Hallahan, Kory
Current rating: 1805 (#2077)
Record: 37-18
| Grand Prix Portland 2018 (modern) | starting rating: 1842 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 404 | Carey, Raymond (1461) | Won 2-1 | +121854 |
| 3modern | 321 | Egorov, Arseniy (1788) | Lost 0-2 | -191835 |
| 4modern | 222 | Marling, Alan (1549) | Won 2-1 | +131848 |
| 5modern | 151 | Appleton, Evan (1537) | Won 2-0 | +121860 |
| 6modern | 143 | Pate, Shawn (1435) | Won 2-0 | +111871 |
| 7modern | 113 | Turchansky, Zak (1723) | Lost 0-2 | -211850 |
| 8modern | 194 | Ricci, Joseph (1792) | Won 2-1 | +171867 |
| 9modern | 146 | Yang, Xiao Yu (Roy) (1828) | Lost 1-2 | -191848 |
| 10modern | 118 | Henly, Neil (1686) | Won 2-0 | +151863 |
| 11modern | 95 | Stout, Andy (1855) | Lost 1-2 | -181845 |
| 12modern | 106 | Ho, Eugene (1774) | Lost 0-2 | -191826 |
| 13modern | 117 | Stilwell, Sean (1670) | Lost 1-2 | -211805 |
| top | average opponent: 1675record: 6-6 | new rating: 1805 | ||
| Grand Prix Seattle 2018 (standard) (RIX standard) | starting rating: 1722 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 548 | Berry, John (1518) | Lost 1-2 | -221700 |
| 3standard | 527 | Hammerschmidt, Nick (1499) | Lost 0-2 | -221678 |
| 4standard | 610 | Anderson, Joseph (1523) | Won 2-0 | +161694 |
| 5standard | 354 | Kotcher, Anthony (1508) | Won 2-0 | +141708 |
| 6standard | 222 | Dissanayake, David (1509) | Won 2-0 | +151723 |
| 7standard | 207 | Wilson, David (1479) | Won 2-0 | +131736 |
| 8standard | 169 | Engle, Woodrow (1733) | Won 2-1 | +181754 |
| 9standard | 1089 | Tryggestad, David (1436) | Won 2-1 | +131767 |
| 10standard | 1079 | Pordes, Casey (1819) | Won 2-1 | +191786 |
| 11standard | 1018 | Peters, Kyle (1777) | Won 2-1 | +171803 |
| 12standard | 1021 | Goodwin, Luke (1968) | Won 2-1 | +211824 |
| 13standard | 1011 | Forsyth, John (1967) | Lost 1-2 | -151809 |
| 14standard | 1031 | Harwood, Sam (1686) | Won 2-1 | +161825 |
| 15standard | 1024 | Pastorinni, Luckas (1812) | Won 2-1 | +171842 |
| top | average opponent: 1660record: 11-3 | new rating: 1842 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1611 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 246 | Danke, Harrison (1518) | Won 2-0 | +161627 |
| 3standard | 3 | Crackenberg, Peter (1428) | Won 2-0 | +151642 |
| 4standard | 4 | McKay, Sean (1500) | Won 2-0 | +151657 |
| 5standard | 46 | McCary, Sean (1593) | Won 2-1 | +171674 |
| 6standard | 2 | Ingram, Peter (1911) | Won 2-1 | +221696 |
| 7standard | 17 | Moore, Andrew (1621) | Won 2-0 | +171713 |
| 8standard | 8 | Frank, Matt (1517) | Lost 0-2 | -221691 |
| 9standard | 15 | Porchas, Justin (1557) | Lost 1-2 | -201671 |
| 10standard | 68 | Orrmons, Kale (1752) | Won 2-1 | +191690 |
| 11standard | 26 | Kudva, Vikram (1860) | Won 2-0 | +211711 |
| 12standard | 21 | Woo, Travis (2001) | Lost 0-2 | -121699 |
| 13standard | 51 | Hansen, Chris (1657) | Won 2-1 | +171716 |
| 14standard | 32 | Thibeau, Markus (1760) | Won 2-0 | +191735 |
| 15standard | 18 | Sager, Jeremy (2015) | Lost 1-2 | -131722 |
| top | average opponent: 1692record: 10-4 | new rating: 1722 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 153 | England, Sarah (1481) | Won 2-1 | +181518 |
| 2sealed | 428 | Ortiz, David (1570) | Won 2-1 | +191537 |
| 3sealed | 158 | Tibbetts, Jason (1570) | Won 2-0 | +181555 |
| 4sealed | 53 | Wilkowski, Aaron (1718) | Lost 0-2 | -151540 |
| 5sealed | 342 | Lee, Daniel (1467) | Won 2-0 | +171557 |
| 6sealed | 89 | Rhett, Brian (1537) | Won 2-1 | +171574 |
| 7sealed | 97 | Cunningham, Jackson (1882) | Won 2-0 | +241598 |
| 8sealed | 21 | Kiyonaga, Case (1593) | Lost 0-2 | -181580 |
| 9sealed | 93 | Bonham, Nicholas (1640) | Lost 1-2 | -171563 |
| 10draft | 150 | Logsdon, Jim (1707) | Won 2-1 | +211584 |
| 11draft | 97 | Rideout, Vincent (1696) | Lost 0-0 | -161568 |
| 12draft | 171 | Koenig, Jake (1723) | Won 2-1 | +201588 |
| 13draft | 184 | Oback, Adam (1676) | Won 2-1 | +201608 |
| 14draft | 154 | Nguyen, James (1783) | Won 2-1 | +211629 |
| 15draft | 25 | Hom, Jonathan (1623) | Lost 0-2 | -181611 |
| top | average opponent: 1644record: 10-5 | new rating: 1611 | ||