Cook, James J
Current rating: 1612
Record: 27-21-1
| Grand Prix London 2018 (RIX limited) | starting rating: 1646 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 324 | De Swarte, Daniel (1559) | Won 2-0 | +171663 |
| 2sealed | 364 | Estratti, Samuele (1704) | Lost 1-2 | -181645 |
| 3sealed | 569 | Van Goethem, Stijn (1732) | Lost 0-2 | -161629 |
| 4sealed | 873 | Helbig, Martin (1661) | Lost 0-2 | -171612 |
| top | average opponent: 1664record: 1-3 | new rating: 1612 | ||
| Grand Prix Liverpool 2017 (XLN limited) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 117 | Sikorski, Tomasz (1471) | Won 2-0 | +151645 |
| 2sealed | 143 | Ouarmassi, Yedir (1549) | Lost 1-2 | -191626 |
| 3sealed | 453 | Anderson, Dani (1480) | Won 2-0 | +151641 |
| 4sealed | 330 | Wernecke, Andreas (1488) | Lost 0-2 | -211620 |
| 5sealed | 292 | Gladders, Keith (1550) | Won 2-1 | +171637 |
| 6sealed | 296 | Cogbill, James (1621) | Won 2-1 | +181655 |
| 7sealed | 104 | Larcombe, Owain (1524) | Won 2-1 | +151670 |
| 8sealed | 62 | Jenkins, Joseph (1517) | Won 2-0 | +151685 |
| 9sealed | 107 | Woodward, Jordan (1613) | Lost 0-2 | -191666 |
| 10draft | 112 | Hecht, Stefan (1587) | Won 2-1 | +171683 |
| 11draft | 109 | Panchartek, Zbysek (1837) | Lost 1-2 | -161667 |
| 12draft | 81 | Chesi, Florent (1564) | Won 2-1 | +171684 |
| 13draft | 162 | Fradl, Bernhard (1593) | Lost 1-2 | -201664 |
| 15draft | 58 | Schwass, Mark (1677) | Lost 0-2 | -181646 |
| top | average opponent: 1576record: 8-6 | new rating: 1646 | ||
| Grand Prix London 2016 (KLD limited) | starting rating: 1574 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 366 | Vassallo, Luke (1793) | Won 2-1 | +221596 |
| 4sealed | 50 | Summers, Dylan (1556) | Won 2-0 | +171613 |
| 5sealed | 48 | Wren, Daniel (1647) | Won 2-0 | +191632 |
| 6sealed | 12 | Joly, Louis (1594) | Lost 0-2 | -191613 |
| 7sealed | 157 | Tanner, Craig (1574) | Won 2-0 | +171630 |
| 8sealed | 47 | Boyhan, Aaron (1887) | Won 2-1 | +231653 |
| 9sealed | 20 | Coimbra, Andre (1981) | Won 2-1 | +241677 |
| 10draft | 97 | Aristei, Alessandro (1860) | Lost 0-2 | -151662 |
| 11draft | 283 | Fernandes, Ivo (1729) | Lost 0-2 | -171645 |
| 12draft | 161 | Eager, Nathan (1573) | Lost 1-2 | -191626 |
| 13draft | 302 | Kerem, Hannes (1814) | Won 2-1 | +211647 |
| 14draft | 242 | Nunn, Richard (1695) | Lost 0-2 | -171630 |
| top | average opponent: 1725record: 7-5 | new rating: 1630 | ||
| Grand Prix London 2015 (ORI standard) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 72 | Granados, Xavier (1578) | Lost 1-2 | -171521 |
| 4standard | 61 | Knight, James (1499) | Won 2-1 | +181539 |
| 5standard | 161 | Breddy, Ed (1471) | Won 2-1 | +161555 |
| 6standard | 47 | Clarke, Patrick J (1552) | Won 2-1 | +181573 |
| 7standard | 64 | Kowalewski, Patrick (1609) | Won 2-0 | +191592 |
| 8standard | 28 | Turkoglu, Umut (1641) | Lost 0-2 | -171575 |
| 9standard | 54 | White, Keith (1527) | Draw 1-1 | -11574 |
| top | average opponent: 1554record: 4-2-1 | new rating: 1574 | ||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 257 | Pannekoek, Andre (1479) | Won 2-0 | +181497 |
| 2block | 298 | Kalter, Chris (1532) | Won 2-0 | +191516 |
| 3block | 534 | Staton, Sam (1470) | Lost 0-2 | -191497 |
| 4block | 251 | Fletcher, Joel (1520) | Won 2-1 | +191516 |
| 5block | 228 | Miller, Ben [ENG] (1535) | Lost 1-2 | -181498 |
| 6block | 231 | Blaszczak, Rafal (1433) | Won 2-1 | +171515 |
| 7block | 238 | Webster, Ross (1524) | Won 2-1 | +181533 |
| 8block | 356 | Bonneau, Alexandre (1865) | Lost 0-2 | -121521 |
| 9block | 189 | Johns, Darryl (1491) | Won 2-0 | +171538 |
| top | average opponent: 1539record: 6-3 | new rating: 1538 | ||
| Grand Prix London 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 221 | Strozzi, Filippo (1443) | Lost 0-2 | -191481 |
| 2sealed | 759 | Mccrindle, Jordan (1486) | Won 2-0 | +181499 |
| 3sealed | 498 | Baker, Keef (1411) | Lost 0-2 | -201479 |
| top | average opponent: 1447record: 1-2 | new rating: 1479 | ||