King, Jeffrey
Current rating: 1561
Record: 29-26-2
| Grand Prix Baltimore 2014 (KTK limited) | starting rating: 1565 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 157 | Van, Jasper (1500) | Won 2-1 | +171582 |
| 2sealed | 96 | Guy, Timothy (1688) | Lost 0-2 | -161566 |
| 3sealed | 365 | Neill, Zachary (1505) | Won 2-1 | +171583 |
| 4sealed | 184 | Rogers, Nick (1457) | Won 2-1 | +151598 |
| 5sealed | 241 | Bowman, Jeremy (1648) | Lost 0-2 | -171581 |
| 6sealed | 199 | Waldrop, Philip (1435) | Lost 1-2 | -201561 |
| top | average opponent: 1539record: 3-3 | new rating: 1561 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 1454 | McIntyre, James (1438) | Won 2-0 | +171540 |
| 2legacy | 1478 | Jung, Leo (1488) | Lost 1-2 | -191521 |
| 3legacy | 1712 | Mitchell, Ben 2 (1500) | Won 2-1 | +171538 |
| 4legacy | 1806 | Potter, Rusty (1485) | Won 2-1 | +171555 |
| 5legacy | 1553 | Klein, Patrick (1486) | Won 2-0 | +171572 |
| 6legacy | 1535 | Vlcek, Tomas (1698) | Lost 0-2 | -161556 |
| 7legacy | 1545 | Stark, Ben S (2026) | Won 2-0 | +261582 |
| 8legacy | 1496 | Dobbin, Zach (1517) | Won 2-1 | +171599 |
| 9legacy | 1508 | Molina, Mario (1624) | Won 2-1 | +191618 |
| 10legacy | 90 | Wisniewski, Cameron (1591) | Lost 0-2 | -191599 |
| 11legacy | 203 | Ratajczak, Matthew (1662) | Lost 0-2 | -171582 |
| 12legacy | 204 | Scalco, Joseph (1611) | Lost 1-2 | -171565 |
| top | average opponent: 1594record: 7-5 | new rating: 1565 | ||
| Grand Prix Washington DC 2014 (JOU limited) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 118 | Troyano, Spencer (1500) | Won 2-0 | +181531 |
| 2sealed | 95 | Courcy, Daniel (1486) | Won 2-0 | +171548 |
| 3sealed | 77 | McGee, Michael (1759) | Lost 0-2 | -141534 |
| 4sealed | 219 | Ingram, Michael (1604) | Won 2-0 | +191553 |
| 5sealed | 116 | Hinkle, Charles (1941) | Lost 0-2 | -111542 |
| 6sealed | 213 | Ulsch, Tyler (1519) | Lost 1-2 | -191523 |
| top | average opponent: 1635record: 3-3 | new rating: 1523 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 541 | Looney, Patrick (1500) | Won 2-1 | +181506 |
| 2sealed | 11 | Cuttler, William (1485) | Lost 0-2 | -181488 |
| 3sealed | 430 | Garcia, Paul (1416) | Won 2-1 | +171505 |
| 4sealed | 446 | Benning, Mark (1486) | Won 2-1 | +171522 |
| 5sealed | 380 | Grimes, Dylan (1769) | Lost 0-2 | -131509 |
| 6sealed | 399 | Henriquez, Alexander (1535) | Won 2-1 | +181527 |
| 7sealed | 275 | Warner, Adam (1738) | Lost 1-2 | -141513 |
| top | average opponent: 1561record: 4-3 | new rating: 1513 | ||
| Grand Prix Atlanta 2012 (legacy) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 162 | Matheny, Brandon (1500) | Won 2-0 | +181545 |
| 2legacy | 31 | Rogers, Jason (1486) | Won 2-0 | +171562 |
| 3legacy | 33 | Henricks, J.T. (1649) | Lost 1-2 | -171545 |
| 4legacy | 203 | Goanos, Steven (1453) | Lost 1-2 | -191526 |
| 5legacy | 319 | Howell, Michael (1514) | Draw 1-1 | 01526 |
| 6legacy | 306 | Sugg, Jennifer (1499) | Lost 0-2 | -191507 |
| 7legacy | 315 | Capalongan, Ronald (1516) | Lost 0-2 | -181489 |
| 8legacy | 285 | Peel, Eric (1477) | Won 2-1 | +181507 |
| 9legacy | 246 | Darran, Jeff (1455) | Lost 0-2 | -191488 |
| top | average opponent: 1505record: 3-5-1 | new rating: 1488 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 542 | Pagan, Edgar R (1500) | Won 2-0 | +171571 |
| 2extended | 523 | Yi, James G (1518) | Lost 1-2 | -191552 |
| 3extended | 567 | Russell, Ronnie (1506) | Lost 0-2 | -191533 |
| 4extended | 666 | Alexander, Zach (1482) | Lost 1-2 | -191514 |
| 5extended | 650 | Marino, James (1465) | Lost 0-2 | -191495 |
| 6extended | 620 | Hancock, Blake (1448) | Won 2-1 | +171512 |
| 7extended | 565 | Moore, Jarrett (1451) | Won 2-0 | +171529 |
| 8extended | 526 | Mitchell, David (1484) | Won 2-0 | +171546 |
| 9extended | 486 | Henry, Christopher (1490) | Lost 0-2 | -191527 |
| top | average opponent: 1483record: 4-5 | new rating: 1527 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 676 | Calhoun, Bruce (1564) | Draw 1-1 | +11501 |
| 2standard | 843 | Flinn, Bradley E (1448) | Won 2-0 | +171518 |
| 3standard | 751 | Miller, Blaine (1518) | Won 2-0 | +181536 |
| 4standard | 721 | Brennemen, Dylan (1536) | Lost 0-1 | -181518 |
| 5standard | 811 | Greenstein, Jordan (1555) | Won 2-1 | +191537 |
| 6standard | 735 | Church, Stephen (1536) | Won 2-1 | +181555 |
| 7standard | 683 | Buscaino, Anthony (1611) | Won 2-0 | +191574 |
| 8standard | 651 | Wilson, Anthony (1467) | Lost 0-2 | -201554 |
| top | average opponent: 1529record: 5-2-1 | new rating: 1554 | ||