Blackwelder, Nolan
Current rating: 1659
Record: 48-32-2
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1693 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 356 | Boada, Daniel (1500) | Lost 0-2 | -221671 |
| 2modern | 382 | Caffrey, Corey (1466) | Won 2-0 | +151686 |
| 3modern | 257 | Jang, Charles (1535) | Lost 1-2 | -211665 |
| 4modern | 425 | Lynch, Matthew (1470) | Won 2-0 | +141679 |
| 5modern | 215 | Sweeney, Colin (1548) | Lost 1-2 | -201659 |
| top | average opponent: 1504record: 2-3 | new rating: 1659 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1693 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 732 | Lancaster, Chris (1536) | Lost 1-2 | -211672 |
| 2sealed | 672 | Hodges, Trent (1535) | Won 2-0 | +151687 |
| 3sealed | 733 | Gedzelman, Evan (1500) | Won 2-0 | +151702 |
| 4sealed | 275 | Long, Mike (1276) | Won 2-1 | +111713 |
| 5sealed | 165 | Chatham, Charles (1608) | Lost 0-2 | -201693 |
| top | average opponent: 1491record: 3-2 | new rating: 1693 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1689 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 542 | Nieborg, Katrina (1500) | Won 2-1 | +151704 |
| 2sealed | 610 | Evanko, Thomas (1525) | Lost 1-2 | -211683 |
| 3sealed | 382 | Martinez, Nicholas (1502) | Won 2-0 | +141697 |
| 4sealed | 174 | Dwyer, Hillary (1595) | Won 0-0 | +171714 |
| 5sealed | 184 | Kostas, Steven (1560) | Lost 0-2 | -211693 |
| top | average opponent: 1537record: 3-2 | new rating: 1693 | ||
| Grand Prix Orlando 2012 (ISD standard) | starting rating: 1682 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 33 | Aragon, Edwin J (1451) | Won 2-0 | +141696 |
| 3standard | 15 | Marmulstein, Rion (1597) | Won 2-0 | +161712 |
| 4standard | 46 | Bonfardin, Stephen (1518) | Won 2-1 | +151727 |
| 5standard | 39 | Marquez, Adrian (1654) | Won 2-1 | +171744 |
| 6standard | 4 | Nakamura, Shuhei (2071) | Lost 0-2 | -131731 |
| 7standard | 56 | Wisniewski, Kristofer (1581) | Lost 1-2 | -201711 |
| 8standard | 74 | Sesit, Brad (1524) | Lost 0-2 | -221689 |
| top | average opponent: 1628record: 4-3 | new rating: 1689 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1605 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 121 | Battle, Daniel L (1500) | Lost 0-2 | -191586 |
| 3extended | 101 | Ohlson, Leighton (1500) | Won 2-0 | +161602 |
| 4extended | 167 | Fitchko, William (1525) | Won 2-1 | +171619 |
| 5extended | 132 | Cole, Thomas R (1534) | Won 2-0 | +161635 |
| 6extended | 48 | Edwards, Kenneth R (1615) | Won 2-0 | +181653 |
| 7extended | 15 | Meng, Eric (1615) | Draw 1-1 | -11652 |
| 8extended | 38 | Winterhalter, Benjamin (1636) | Won 2-0 | +181670 |
| 9extended | 20 | Yarbrough, Christopher (1574) | Won 2-0 | +161686 |
| 10extended | 26 | Eason, Brian (1644) | Won 2-0 | +171703 |
| 11extended | 15 | Bishop, James T (1562) | Won 2-0 | +161719 |
| 12extended | 8 | Miggels, Stephen (1647) | Lost 0-2 | -201699 |
| 13extended | 20 | Howe, Joshua (1701) | Lost 0-2 | -181681 |
| 14extended | 37 | Jackson, Allen (1808) | Won 2-1 | +211702 |
| 15extended | 24 | Lanthier, Dan (1631) | Lost 0-2 | -201682 |
| top | average opponent: 1607record: 9-4-1 | new rating: 1682 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1631 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 124 | Mickelson, Sheridan (1500) | Lost 1-2 | -201611 |
| 2sealed | 246 | Ochoa, Raul (1482) | Won 2-1 | +151626 |
| 3sealed | 218 | Hibbs, David (1468) | Lost 0-2 | -211605 |
| top | average opponent: 1483record: 1-2 | new rating: 1605 | ||
| Grand Prix Indianapolis 2008 (SHM limited) | starting rating: 1641 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 232 | Weidner, Kyle (1500) | Won 2-0 | +151656 |
| 2sealed | 125 | Coleman, Joshua n (1518) | Won 2-0 | +161672 |
| 3sealed | 104 | Dailey, Ryan (1538) | Lost 1-2 | -211651 |
| 4sealed | 257 | Finley, Brian (1517) | Lost 0-2 | -201631 |
| top | average opponent: 1518record: 2-2 | new rating: 1631 | ||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1619 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 187 | Hildenbrand, James (1500) | Won 2-0 | +161635 |
| 2extended | 17 | Gardler, Harrison J (1518) | Won 2-0 | +151650 |
| 3extended | 96 | Valluzzi, Jason A (1536) | Won 2-1 | +161666 |
| 4extended | 79 | Skarvelis, Theo (1555) | Won 2-1 | +161682 |
| 5extended | 35 | Gluck, Terrence (1536) | Won 2-0 | +161698 |
| 6extended | 26 | Burnett, Kai (1556) | Lost 1-2 | -211677 |
| 7extended | 53 | Moore, John E (1709) | Lost 1-2 | -171660 |
| 8extended | 135 | Kolos, John (1619) | Lost 0-2 | -191641 |
| top | average opponent: 1566record: 5-3 | new rating: 1641 | ||
| Grand Prix Columbus 2007 (legacy) | starting rating: 1612 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 96 | Rutter, Brandon (1548) | Won 2-0 | +171629 |
| 2legacy | 88 | Rice, David B (1478) | Won 2-0 | +151644 |
| 3legacy | 36 | Baker, Clayton (1536) | Lost 1-2 | -201624 |
| 4legacy | 222 | Baker, Luke (1516) | Won 2-0 | +161640 |
| 5legacy | 138 | Huang, Don (1645) | Lost 1-2 | -171623 |
| 6legacy | 199 | Parnes, Stuart (1518) | Won 2-0 | +161639 |
| 7legacy | 82 | Sause, Steve (1535) | Lost 1-2 | -201619 |
| top | average opponent: 1539record: 4-3 | new rating: 1619 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1635 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 161 | Seaberry, John (1518) | Lost 1-2 | -201615 |
| 3extended | 170 | Foster, Tucker (1500) | Won 0-0 | +161631 |
| 4extended | 208 | Fox, Adam M (1584) | Lost 0-2 | -191612 |
| top | average opponent: 1534record: 1-2 | new rating: 1612 | ||
| Grand Prix Orlando 2004 (Mirrodin block) | starting rating: 1550 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 148 | Bruno, Dan (1500) | Won 2-0 | +171567 |
| 2block | 36 | Bahnaman, Stephen (1518) | Won 2-0 | +171584 |
| 3block | 67 | Fish, Darryll (1638) | Draw 1-1 | +11585 |
| 4block | 68 | Lugo, Jose (1485) | Won 2-0 | +171602 |
| 5block | 34 | Cunningham, Eric (1713) | Won 2-1 | +201622 |
| 6block | 16 | Bryant, Joseph (1591) | Won 2-1 | +171639 |
| 7block | 8 | Amado, Micah (1556) | Lost 1-2 | -201619 |
| 8block | 26 | Casper, Mattie (1573) | Won 2-1 | +181637 |
| 9block | 17 | Durnan, Harry (1528) | Lost 0-2 | -201617 |
| 10block | 23 | Lawrence, Luke (1505) | Won 2-0 | +161633 |
| 11block | 18 | Impellizzieri, Anthony (1738) | Lost 0-2 | -161617 |
| 12block | 23 | Taylor, Eric (1644) | Lost 0-2 | -181599 |
| 13block | 25 | Lucy, J. Sawyer (1616) | Won 2-0 | +181617 |
| 14block | 20 | McLaughlin, Keith (1619) | Won 2-0 | +181635 |
| top | average opponent: 1587record: 9-4-1 | new rating: 1635 | ||
| Grand Prix Tampa Bay 2002 (TOR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 60 | Hersey, Daniel (1500) | Won 2-0 | +181518 |
| 2sealed | 39 | Brown, Tom (1518) | Won 2-0 | +181536 |
| 3sealed | 43 | Dunning, Laurie (1488) | Lost 0-2 | -191517 |
| 4sealed | 111 | Oliveira, Thiago (1539) | Won 2-0 | +191536 |
| 5sealed | 62 | Ryder, Jake (1485) | Lost 0-2 | -191517 |
| 6sealed | 89 | Nunn, Ryan (1416) | Won 2-1 | +161533 |
| 7sealed | 58 | Allen, John (1502) | Won 2-0 | +171550 |
| top | average opponent: 1493record: 5-2 | new rating: 1550 | ||