Shafer, Clayton
Current rating: 1737 (#4451)
Record: 58-47-2
Grand Prix Kansas City 2008Grand Prix Houston 2010Grand Prix Washington DC 2010Grand Prix Nashville 2010Grand Prix Dallas-Fort Worth 2011Grand Prix Kansas City 2011Grand Prix Austin 2012Grand Prix Lincoln 2012Grand Prix Memphis 2015Grand Prix Las Vegas 2015 (2)Grand Prix Atlanta 2016Grand Prix Dallas-Fort Worth 2016Grand Prix Louisville 2017
| Grand Prix Louisville 2017 (legacy) | starting rating: 1764 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 484 | Rekow, Michael (1844) | Won 2-1 | +201784 |
| 4legacy | 466 | Hefner, Jessy (1693) | Lost 0-2 | -201764 |
| 5legacy | 522 | Loveman, Eli (1847) | Lost 0-2 | -161748 |
| 6legacy | 660 | Finney, James (1583) | Lost 1-2 | -211727 |
| 7legacy | 810 | Yambay, David (1617) | Won 2-1 | +161743 |
| 8legacy | 664 | Wu, Steven (1547) | Won 2-1 | +141757 |
| 9legacy | 544 | Torlone, Mark (1658) | Lost 1-2 | -201737 |
| top | average opponent: 1684record: 3-4 | new rating: 1737 | ||
| Grand Prix Dallas-Fort Worth 2016 (modern) | starting rating: 1682 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 137 | Lancaster, Charles (1702) | Won 2-1 | +191701 |
| 4modern | 22 | Armstrong, Timothy (1526) | Won 2-0 | +141715 |
| 5modern | 59 | Oliver, Neal (1943) | Lost 1-2 | -131702 |
| 6modern | 74 | Ingram, Michael (1596) | Won 2-0 | +161718 |
| 7modern | 140 | Hicks, Joe (1579) | Lost 1-2 | -211697 |
| 8modern | 217 | Creed, Benjamin (1493) | Won 2-0 | +141711 |
| 9modern | 92 | Killelea, Michael (1560) | Won 2-1 | +161727 |
| 10modern | 95 | Lamb, Jesse (1501) | Won 2-1 | +141741 |
| 11modern | 40 | Koenig, Jake (1733) | Lost 1-2 | -181723 |
| 12modern | 93 | Smith, Donald (1961) | Won 2-0 | +221745 |
| 13modern | 84 | Nelson, Brandon (1970) | Lost 1-2 | -141731 |
| 14modern | 65 | Collett, Chase (1590) | Won 2-1 | +151746 |
| 15modern | 75 | Rountree, Collin (1753) | Won 2-0 | +181764 |
| top | average opponent: 1685record: 9-4 | new rating: 1764 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1622 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 765 | Hwang, Eugene (2030) | Lost 1-2 | -111611 |
| 4sealed | 799 | LePine, Mark (1711) | Lost 1-2 | -161595 |
| 5sealed | 1100 | Bare, John (1499) | Won 2-0 | +161611 |
| 6sealed | 855 | Still, Taylor (1517) | Won 2-0 | +161627 |
| 7sealed | 775 | McGraw, Bryan (1664) | Won 2-1 | +191646 |
| 8sealed | 636 | Dial, Stephen (1521) | Won 2-0 | +161662 |
| 9sealed | 596 | Trowbridge, Branden (1708) | Won 2-0 | +191681 |
| 10draft | 885 | Cathro, Daniel (1899) | Lost 0-2 | -141667 |
| 11draft | 884 | Gould, Rayne (1560) | Won 2-1 | +161683 |
| 12draft | 881 | Smith, Jimmie (1604) | Lost 0-2 | -201663 |
| 13draft | 934 | Christopher, Grant (1683) | Won 2-1 | +191682 |
| 14draft | 832 | Selivorstov, Nikita (1790) | Lost 0-2 | -161666 |
| 15draft | 866 | Casullo, Daniel (1594) | Won 2-0 | +161682 |
| top | average opponent: 1675record: 8-5 | new rating: 1682 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1591 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 357 | O'Brien, Andrew (1512) | Won 2-1 | +171608 |
| 2sealed | 34 | Ayers, Daniel (1519) | Won 2-0 | +161624 |
| 3sealed | 135 | Akiyama, Justin (1657) | Won 2-1 | +191643 |
| 4sealed | 75 | Jacobsmeyer, Jimmy (1559) | Won 2-1 | +161659 |
| 5sealed | 20 | Shade, Richard (1555) | Lost 1-2 | -201639 |
| 6sealed | 34 | Klein, Daniel (1574) | Lost 0-2 | -191620 |
| 7sealed | 107 | Bleich, Brent (1536) | Won 2-0 | +171637 |
| 8sealed | 112 | Weeden, Eric (1829) | Lost 0-2 | -151622 |
| top | average opponent: 1593record: 5-3 | new rating: 1622 | ||
| Grand Prix Memphis 2015 (FRF standard) | starting rating: 1606 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 37 | Dinsmore, James (1500) | Won 2-0 | +161622 |
| 2standard | 147 | Wightman, Ian (1518) | Won 2-1 | +161638 |
| 3standard | 136 | Passarelli, Hayden (1537) | Won 2-1 | +161654 |
| 4standard | 109 | Fuentes, Joaquin (1603) | Lost 1-2 | -191635 |
| 5standard | 140 | Schultz, Christopher (1442) | Lost 0-2 | -211614 |
| 6standard | 160 | Kaiser, Taylor (1536) | Lost 1-2 | -201594 |
| 7standard | 231 | Hazlip, Jason (1465) | Won 2-1 | +161610 |
| 8standard | 176 | Gosser, Alex (1568) | Lost 0-2 | -191591 |
| top | average opponent: 1521record: 4-4 | new rating: 1591 | ||
| Grand Prix Lincoln 2012 (modern) | starting rating: 1617 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 61 | Spomer, Steve (1500) | Won 2-0 | +161633 |
| 3modern | 15 | Johnson, Daniel L (1517) | Lost 0-2 | -201613 |
| 4modern | 224 | Gordon, Todd (1485) | Won 2-1 | +161629 |
| 5modern | 124 | Embry, Colby D (1517) | Won 2-0 | +161645 |
| 6modern | 63 | Behl, Morgan (1553) | Won 2-0 | +161661 |
| 7modern | 55 | Lalo, Josh (1637) | Lost 0-2 | -181643 |
| 8modern | 90 | Martell, Eric (1503) | Lost 0-2 | -211622 |
| 9modern | 90 | Mayer, Kevin (1716) | Lost 0-2 | -161606 |
| top | average opponent: 1553record: 4-4 | new rating: 1606 | ||
| Grand Prix Austin 2012 (ISD limited) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 68 | Salinas, Merced D (1592) | Lost 1-2 | -161497 |
| 5sealed | 123 | Vazquez, Juan (1504) | Won 2-0 | +181515 |
| 6sealed | 148 | Kim, Da-Me (1497) | Won 2-0 | +171532 |
| 7sealed | 44 | Froehlich, Eric (1974) | Won 2-1 | +261558 |
| 8sealed | 21 | Ford, Jason (1687) | Lost 1-2 | -161542 |
| 9sealed | 41 | Hu, Haibing (1832) | Won 2-1 | +231565 |
| 10draft | 7 | Dao, Phu (1685) | Lost 1-2 | -151550 |
| 11draft | 63 | Boccio, Matthew (1840) | Lost 0-2 | -131537 |
| 12draft | 60 | VanMeter, Chris (1669) | Won 2-0 | +201557 |
| 13draft | 28 | Bush, Eric (1640) | Won 2-0 | +201577 |
| 14draft | 41 | White, Aaron (1805) | Won 2-1 | +221599 |
| 15draft | 28 | Steele, Derrick (1626) | Won 2-1 | +181617 |
| top | average opponent: 1696record: 8-4 | new rating: 1617 | ||
| Grand Prix Kansas City 2011 (NPH limited) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 108 | Crow, Daniel (1500) | Won 2-0 | +191462 |
| 2sealed | 82 | Idoni, Benjamin (1500) | Lost 0-2 | -181444 |
| 3sealed | 260 | Glass, Jason (1500) | Won 2-1 | +191463 |
| 4sealed | 223 | Jennings, Cody (1451) | Won 2-0 | +181481 |
| 5sealed | 155 | Daniel, Bobby (1538) | Won 2-0 | +191500 |
| 6sealed | 93 | Mechtensimer, Aaron (1660) | Won 2-0 | +211521 |
| 7sealed | 26 | Schuler, Jeff (1573) | Lost 1-2 | -171504 |
| 8sealed | 106 | Huang, Jason (1708) | Lost 1-2 | -141490 |
| 9sealed | 146 | Wescoe, Craig (1790) | Won 2-1 | +231513 |
| top | average opponent: 1580record: 6-3 | new rating: 1513 | ||
| Grand Prix Dallas-Fort Worth 2011 (MBS standard) | starting rating: 1408 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 161 | Culala, William (1518) | Won 2-0 | +201428 |
| 3standard | 30 | Abrams, Matt (1660) | Lost 1-2 | -141414 |
| 4standard | 230 | Kuo, Yu-Liang (1517) | Lost 0-2 | -161398 |
| 5standard | 416 | Pearce, Drew (1500) | Won 2-0 | +201418 |
| 6standard | 238 | Garnett, Derek (1520) | Won 2-0 | +201438 |
| 7standard | 184 | Kaplan, Louis (1675) | Won 2-1 | +221460 |
| 8standard | 145 | Randell, Tye (1505) | Lost 0-2 | -171443 |
| top | average opponent: 1556record: 4-3 | new rating: 1443 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 41 | Dziuba, Joseph (1500) | Won 2-1 | +191455 |
| 3sealed | 10 | Bulger, Tim (1605) | Lost 0-2 | -151440 |
| 4sealed | 216 | Berni, Roberto (1583) | Lost 1-2 | -151425 |
| 5sealed | 234 | Maxwell, Earnest (1498) | Lost 0-2 | -171408 |
| top | average opponent: 1546record: 1-3 | new rating: 1408 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 106 | Elliott, Ryan (1500) | Lost 1-2 | -181452 |
| 2standard | 338 | Freeman, Asher (1560) | Lost 0-2 | -161436 |
| 3standard | 384 | Shchetinkin, Nickolay (1399) | Won 2-0 | +181454 |
| 4standard | 339 | Karatheodoris, John (1481) | Lost 0-2 | -181436 |
| top | average opponent: 1485record: 1-3 | new rating: 1436 | ||
| Grand Prix Houston 2010 (extended) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 67 | Stephens, Tim (1555) | Won 2-0 | +191501 |
| 5extended | 12 | Dumanski, Drew (1502) | Lost 0-2 | -181483 |
| 6extended | 27 | Raflowitz, Taylor (1600) | Draw 1-1 | +21485 |
| 7extended | 55 | Nadurath, Tahir A (1556) | Lost 0-2 | -171468 |
| 8extended | 95 | Eccleston, Javier (1550) | Draw 1-1 | +21470 |
| top | average opponent: 1553record: 1-2-2 | new rating: 1470 | ||
| Grand Prix Kansas City 2008 (ALA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 49 | Laake, Michael (1439) | Won 2-1 | +171517 |
| 2sealed | 27 | Plurkowski, Luke (1561) | Lost 1-2 | -171500 |
| 3sealed | 191 | Hahl, Alex (1499) | Lost 0-2 | -181482 |
| 4sealed | 252 | Waldeck, Greg (1454) | Won 2-0 | +171499 |
| 5sealed | 216 | Davis, Andrew g (1498) | Won 2-1 | +181517 |
| 6sealed | 146 | Lohman, Martin D (1543) | Won 2-0 | +191536 |
| 7sealed | 86 | Zimmerman, William (1541) | Lost 0-2 | -181518 |
| 8sealed | 115 | Ellis, Andrew B (1518) | Lost 0-2 | -181500 |
| 9sealed | 98 | White, Aaron (1491) | Lost 0-2 | -181482 |
| top | average opponent: 1505record: 4-5 | new rating: 1482 | ||