De Coster, Jan
Current rating: 1649
Record: 90-62-3 (GP) / 7-11 (professional)
- 2007
- 2008
- 2009
- 2010
- 2011
- 2012
- 2013
| Grand Prix Gothenburg 2013 (DGM limited) | starting rating: 1695 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 319 | Al-Rubei, Julien Phillip Christian (1562) | Won 2-0 | +161711 |
| 2sealed | 122 | Hyldkrog, Rune Skjold (1485) | Lost 1-2 | -221689 |
| 3sealed | 170 | Pihl, Marcus (1459) | Lost 0-2 | -221667 |
| 4sealed | 350 | Leander, Erik (1674) | Won 2-1 | +181685 |
| 5sealed | 322 | Lukkarinen, Christoffe (1454) | Lost 0-2 | -221663 |
| 6sealed | 328 | Caro Domingo, Inigo (1407) | Lost 0-2 | -231640 |
| 7sealed | 290 | Peltola, Mikko (1448) | Won 2-0 | +151655 |
| 8sealed | 216 | Froehlich, Roman (1479) | Won 2-0 | +151670 |
| 9sealed | 169 | Urset, Antoine (1542) | Lost 1-2 | -211649 |
| top | average opponent: 1501record: 4-5 | new rating: 1649 | ||
| Grand Prix Bochum 2012 (RTR standard) | starting rating: 1768 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 179 | Schepman, Patrick (1350) | Won 2-0 | +111779 |
| 3standard | 90 | Collinet, Patrick (1664) | Lost 1-2 | -201759 |
| 4standard | 157 | Bosselmann, Tobias (1710) | Lost 1-2 | -191740 |
| 5standard | 211 | Winkler, Axel (1489) | Lost 0-2 | -231717 |
| 6standard | 258 | Peters, Sven (1486) | Lost 0-2 | -221695 |
| top | average opponent: 1540record: 1-4 | new rating: 1695 | ||
| Grand Prix Manchester 2012 (DKA limited) | starting rating: 1771 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 471 | Yin, Lai Chi (1465) | Won 2-0 | +131784 |
| 3sealed | 416 | Krautmann, Wenzel (1591) | Won 2-0 | +141798 |
| 4sealed | 457 | Fryer-Kelsey, James (1634) | Lost 0-2 | -211777 |
| 5sealed | 477 | Watsfeldt, Elias (1935) | Lost 0-2 | -151762 |
| 6sealed | 508 | Boyhan, Aaron (1522) | Won 2-1 | +141776 |
| 7sealed | 499 | Ludvi, Taavi (1600) | Won 2-1 | +151791 |
| 8sealed | 452 | McLellan, Scott (1534) | Lost 1-2 | -231768 |
| top | average opponent: 1612record: 4-3 | new rating: 1768 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1817 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 110 | Preto, Sergio (1594) | Won 2-1 | +141831 |
| 3sealed | 72 | Petrushchenko, Sergey (1653) | Won 2-1 | +151846 |
| 4sealed | 68 | Tajak, Lukas (1572) | Won 2-1 | +131859 |
| 5sealed | 9 | Matthies, Mario (1609) | Won 2-0 | +131872 |
| 6sealed | 7 | Antunovic, Dado (1543) | Won 2-1 | +131885 |
| 7sealed | 9 | Ruess, Jan (1742) | Lost 1-2 | -211864 |
| 8sealed | 22 | Ristovsky, Tom (1774) | Lost 1-2 | -201844 |
| 9sealed | 53 | Macosek, Jan (1697) | Won 2-0 | +161860 |
| 10draft | 57 | Stradner, Stefan (1824) | Lost 0-2 | -191841 |
| 11draft | 7 | Box, Jesper (1596) | Lost 1-2 | -221819 |
| 12draft | 24 | Arlt, Noomi (1531) | Won 2-1 | +131832 |
| 13draft | 28 | Downs, Austin (1528) | Lost 1-2 | -241808 |
| 14draft | 6 | Jaklovsky, Lukas (1897) | Lost 1-2 | -161792 |
| 15draft | 36 | Sokolowski, Konrad (1650) | Lost 0-2 | -211771 |
| top | average opponent: 1658record: 7-7 | new rating: 1771 | ||
| Grand Prix Paris 2011 (MBS limited) | starting rating: 1827 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 533 | Laurenchet, David (1518) | Won 2-1 | +131840 |
| 3sealed | 546 | Bailly-Maitre, Gael (1736) | Won 2-0 | +161856 |
| 4sealed | 579 | Monsen, Christer (1522) | Won 2-1 | +121868 |
| 5sealed | 539 | Portada, Pedro (1467) | Won 2-1 | +111879 |
| 6sealed | 518 | Dimitriadis, George (1532) | Lost 0-2 | -241855 |
| 7sealed | 543 | Swartz, Noah (1576) | Lost 1-2 | -231832 |
| 8sealed | 554 | Black, Samuel (1999) | Lost 0-2 | -151817 |
| top | average opponent: 1621record: 4-3 | new rating: 1817 | ||
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1869 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 33 | Bosselmann, Tobias (1663) | Won 2-0 | +141883 |
| 4sealed | 104 | Skalevik, Tore (1713) | Lost 1-2 | -211862 |
| 5sealed | 90 | Riffert, Till (1598) | Lost 0-2 | -231839 |
| 6sealed | 196 | Van Heukelom, Dries (1438) | Won 2-0 | +111850 |
| 7sealed | 121 | Zarges, Florian (1545) | Lost 1-2 | -231827 |
| top | average opponent: 1591record: 2-3 | new rating: 1827 | ||
| Grand Prix Gothenburg 2010 (M11 limited) | starting rating: 1830 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 567 | Odlander, Carl (1537) | Won 2-1 | +131843 |
| 4sealed | 502 | Johansson, Viktor (1500) | Won 2-0 | +121855 |
| 5sealed | 504 | Lyford-Smith, David (1373) | Lost 0-2 | -261829 |
| 6sealed | 539 | Becker, Mattias (1555) | Won 2-0 | +131842 |
| 7sealed | 520 | Woltjes, Geertjan (1656) | Won 2-0 | +141856 |
| 8sealed | 510 | Ahston, Kim (1597) | Won 2-1 | +141870 |
| 9sealed | 514 | Poquerusse, Remi (1788) | Won 2-1 | +161886 |
| 10draft | 57 | Floderus, Peter (1648) | Won 2-0 | +141900 |
| 11draft | 59 | Kajala, Jussi (1775) | Won 2-1 | +161916 |
| 12draft | 3 | Lund, Kim Robin (1698) | Lost 1-2 | -221894 |
| 13draft | 8 | Calcano, Christian (1741) | Lost 1-2 | -211873 |
| 14draft | 50 | Lindroos, Jani (1809) | Won 2-1 | +171890 |
| 15draft | 20 | Nosowicz, Karol (1725) | Lost 0-2 | -211869 |
| top | average opponent: 1646record: 9-4 | new rating: 1869 | ||
| Grand Prix Brussels 2010 (WWK standard) | starting rating: 1734 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 781 | Sekretarev, Nikita (1470) | Won 2-0 | +131747 |
| 3standard | 701 | De Bosscher, Michael (1472) | Won 2-0 | +131760 |
| 4standard | 673 | Wilbrand, Robert (1605) | Won 2-0 | +161776 |
| 5standard | 635 | Daniilidis, Kostas (1587) | Lost 1-2 | -221754 |
| 6standard | 660 | Bittner, Paul (1603) | Won 2-0 | +161770 |
| 7standard | 668 | Sevcik, Miroslav (1662) | Won 2-1 | +161786 |
| 8standard | 612 | Strubelj, Gregor (1578) | Won 2-0 | +141800 |
| 9standard | 612 | Schwarz, Sascha (1750) | Won 2-0 | +171817 |
| 10standard | 12 | Chiche, Kevin (1651) | Lost 1-2 | -211796 |
| 11standard | 49 | Lippi, Alessandro (1834) | Lost 1-2 | -171779 |
| 12standard | 79 | Gardner, Daniel J [ENG] (1786) | Lost 0-2 | -181761 |
| 13standard | 89 | Clark, Nicholas (1758) | Won 2-1 | +181779 |
| 14standard | 67 | Kotov, Anton (1547) | Won 2-0 | +141793 |
| 15standard | 44 | Saito, Tomoharu (2028) | Won 2-1 | +221815 |
| 16standard | 37 | Albanese, Federico (1654) | Won 2-1 | +151830 |
| top | average opponent: 1666record: 11-4 | new rating: 1830 | ||
| Grand Prix Paris 2009 (ZEN limited) | starting rating: 1756 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 612 | Dvoracek, Lukas (1519) | Lost 1-2 | -221734 |
| 4sealed | 855 | Lavor, Nicolas (1500) | Lost 0-2 | -221712 |
| 5sealed | 840 | Balette, Eliott (1500) | Won 2-0 | +141726 |
| 6sealed | 871 | Carpentier, Clement (1441) | Won 2-1 | +131739 |
| 7sealed | 748 | Guedj, Thomas (1657) | Won 2-0 | +171756 |
| 8sealed | 720 | Polonia, Jeremy (1562) | Lost 1-2 | -221734 |
| top | average opponent: 1530record: 3-3 | new rating: 1734 | ||
| Grand Prix Brighton 2009 (M10 limited) | starting rating: 1677 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 107 | Ruppenthal, Matthias (1589) | Won 2-0 | +161693 |
| 4sealed | 75 | Foster, James (1584) | Lost 0-2 | -201673 |
| 5sealed | 155 | Pereira, Nuno J (1647) | Won 2-0 | +181691 |
| 6sealed | 66 | Massicard, Yann (1975) | Won 2-1 | +231714 |
| 7sealed | 65 | Vidugiris, Gaudenis (1787) | Won 2-0 | +191733 |
| 8sealed | 17 | Mir, Narcis (1601) | Won 2-0 | +161749 |
| 9sealed | 9 | Nabi, Basil (1553) | Won 2-1 | +141763 |
| 10draft | 5 | Almelund, Joakim (1623) | Won 2-0 | +151778 |
| 11draft | 23 | Campanini, Tommaso (1653) | Lost 1-2 | -201758 |
| 12draft | 11 | Colombi, Giovanni (1647) | Lost 1-2 | -201738 |
| 13draft | 4 | Oberg, Kenny (1888) | Won 2-0 | +211759 |
| 14draft | 36 | Thompson, Gerry (1825) | Won 2-1 | +191778 |
| 15draft | 7 | Kanis, Jeroen (1569) | Lost 0-2 | -221756 |
| top | average opponent: 1688record: 9-4 | new rating: 1756 | ||
| Pro Tour Kyoto 2009 (CON standard) | starting rating: 1709 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 152 | Potovin, Nikolay (2037) | Won 2-0 | +241733 |
| 2standard | 34 | Barreiras, Igor (1566) | Lost 1-2 | -211712 |
| 3standard | 57 | Levy, Raphael (1948) | Lost 1-2 | -141698 |
| 4standard | 126 | Kumoura, Daisuke (1672) | Won 2-0 | +171715 |
| 5draft | 118 | Gallop, Max (1562) | Lost 0-2 | -201695 |
| 6draft | 157 | Bland, Richard (1754) | Won 2-1 | +191714 |
| 7draft | 116 | Moore, John (1644) | Won 1-0 | +161730 |
| 8draft | 55 | van Riet, Luis (1666) | Lost 0-2 | -191711 |
| 9draft | 21 | Karsten, Frank (1990) | Lost 0-2 | -131698 |
| 10draft | 20 | Campbell, Blaine (1498) | Lost 0-2 | -211677 |
| top | average opponent: 1734record: 4-6 | new rating: 1677 | ||
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1739 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 34 | Hornansky, Richard (1570) | Lost 1-2 | -211718 |
| 5sealed | 114 | Spegt, Christian (1539) | Won 2-1 | +151733 |
| 6sealed | 42 | Picciafuochi, Riccardo (1575) | Lost 1-2 | -211712 |
| 7sealed | 79 | Rehak, Jan (1583) | Won 2-0 | +161728 |
| 8sealed | 64 | Corsanini, Michele (1672) | Lost 0-2 | -191709 |
| top | average opponent: 1588record: 2-3 | new rating: 1709 | ||
| Pro Tour Berlin 2008 (extended) | starting rating: 1786 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 57 | Dahlke, Philipp (1628) | Lost 1-2 | -211765 |
| 2extended | 132 | Sowards, Jerry (1488) | Lost 1-2 | -231742 |
| 3extended | 213 | Penick, John (1743) | Won 2-0 | +181760 |
| 4extended | 188 | Sadeghpour, Johan (1794) | Lost 0-2 | -181742 |
| 5extended | 185 | Mooney, Clayton (1641) | Lost 0-2 | -191723 |
| 6extended | 192 | Bohny, Nico (1910) | Won 2-1 | +211744 |
| 7extended | 156 | Romao, Carlos (1793) | Won 2-0 | +191763 |
| 8extended | 138 | Van Lunen, Jacob (1450) | Lost 0-2 | -241739 |
| top | average opponent: 1681record: 3-5 | new rating: 1739 | ||
| Grand Prix Paris 2008 (ALA limited) | starting rating: 1693 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 579 | Vermehren, Nils (1599) | Won 2-1 | +161709 |
| 5sealed | 550 | Renner, Mark (1669) | Won 2-0 | +171726 |
| 6sealed | 519 | Kostadinov, Dimitre (1618) | Won 2-0 | +161742 |
| 7sealed | 501 | Huber, Christoph (1862) | Won 2-1 | +201762 |
| 8sealed | 502 | Wechsel, Alexander (1897) | Lost 0-2 | -151747 |
| 9sealed | 510 | Stok, Alex (1515) | Draw 0-0 | -41743 |
| 10draft | 28 | Tyssens, Geert (1597) | Won 2-1 | +151758 |
| 11draft | 2 | Chronopoulos, Bill (1636) | Lost 0-2 | -201738 |
| 12draft | 22 | Passin, Mathias (1610) | Won 2-0 | +161754 |
| 13draft | 45 | Gateaud, Maxime (1623) | Won 2-0 | +151769 |
| 14draft | 32 | Wagner, Rob C (1645) | Won 2-1 | +161785 |
| 15draft | 8 | Hebky, Michal (1737) | Won 2-0 | +171802 |
| Qdraft | van Leeuwen, Arjan (1887) | Lost 0-2 | -161786 | |
| top | average opponent: 1684record: 9-3-1 | new rating: 1786 | ||
| Grand Prix Madrid 2008 (EVE limited) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 7 | Moore, Richard N (1730) | Won 2-0 | +211593 |
| 4sealed | 5 | Gomez, Jose Luis (1620) | Won 2-1 | +191612 |
| 5sealed | 2 | van de Veen, Steffen (1658) | Won 2-0 | +181630 |
| 6sealed | 19 | Alberto, Juan (1537) | Won 2-0 | +171647 |
| 7sealed | 4 | Borba, Rodrigo (1700) | Lost 1-2 | -171630 |
| 8sealed | 10 | Nesi, Eugenio (1746) | Won 2-1 | +201650 |
| 9sealed | 9 | Gonzalez Hidalgo, Francisco Jose (1591) | Draw 1-1 | -11649 |
| 10draft | 29 | Sierra, David (1648) | Won 2-0 | +181667 |
| 11draft | 47 | Cardenal Fernandez, Marcos (1867) | Won 2-0 | +211688 |
| 12draft | 9 | Marti, Enric (1686) | Lost 0-2 | -181670 |
| 13draft | 11 | Salas, Camilo (1674) | Lost 1-2 | -181652 |
| 14draft | 11 | Hernandez Chillon, Alberto (1562) | Won 2-0 | +171669 |
| 15draft | 25 | Levy, Raphael (2006) | Won 2-0 | +241693 |
| top | average opponent: 1694record: 9-3-1 | new rating: 1693 | ||
| Grand Prix Brussels 2008 (SHM limited) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 76 | Maestro, Roberto (1578) | Won 2-0 | +181584 |
| 5sealed | 11 | Martin, Quentin (1873) | Won 2-1 | +231607 |
| 6sealed | 11 | Tenenbaum, Amiel (1886) | Lost 0-2 | -131594 |
| 7sealed | 27 | Lynch, Gary (1537) | Won 2-1 | +171611 |
| 8sealed | 12 | Schetter, Jerome (1559) | Lost 0-2 | -191592 |
| 9sealed | 42 | Fornasari, Michele (1646) | Won 2-0 | +191611 |
| 10draft | 47 | Chooi, Yew Vern (1551) | Lost 1-2 | -191592 |
| 11draft | 13 | Willems, Sjoerd (1563) | Won 2-0 | +181610 |
| 12draft | 37 | Zhang, Yin (1584) | Lost 1-2 | -191591 |
| 13draft | 7 | Patriarca, Joffrey (1533) | Lost 0-2 | -191572 |
| top | average opponent: 1631record: 5-5 | new rating: 1572 | ||
| Grand Prix Stuttgart 2007 (LRW limited) | starting rating: 1583 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 24 | Panara, Bruno (1711) | Won 2-1 | +201603 |
| 4sealed | 46 | Nakamura, Shuhei (1836) | Lost 0-2 | -141589 |
| 5sealed | 130 | Scharfe, Tai (1558) | Lost 1-2 | -191570 |
| 6sealed | 109 | Taylor, Nicholas (1411) | Won 2-0 | +161586 |
| 7sealed | 111 | Leonardo, Pablo (1505) | Lost 1-2 | -201566 |
| top | average opponent: 1604record: 2-3 | new rating: 1566 | ||
| Grand Prix Florence 2007 (Time Spiral block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 39 | Morini, David (1500) | Won 2-1 | +181518 |
| 2block | 26 | Johnson, Sven (1515) | Won 2-1 | +181536 |
| 3block | 52 | Biasio, Stefano (1540) | Won 2-1 | +181554 |
| 4block | 68 | Guedj, Tristan (1690) | Lost 0-2 | -151539 |
| 5block | 55 | Agostini, Giovanni (1667) | Won 2-0 | +201559 |
| 6block | 56 | Vogt, Adrian (1559) | Won 2-1 | +181577 |
| 7block | 40 | Epp, Sacha (1494) | Won 2-0 | +161593 |
| 8block | 24 | Magri, Saverio (1598) | Lost 0-2 | -181575 |
| 9block | 51 | Spillo, Stefano (1654) | Won 2-0 | +201595 |
| 10block | 26 | Benzi, Luca (1569) | Won 2-0 | +171612 |
| 11block | 17 | Karsten, Frank (2006) | Draw 1-1 | +71619 |
| 12block | 25 | Nuijten, Julien (1717) | Lost 1-2 | -161603 |
| 13block | 38 | Negrini, Matteo (1556) | Lost 0-2 | -191584 |
| 14block | 50 | Filippini, Gianluca (1537) | Won 2-0 | +171601 |
| 15block | 37 | Mygh, Sebastian (1561) | Lost 1-2 | -181583 |
| top | average opponent: 1611record: 9-5-1 | new rating: 1583 | ||