Kogan, Alexander
Current rating: 1433
Record: 29-35-1
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1377 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 412 | Rocher, Gertraud (1384) | Won 1-0 | +181395 |
| 2sealed | 262 | Dominguez, Francisco (1602) | Lost 0-2 | -141381 |
| 3sealed | 474 | Hermes, Maxime (1684) | Won 2-0 | +231404 |
| 4sealed | 508 | Busi, Yanez (1760) | Lost 0-2 | -121392 |
| 5sealed | 676 | Olejarski, Jakub (1500) | Lost 0-2 | -161376 |
| 6sealed | 576 | Fryca, Robert (1348) | Won 2-0 | +181394 |
| 7sealed | 482 | Glizniewicz, Piotr (1505) | Won 2-1 | +201414 |
| 8sealed | 296 | Berger, Maximilien (1462) | Won 2-1 | +191433 |
| top | average opponent: 1531record: 5-3 | new rating: 1433 | ||
| Grand Prix Lille 2012 (DKA standard) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 610 | Brenner, Martin (1561) | Lost 0-2 | -151402 |
| 2standard | 761 | Bouthois, Romain (1471) | Lost 0-2 | -171385 |
| 3standard | 789 | Duguey, Olivier (1458) | Won 2-1 | +191404 |
| 4standard | 785 | Norman, Charles (1430) | Lost 0-2 | -171387 |
| 5standard | 835 | Ellwanger, Antje (1385) | Won 2-0 | +181405 |
| 6standard | 754 | Buchholtz, Gregory (1448) | Lost 0-2 | -181387 |
| 7standard | 789 | Kuca, Jeremie (1529) | Lost 1-2 | -151372 |
| 8standard | 756 | Korbl, Adorjan (1550) | Lost 1-2 | -151357 |
| 9standard | 738 | Chanussot, Fabian (1445) | Won 2-0 | +201377 |
| top | average opponent: 1475record: 3-6 | new rating: 1377 | ||
| Grand Prix Milan 2011 (ISD limited) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 697 | Colombo, Marco (1500) | Lost 1-2 | -171443 |
| 2sealed | 781 | Scataglini, Matteo (1481) | Won 2-0 | +181461 |
| 3sealed | 787 | Orsucci, Simone (1500) | Won 2-0 | +191480 |
| 4sealed | 751 | Rodrigues, Thiago (1479) | Won 2-0 | +181498 |
| 5sealed | 661 | Peille, Clement (1623) | Lost 0-2 | -161482 |
| 6sealed | 668 | Klepczarek, Lukasz (1589) | Lost 1-2 | -161466 |
| 7sealed | 748 | Belletti, Davide (1501) | Lost 0-2 | -171449 |
| 8sealed | 685 | Hollmann, Marc (1651) | Lost 1-2 | -151434 |
| 9sealed | 656 | Gimbel, Robin (1464) | Lost 1-2 | -171417 |
| top | average opponent: 1532record: 3-6 | new rating: 1417 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 171 | Kalich, Jiri (1500) | Lost 0-1 | -181498 |
| 2sealed | 177 | Dorle, Ludovic (1394) | Lost 0-2 | -201478 |
| 3sealed | 250 | Hallberg, Niklas (1492) | Lost 0-2 | -181460 |
| 4sealed | 280 | Popelka, Petr (1412) | Won 2-1 | +171477 |
| 5sealed | 251 | Bachura, Miroslav (1512) | Lost 0-2 | -171460 |
| top | average opponent: 1462record: 1-4 | new rating: 1460 | ||
| Grand Prix London 2011 (MBS limited) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 245 | Green, Oliver (1500) | Won 2-0 | +171560 |
| 2sealed | 287 | Schouppe, Jonathan (1483) | Lost 0-2 | -191541 |
| 3sealed | 300 | Alonso Machon, Raul (1490) | Won 2-1 | +171558 |
| 4sealed | 271 | Waldenberger, Marc (1519) | Lost 1-2 | -191539 |
| 5sealed | 293 | Helmersson, Petter (1509) | Won 2-1 | +171556 |
| 6sealed | 292 | Waine, Daniel B (1515) | Lost 0-2 | -181538 |
| 7sealed | 283 | Skrypov, Igor (1455) | Lost 0-2 | -201518 |
| 8sealed | 275 | Perikleous, George (1433) | Lost 1-2 | -191499 |
| 9sealed | 264 | Wooles, Bertie (1464) | Won 2-0 | +171516 |
| top | average opponent: 1485record: 4-5 | new rating: 1516 | ||
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 107 | Schwankl, Andre (1548) | Lost 0-2 | -171490 |
| 2sealed | 347 | Buermann, Sebastian (1482) | Won 2-1 | +181508 |
| 3sealed | 291 | Scheper, Theo (1434) | Won 2-0 | +171525 |
| 4sealed | 207 | David, Sven (1518) | Won 2-1 | +171542 |
| 5sealed | 74 | Vazquez, Francisco Fidel (1627) | Lost 1-2 | -161526 |
| 6sealed | 171 | Mikuscak, Daniel (1459) | Won 2-1 | +171543 |
| 7sealed | 113 | Bonnie, Chris (1540) | Draw 1-1 | 01543 |
| top | average opponent: 1515record: 4-2-1 | new rating: 1543 | ||
| Grand Prix Brussels 2010 (WWK standard) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 79 | Krusche, Bjoern (1500) | Won 2-1 | +191499 |
| 2standard | 196 | Grumelli, Riccardo (1500) | Lost 1-2 | -181481 |
| 3standard | 245 | Kuenzli, Michael (1499) | Lost 1-2 | -181463 |
| 4standard | 340 | Kontvainis, Juozas (1507) | Won 2-1 | +191482 |
| 5standard | 248 | Kullick, Rene (1500) | Won 2-1 | +181500 |
| 6standard | 141 | Grafensteiner, Tobias (1849) | Lost 1-2 | -121488 |
| 7standard | 212 | Montanari, Mattia (1508) | Won 2-1 | +191507 |
| 8standard | 162 | Markos, Daniel (1432) | Won 2-1 | +161523 |
| 9standard | 104 | De Bruijn, Vincent (1636) | Lost 0-2 | -161507 |
| top | average opponent: 1548record: 5-4 | new rating: 1507 | ||
| Grand Prix Copenhagen 2008 (EVE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 153 | Christensson, Thommy (1463) | Won 2-1 | +171517 |
| 2standard | 51 | Juergens, Dorian (1633) | Lost 1-2 | -161501 |
| 3standard | 185 | Schram, Robert (1448) | Lost 1-2 | -191482 |
| 4standard | 239 | Pedersen, Karina Y (1450) | Lost 0-2 | -181464 |
| 5standard | 254 | Dutreige, Nicolas (1456) | Won 2-1 | +181482 |
| 6standard | 202 | Frisk, Morten K (1486) | Lost 1-2 | -181464 |
| 7standard | 194 | Umesaki, Naoaki (1375) | Lost 1-2 | -201444 |
| 8standard | 170 | Dahl, Kim (1449) | Won 2-0 | +181462 |
| 9standard | 136 | Gillesberg, Jonas Snog (1462) | Won 2-0 | +181480 |
| top | average opponent: 1469record: 4-5 | new rating: 1480 | ||