Pfeiffer, James
Current rating: 1733 (#4645)
Record: 45-25-1
| Grand Prix Seattle 2019 (MH1 limited) | starting rating: 1780 | |||
| round | table | opponent (rating) | result | Δrating |
| A1sealed | 468 | Asztalos, Vivian (1500) | Lost 0-2 | -231757 |
| A2sealed | 570 | Lee, Jeremiah (1650) | Won 2-1 | +161773 |
| A3sealed | 327 | Knickerbocker, Travis (1498) | Lost 0-2 | -231750 |
| B1sealed | 624 | Stone, Sara (1503) | Won 2-0 | +141764 |
| B2sealed | 462 | Winata, Andrew (1573) | Won 2-1 | +141778 |
| B3sealed | 166 | Espenan, Jonathan (1615) | Won 2-0 | +161794 |
| B4sealed | 118 | Wong, Benny (1763) | Lost 1-2 | -191775 |
| B5sealed | 88 | Hagedorn, Alex (1546) | Lost 1-2 | -221753 |
| B6sealed | 207 | Solana-Walkinshaw, Noble (1663) | Lost 1-2 | -201733 |
| top | average opponent: 1590record: 4-5 | new rating: 1733 | ||
| Grand Prix New Jersey 2019 (RNA limited) | starting rating: 1825 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 394 | Chapman, Ian (1402) | Won 2-0 | +101835 |
| 2sealed | 160 | Conklin, Thomas (1513) | Won 2-0 | +131848 |
| 3sealed | 224 | Kirkwood, Connor (1529) | Lost 0-2 | -241824 |
| 4sealed | 412 | Sacks, Neal (1715) | Lost 1-2 | -201804 |
| 5sealed | 503 | Blount, Morgan (1472) | Lost 1-2 | -241780 |
| top | average opponent: 1526record: 2-3 | new rating: 1780 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1794 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 175 | Whaley, Christopher (1425) | Lost 0-2 | -251769 |
| 2standard | 556 | Miro, Bradley (1461) | Won 2-0 | +131782 |
| 3standard | 560 | Holbrook, Paul (1456) | Won 2-1 | +121794 |
| 4standard | 374 | Zulinski, Seth (1484) | Won 2-0 | +131807 |
| 5standard | 182 | Vorel, Andrew (1800) | Won 2-1 | +181825 |
| 6standard | 185 | DeNove, Matthew (1640) | Won 2-1 | +141839 |
| 7standard | 98 | Woolard, Horace (1593) | Won 2-1 | +141853 |
| 8standard | 83 | Portes, Fabio (1568) | Won 2-1 | +131866 |
| 9standard | 42 | Stark, Ben S (2067) | Lost 1-2 | -141852 |
| 10standard | 88 | Grap, Bartholomew (1575) | Lost 1-2 | -231829 |
| 11standard | 150 | Feria, Brian (1564) | Lost 1-2 | -231806 |
| 12standard | 148 | Loysen, Lucas (1548) | Won 2-0 | +131819 |
| 13standard | 120 | Dunn, Ryan (1651) | Won 2-1 | +151834 |
| 14standard | 68 | Catalano, Jeffrey (1480) | Lost 1-2 | -241810 |
| 15standard | 121 | Murchison, Adrian (1619) | Won 2-1 | +151825 |
| top | average opponent: 1595record: 10-5 | new rating: 1825 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1690 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 684 | Bayer-Braswell, Ian (1500) | Won 2-1 | +141704 |
| 2sealed | 525 | Grana, Gregory (1436) | Won 2-0 | +131717 |
| 3sealed | 863 | Christopher, Grant (1650) | Lost 0-2 | -191698 |
| 4sealed | 843 | Darby, William (1518) | Won 2-0 | +151713 |
| 5sealed | 643 | Strickland, William (1538) | Won 2-0 | +151728 |
| 6sealed | 701 | Reilly, Michael (1656) | Won 2-1 | +171745 |
| 7sealed | 602 | Pisano, Rob (2054) | Won 2-1 | +231768 |
| 8sealed | 540 | Feria, Brian (1571) | Won 2-0 | +141782 |
| 9sealed | 560 | Smith, Jason (1817) | Lost 0-2 | -171765 |
| 10draft | 1005 | Runyon, John (1785) | Won 2-1 | +181783 |
| 11draft | 962 | Johnson, Cody S (1704) | Lost 1-2 | -191764 |
| 12draft | 1012 | Oravec, Daniel (1527) | Lost 0-2 | -221742 |
| 13draft | 989 | Zaccagnino, Timothy (1621) | Won 2-1 | +161758 |
| 14draft | 932 | Silberman, Philip (1892) | Won 2-1 | +201778 |
| 15draft | 891 | Wells, Joshua (1663) | Won 2-0 | +161794 |
| top | average opponent: 1662record: 11-4 | new rating: 1794 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1654 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 164 | Antonovich, Darren (1525) | Won 2-1 | +161670 |
| 2standard | 368 | Whitney, Cooper (1555) | Won 2-0 | +161686 |
| 3standard | 247 | Summerlin, Aubrey (1465) | Lost 1-2 | -221664 |
| 4standard | 321 | Schlom, Rob (1439) | Lost 1-2 | -221642 |
| 5standard | 581 | Custer, Nicolas (1574) | Won 2-1 | +161658 |
| 6standard | 439 | Wright, Christopher (1574) | Won 2-1 | +171675 |
| 7standard | 290 | Laurel, Matthew (1458) | Won 2-1 | +141689 |
| 8standard | 191 | Sears, Isaac (1749) | Lost 0-2 | -171672 |
| 9standard | 277 | Lew, Michael (1649) | Won 0-0 | +181690 |
| top | average opponent: 1554record: 6-3 | new rating: 1690 | ||
| Grand Prix Albuquerque 2016 (SOI limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 98 | Astorga, Efrain (1426) | Won 2-0 | +171516 |
| 2sealed | 257 | Jenkins, Mark (1274) | Won 2-0 | +131529 |
| 3sealed | 5 | Horner, Brian (1588) | Lost 0-2 | -171512 |
| 4sealed | 382 | Anderson, Neil (1976) | Won 2-0 | +261538 |
| 5sealed | 216 | Prost, Andrejs (1977) | Won 2-0 | +261564 |
| 6sealed | 48 | Aiken, Simone (1696) | Won 2-1 | +201584 |
| 7sealed | 34 | Sundholm, Peter (1665) | Won 2-0 | +201604 |
| 8sealed | 37 | Hertz, Michael (1542) | Lost 1-2 | -191585 |
| 9sealed | 91 | Posey, Kendall (1570) | Won 2-0 | +171602 |
| 10draft | 52 | Remley, Brandon (1780) | Lost 0-2 | -141588 |
| 11draft | 119 | Maxwell, Brad (1664) | Won 2-0 | +191607 |
| 12draft | 115 | Chan, Jason (1574) | Won 2-1 | +171624 |
| 13draft | 143 | Fennell, Christopher (1904) | Won 2-1 | +231647 |
| 14draft | 72 | Tan, Richard (1828) | Lost 1-2 | -141633 |
| 15draft | 9 | LePine, Mark (1828) | Won 2-1 | +211654 |
| top | average opponent: 1686record: 11-4 | new rating: 1654 | ||
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 112 | Wright, Erica (1500) | Won 2-1 | +181518 |
| 2sealed | 167 | ARMENTROUT, RYAN (1518) | Draw 1-1 | 01518 |
| 3sealed | 202 | Vitro, Teddy (1465) | Lost 1-2 | -191499 |
| top | average opponent: 1494record: 1-1-1 | new rating: 1499 | ||