +161734 |
| 6standard | 61 | Rudd, Adin (1529) | Won 2-0 | +141748 |
| 7standard | 81 | Severa, Matt (1881) | Lost 1-2 | -151733 |
| 8standard | 190 | Morris, Gareth (1716) | Won 2-0 | +181751 |
| 9standard | 54 | Tao, Jiachen (1918) | Won 2-1 | +211772 |
| 10standard | 34 | Tousi, Cameron (1539) | Lost 0-2 | -231749 |
| 11standard | 145 | Kimminau, Riley (1611) | Lost 1-2 | -201729 |
| 12standard | 166 | Austria, Aries (1412) | Won 2-0 | +121741 |
| 13standard | 94 | Candib, Aaron (1679) | Won 2-0 | +171758 |
| 14standard | 89 | Severson, Eric (1796) | Won 2-1 | +191777 |
| 15standard | 49 | Huang, Hao-Shan (1897) | Lost 1-2 | -161761 |
| top | average opponent: 1669record: 10-5 | new rating: 1761 | ||
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1651 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 100 | Thiele, Dennis (1447) | Won 2-1 | +141665 |
| 2sealed | 129 | Marina, Alyssa (1518) | Lost 0-1 | -211644 |
| 3sealed | 341 | Morton, Seth (1502) | Won 2-1 | +161660 |
| 4sealed | 427 | Till, Cory (1517) | Won 2-0 | +151675 |
| 5sealed | 330 | Bierig, Braden (1548) | Won 2-1 | +161691 |
| 6sealed | 375 | Johnson, Peter (1884) | Lost 0-2 | -151676 |
| 7sealed | 276 | Caudillo, Zac (1590) | Won 2-1 | +171693 |
| 8sealed | 202 | Wand, Kevin (1645) | Won 2-0 | +171710 |
| 9sealed | 147 | Jacobs, Adam (1564) | Lost 1-2 | -211689 |
| top | average opponent: 1579record: 6-3 | new rating: 1689 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1714 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 246 | Naugle, Arthur (1539) | Lost 0-2 | -211693 |
| 4sealed | 147 | Jones, Zack (1519) | Lost 0-2 | -211672 |
| 5sealed | 276 | Tang, Nicholas (1498) | Lost 0-2 | -211651 |
| top | average opponent: 1519record: 0-3 | new rating: 1651 | ||
| Grand Prix Albuquerque 2013 (THS standard) | starting rating: 1698 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 282 | Martin, Shawna (1449) | Won 2-0 | +141712 |
| 2standard | 208 | Holladay, Ross (1476) | Lost 0-2 | -221690 |
| 3standard | 396 | Ortiz, Lance (1481) | Won 2-1 | +141704 |
| 4standard | 321 | Sundholm, Peter (1503) | Won 2-0 | +141718 |
| 5standard | 201 | Bogner, Ryan (1756) | Lost 1-2 | -171701 |
| 6standard | 320 | Baca, David (1521) | Won 2-0 | +151716 |
| 7standard | 200 | Ogreenc, Greg (1790) | Won 2-1 | +191735 |
| 8standard | 159 | Ortiz, Adolfo (1562) | Lost 1-2 | -211714 |
| top | average opponent: 1567record: 5-3 | new rating: 1714 | ||
| Grand Prix Denver 2013 (legacy) | starting rating: 1684 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 13 | Marshall, Scott (1432) | Won 2-0 | +141698 |
| 2legacy | 86 | Chilbert, Colin (1826) | Lost 1-2 | -161682 |
| 3legacy | 160 | Perry, Kenny L (1486) | Lost 1-2 | -211661 |
| 4legacy | 291 | Niederauer, Scott (1481) | Won 2-0 | +141675 |
| 5legacy | 234 | Janke, Justin J (1504) | Won 2-1 | +151690 |
| 6legacy | 127 | Rogers, Joshua (1514) | Won 2-0 | +151705 |
| 7legacy | 145 | Meyer, Shawn (1554) | Lost 1-2 | -211684 |
| 8legacy | 144 | Pavlic, Matt (1456) | Won 2-0 | +141698 |
| top | average opponent: 1532record: 5-3 | new rating: 1698 | ||
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1675 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 71 | Slater, Tyler (1518) | Lost 1-2 | -201655 |
| 3sealed | 294 | Watson, James (1501) | Won 2-1 | +151670 |
| 4sealed | 270 | Cagle, Blue (1519) | Won 2-1 | +151685 |
| 5sealed | 250 | Adamson, Victor (1519) | Won 2-1 | +151700 |
| 6sealed | 155 | Kwok, Ellis (1558) | Won 2-1 | +161716 |
| 7sealed | 86 | Merchant, Sameer (1587) | Lost 0-2 | -211695 |
| 8sealed | 86 | Sears, Isaac (1674) | Won 2-0 | +181713 |
| 9sealed | 53 | Meredith, Graeme (1512) | Won 2-1 | +141727 |
| 10draft | 33 | Bemrose, Ryan (1520) | Lost 1-2 | -221705 |
| 11draft | 12 | Leeper, Ryan (1699) | Lost 0-2 | -181687 |
| 12draft | 64 | Hampton, Jesse (1924) | Lost 1-2 | -131674 |
| 13draft | 38 | Pickett, Alastair (1549) | Won 2-0 | +151689 |
| 14draft | 28 | Levy, Adam (1584) | Lost 1-2 | -201669 |
| 15draft | 63 | Andreatta, Anthony (1504) | Won 2-1 | +151684 |
| top | average opponent: 1583record: 8-6 | new rating: 1684 | ||
| Grand Prix Denver 2011 (MBS limited) | starting rating: 1690 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 455 | Warmenhoven, Ruud (1801) | Lost 0-2 | -161674 |
| 3sealed | 543 | Carter, Neil (1500) | Won 2-0 | +151689 |
| 4sealed | 463 | Williams, Seth (1446) | Lost 1-2 | -221667 |
| 5sealed | 537 | Chism, Aaron (1483) | Won 2-1 | +141681 |
| 6sealed | 468 | Kurtz, Chris R (1518) | Won 2-0 | +151696 |
| 7sealed | 444 | Schwartz, Stephen (1542) | Lost 0-2 | -211675 |
| top | average opponent: 1548record: 3-3 | new rating: 1675 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1701 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 415 | Hatab, Blaine (1484) | Won 2-0 | +141715 |
| 5sealed | 403 | Spears, Jimmy (1677) | Won 2-1 | +171732 |
| 6sealed | 413 | Szelzki, Jeffrey (1598) | Lost 1-2 | -201712 |
| 7sealed | 441 | Istfan, Raeef (1575) | Won 2-0 | +151727 |
| 8sealed | 423 | Buckingham, James (1785) | Lost 0-2 | -171710 |
| 9sealed | 446 | Knox, Joshua L (1588) | Lost 0-2 | -201690 |
| top | average opponent: 1618record: 3-3 | new rating: 1690 | ||
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1575 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 178 | Waite, Paul (1518) | Won 2-0 | +171592 |
| 3standard | 81 | Epperson, William (1518) | Won 2-1 | +161608 |
| 4standard | 88 | Gardiner, James (1536) | Won 2-0 | +171625 |
| 5standard | 23 | Turtenwald, Owen (1833) | Won 2-0 | +221647 |
| 6standard | 35 | Fox, Chris (1629) | Won 2-1 | +171664 |
| 7standard | 13 | Becvar, Nick (1704) | Won 2-0 | +191683 |
| 8standard | 6 | McKeown, Sean (1784) | Lost 0-2 | -161667 |
| 9standard | 21 | Chen, Lokman (1633) | Won 0-0 | +171684 |
| 10standard | 11 | Landale, Tim (1735) | Lost 1-2 | -171667 |
| 11standard | 17 | Bolanos, Grant A (1582) | Won 2-0 | +171684 |
| 12standard | 21 | Saito, Tomoharu (2139) | Lost 1-2 | -111673 |
| 13standard | 37 | Wienburg, Ben (1810) | Won 2-1 | +211694 |
| 14standard | 25 | Porojan, Raul (1882) | Lost 0-2 | -151679 |
| 15standard | 28 | Ruel, Antoine (1869) | Won 2-1 | +221701 |
| top | average opponent: 1727record: 10-4 | new rating: 1701 | ||
| Grand Prix Phoenix 2006 (CSP limited) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 122 | Austin, Alan (1464) | Lost 1-2 | -191502 |
| 2sealed | 117 | Hall, Ryan (1482) | Won 2-0 | +181520 |
| 3sealed | 100 | Monk, Ryan (1516) | Won 2-0 | +181538 |
| 4sealed | 78 | Krumick, Shannon (1632) | Lost 1-2 | -161522 |
| 5sealed | 132 | Froehlig, Timothy (1500) | Won 2-1 | +171539 |
| 6sealed | 96 | Cummings, Brandon (1518) | Won 2-1 | +181557 |
| 7sealed | 59 | Neal, Graham D (1557) | Won 2-0 | +181575 |
| 8sealed | 48 | Gutierrez, Eric (1565) | Draw 1-1 | 01575 |
| top | average opponent: 1529record: 5-2-1 | new rating: 1575 | ||
| Grand Prix Oakland 2004 (DST limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 115 | Ramsey, Alan (1500) | Draw 1-1 | 01501 |
| 2sealed | 103 | Creitz, Colin (1500) | Won 2-0 | +181519 |
| 3sealed | 70 | Welch, Colin (1518) | Won 2-1 | +181537 |
| 4sealed | 60 | Reeves, Neil (1789) | Won 2-0 | +231560 |
| 5sealed | 34 | Whitmont, Morgan (1436) | Lost 0-2 | -211539 |
| 6sealed | 67 | Langford, Anthony (1534) | Lost 0-2 | -181521 |
| top | average opponent: 1546record: 3-2-1 | new rating: 1521 | ||
| Grand Prix Anaheim 2003 (extended) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 69 | Smith, Rusty (1500) | Lost 0-2 | -181502 |
| 2extended | 76 | Matarese, Chris (1505) | Won 2-0 | +181520 |
| 3extended | 77 | Holden, Eric (1500) | Lost 1-2 | -181502 |
| 4extended | 118 | Yamamoto, Robby (1482) | Won 2-0 | +171519 |
| 5extended | 78 | Carter, Tom (1518) | Lost 0-2 | -181501 |
| top | average opponent: 1501record: 2-3 | new rating: 1501 | ||
| Grand Prix Los Angeles 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 91 | Ostroumov, Alexander (1522) | Won 2-0 | +181518 |
| 2sealed | 21 | Smith, Justin (1554) | Draw 1-1 | +11519 |
| 3sealed | 78 | Lysik, Bruce (1500) | Won 2-0 | +181537 |
| 4sealed | 67 | Weathersby, Cassius (1569) | Lost 1-2 | -181519 |
| 5sealed | 113 | Fenwick, Brian (1547) | Lost 1-2 | -171502 |
| 6sealed | 120 | Henman, Tim (1501) | Won 2-0 | +181520 |
| 7sealed | 91 | Jaffee, Seth (1557) | Won 2-0 | +181538 |
| 8sealed | 65 | Horowitz, Steve (1530) | Lost 0-2 | -181520 |
| top | average opponent: 1535record: 4-3-1 | new rating: 1520 | ||