Cook, Jacob
Current rating: 1620
Record: 58-53-1 (GP) / 3-4 (professional)
Grand Prix Las Vegas 2015 (2)Grand Prix Oakland 2016Grand Prix San Jose 2017Grand Prix Portland 2017Grand Prix Seattle 2018 (standard)Grand Prix Sacramento 2018Grand Prix Los Angeles 2018Grand Prix Portland 2018Grand Prix Cleveland 2019Grand Prix Las Vegas 2019 (modern)Grand Prix Las Vegas 2019 (limited)Kaldheim ChampionshipRegional Championships Dallas 2023
| Regional Championships Dallas 2023 (pioneer) | starting rating: 1653 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 232 | Schassburger, Alec (1500) | Lost 0-2 | -201633 |
| 2pioneer | 429 | Telles, Michael (1521) | Won 2-1 | +161649 |
| 3pioneer | 162 | Cohen, Adam (1603) | Lost 1-2 | -191630 |
| 4pioneer | 352 | Dou, William (1543) | Won 2-0 | +161646 |
| 5pioneer | 205 | Yang, Bryan (1507) | Lost 0-2 | -201626 |
| 6pioneer | 431 | Berman, Paul (1580) | Lost 1-2 | -191607 |
| 7pioneer | 373 | Gross, Mitchell (1690) | Lost 1-2 | -171590 |
| 8pioneer | 310 | Taylor, Robert (1369) | Won 2-0 | +141604 |
| 9pioneer | 243 | Turkovich, James (1476) | Won 2-1 | +161620 |
| top | average opponent: 1532record: 4-5 | new rating: 1620 | ||
| Kaldheim Championship (MTGA mixed) | starting rating: 1668 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 80 | Timokhin, Dmitriy (1622) | Lost 1-2 | -191649 |
| 2standard | 92 | Grancha Marin, Beatriz (1484) | Won 2-0 | +151664 |
| 3standard | 66 | Cines, Adam (1645) | Lost 0-2 | -181646 |
| 4historic | 71 | Edel, Willy (1731) | Lost 1-2 | -171629 |
| 5historic | 86 | Pozzo, Sebastian (1941) | Won 2-0 | +241653 |
| 6historic | 69 | Matsuda, Yuki (1605) | Won 2-0 | +171670 |
| 7historic | 66 | Marts, Logan (1738) | Lost 0-2 | -171653 |
| top | average opponent: 1681record: 3-4 | new rating: 1653 | ||
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 7 | Farrell, Sam (1537) | Won 2-1 | +161616 |
| 4sealed | 56 | Rigatti, Jonathan (1701) | Won 2-1 | +201636 |
| 5sealed | 66 | Gerard, Brian (1611) | Lost 1-2 | -191617 |
| 6sealed | 129 | Austria, Alfred (1540) | Lost 1-2 | -191598 |
| 7sealed | 175 | Baron, Geoffrey (1540) | Won 2-1 | +171615 |
| 8sealed | 91 | Janssen, Scott (1602) | Won 2-1 | +181633 |
| 9sealed | 92 | Hibino, Yasutaka (1729) | Lost 0-2 | -161617 |
| 10draft | 2052 | Festini, Mark (1902) | Draw 1-1 | +51622 |
| 11draft | 2053 | Austria, Alfred (1539) | Won 2-0 | +161638 |
| 12draft | 2051 | Zhao, Michael [USA] (1463) | Won 2-0 | +151653 |
| 13draft | 2041 | Busch, Werner (1578) | Won 2-1 | +171670 |
| 14draft | 2092 | Hodges, Charlie (1636) | Lost 0-2 | -191651 |
| 15draft | 2094 | Geislinger, Dana (1606) | Won 2-1 | +171668 |
| top | average opponent: 1614record: 8-4-1 | new rating: 1668 | ||
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 238 | Kozak, Erich (1470) | Lost 1-2 | -211577 |
| 4modern | 270 | Hosler, Levi (1540) | Won 2-0 | +181595 |
| 5modern | 163 | Asbach, John (1799) | Lost 0-2 | -151580 |
| 6modern | 251 | Donato, Marino (1744) | Won 2-0 | +211601 |
| 7modern | 366 | Bhayana, Milan (1467) | Lost 0-2 | -201581 |
| 8modern | 326 | Mancilla, Antonio (1617) | Won 2-0 | +191600 |
| top | average opponent: 1606record: 3-3 | new rating: 1600 | ||
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1560 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 234 | Beinlich, Connor (1475) | Won 2-1 | +171577 |
| 2sealed | 70 | Stanton, Ryan (1518) | Lost 1-2 | -191558 |
| 3sealed | 426 | Bertel, Erik (1505) | Won 2-0 | +171575 |
| 4sealed | 241 | Beniamino, David (1620) | Won 2-1 | +181593 |
| 5sealed | 158 | Brundage, Alexander (1517) | Lost 1-2 | -191574 |
| 6sealed | 346 | Hallock, Jeremy (1469) | Won 2-0 | +161590 |
| 7sealed | 143 | Yu, Jarvis (1852) | Won 2-1 | +231613 |
| 8sealed | 88 | Flannagan, Jaxon (1767) | Lost 1-2 | -151598 |
| top | average opponent: 1591record: 5-3 | new rating: 1598 | ||
| Grand Prix Portland 2018 (modern) | starting rating: 1595 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 245 | Grandjambe, Travis (1640) | Lost 0-2 | -181577 |
| 4modern | 459 | Woodson, Wyatt (1506) | Won 2-0 | +171594 |
| 5modern | 227 | Bosecker, James (1491) | Lost 0-2 | -201574 |
| 6modern | 245 | Weller-Gordon, Brian (1814) | Lost 1-2 | -131561 |
| 7modern | 400 | Nordgren, Bjorn (1499) | Won 2-1 | +161577 |
| 8modern | 326 | Bishop, Kevin (1616) | Lost 1-2 | -171560 |
| top | average opponent: 1594record: 2-4 | new rating: 1560 | ||
| Grand Prix Los Angeles 2018 (M19 standard) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 96 | Jen, Ivan (1699) | Lost 1-2 | -161584 |
| 4standard | 166 | Clark, Jeffrey (1761) | Won 2-0 | +211605 |
| 5standard | 165 | Bailyn, Noah (1557) | Lost 1-2 | -191586 |
| 6standard | 174 | Hamernick Jr, Burt (1602) | Won 2-1 | +181604 |
| 7standard | 108 | Weinreich, Brian (1579) | Won 2-1 | +181622 |
| 8standard | 121 | Feeman, Dylan (1778) | Won 2-1 | +211643 |
| 9standard | 71 | Sheftel, Alex (1703) | Lost 0-2 | -171626 |
| 10standard | 100 | Landey, Lee (1618) | Lost 1-2 | -181608 |
| 11standard | 90 | Oakes, Connor (1718) | Lost 0-2 | -161592 |
| 12standard | 100 | Chang, Kyle (1557) | Won 2-0 | +171609 |
| 13standard | 82 | Martell, Tom (1814) | Lost 0-2 | -141595 |
| top | average opponent: 1671record: 5-6 | new rating: 1595 | ||
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 184 | Doberne, David (1785) | Lost 0-2 | -151581 |
| 4sealed | 155 | Evans, Brandon (1547) | Lost 0-2 | -181563 |
| 5sealed | 337 | Dasti, Ian (1583) | Lost 0-2 | -181545 |
| 6sealed | 379 | Ruport, Gavin (1466) | Won 2-0 | +171562 |
| 7sealed | 318 | Di Cesare, Marco (1578) | Won 2-1 | +181580 |
| 8sealed | 243 | Walters, Noah (1692) | Won 2-0 | +201600 |
| top | average opponent: 1609record: 3-3 | new rating: 1600 | ||
| Grand Prix Seattle 2018 (standard) (RIX standard) | starting rating: 1623 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 321 | Marmulstein, Rion (1752) | Lost 1-2 | -161607 |
| 3standard | 360 | Gagliardi, Joe (1634) | Lost 1-2 | -181589 |
| 4standard | 567 | Koch, Alexander (1414) | Lost 1-2 | -211568 |
| 5standard | 592 | Low, Arthur (1408) | Won 2-1 | +151583 |
| 6standard | 435 | Smith, RJ (1417) | Won 2-0 | +151598 |
| 7standard | 383 | Kurd-Misto, Mohammed (1461) | Won 2-0 | +161614 |
| 8standard | 264 | Kaukoranta, Ville (1615) | Lost 1-2 | -181596 |
| top | average opponent: 1529record: 3-4 | new rating: 1596 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1509 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 104 | Diamant, Daniel (1647) | Lost 1-2 | -151494 |
| 2standard | 524 | Davis, Cameron (1522) | Won 2-0 | +181512 |
| 3standard | 522 | Pugh, Chase (1500) | Won 2-1 | +181530 |
| 4standard | 211 | Robertson, Zachery (1523) | Won 2-1 | +181548 |
| 5standard | 251 | Gross, Mitchell (1791) | Lost 1-2 | -141534 |
| 6standard | 242 | Prusa, Adam (1681) | Won 2-1 | +211555 |
| 7standard | 244 | Crowder, Daniel (1583) | Won 2-1 | +181573 |
| 8standard | 177 | Schroeder, Brian (1553) | Won 2-1 | +181591 |
| 9standard | 92 | Stern, Jon (1915) | Lost 0-2 | -121579 |
| 10standard | 129 | Nichols, Markus (1542) | Won 2-0 | +171596 |
| 11standard | 95 | Kim, Jeremy (1945) | Lost 0-2 | -121584 |
| 12standard | 160 | Estrada, Russell (1463) | Lost 0-2 | -201564 |
| 13standard | 157 | Lee, Alan (1775) | Won 2-1 | +221586 |
| 14standard | 133 | Domondon, Philip (1622) | Won 2-0 | +181604 |
| 15standard | 103 | Moreno, Eduardo (1609) | Won 2-0 | +191623 |
| top | average opponent: 1645record: 10-5 | new rating: 1623 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 303 | Vargas, Andrew (1786) | Won 2-1 | +231508 |
| 2sealed | 293 | Swen, Hawnlay (1506) | Lost 1-2 | -181490 |
| 3sealed | 683 | Stockton, Robert (1499) | Won 2-0 | +181508 |
| 4sealed | 317 | Storr, Nicholas (1518) | Won 2-0 | +181526 |
| 5sealed | 149 | Wang, John (1538) | Lost 1-2 | -171509 |
| 6sealed | 258 | Nicol, Jason (1525) | Lost 0-2 | -181491 |
| 7sealed | 513 | Rodriguez, Michael (1514) | Won 2-0 | +181509 |
| 8sealed | 328 | Pearson, Ritch (1521) | Lost 1-2 | -171492 |
| 9sealed | 393 | Miranda, Paul (1473) | Won 2-0 | +171509 |
| top | average opponent: 1542record: 5-4 | new rating: 1509 | ||
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 228 | Dorsey, Nathan (1452) | Won 2-0 | +181496 |
| 2standard | 136 | Mercado, Guillermo (1660) | Lost 1-2 | -151481 |
| 3standard | 467 | Olivieri, Daniel (1501) | Won 2-0 | +181499 |
| 4standard | 372 | Macaraeg, Tad (1753) | Won 2-1 | +231522 |
| 5standard | 198 | Benedetti, Michael (1480) | Won 2-0 | +171539 |
| 6standard | 140 | Gottstein, Jeff (1696) | Won 2-1 | +211560 |
| 7standard | 67 | Robins, Cyrus (1696) | Lost 1-2 | -161544 |
| 8standard | 149 | Jimenez, Nikki (1588) | Lost 0-2 | -171527 |
| 9standard | 332 | Ogreenc, Greg (1727) | Won 2-1 | +221549 |
| 10standard | 253 | Syed, Zan (1890) | Lost 0-2 | -121537 |
| 11standard | 232 | Liu, Bruce (1521) | Lost 0-2 | -191518 |
| 12standard | 229 | Ma, Yousi (1606) | Lost 1-2 | -161502 |
| 13standard | 209 | Razo, Miguel (1514) | Lost 1-2 | -181484 |
| 14standard | 193 | Shore, Jared (1496) | Won 2-0 | +181502 |
| 15standard | 173 | Moore, Scott (1526) | Lost 0-2 | -171485 |
| top | average opponent: 1607record: 7-8 | new rating: 1485 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 262 | Whittington, Kelly (1304) | Lost 0-2 | -221478 |
| 2sealed | 362 | Kyotani, Jason (1465) | Won 2-1 | +181496 |
| 3sealed | 309 | Scott, David (1490) | Lost 1-2 | -181478 |
| 4sealed | 347 | Herrera, Daniel (1416) | Won 2-0 | +171495 |
| 5sealed | 240 | Dixon, Kier (1500) | Lost 0-2 | -181477 |
| 6sealed | 240 | Mercer, Matthew (1530) | Won 2-1 | +191496 |
| 7sealed | 186 | Fan, Jitao (1505) | Lost 0-2 | -181478 |
| top | average opponent: 1459record: 3-4 | new rating: 1478 | ||