Tuinstra, Sebastiaan
Current rating: 1618
Record: 80-68-1
- 2005
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- 2023
| Regional Championships Naples 2023 (ONE standard) | starting rating: 1644 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 45 | Garcia Guerrero, Luis (1654) | Lost 1-2 | -171627 |
| 2standard | 217 | Kosa, Zoltan (1756) | Won 2-1 | +201647 |
| 3standard | 131 | Rosdahl, Alexander (1884) | Lost 1-2 | -141633 |
| 4standard | 195 | Triantafillou, Dimitris (1686) | Won 2-1 | +191652 |
| 5standard | 106 | Martos, Antonio (1686) | Won 2-1 | +191671 |
| 6standard | 109 | Bruschi, Matteo (1568) | Lost 1-2 | -201651 |
| 7standard | 139 | Faustino, Javier (1757) | Lost 0-2 | -161635 |
| 8standard | 126 | Hristov, Lenard (1729) | Lost 0-2 | -171618 |
| top | average opponent: 1715record: 3-5 | new rating: 1618 | ||
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1623 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 31 | Bruck, Steve (1461) | Won 2-1 | +151638 |
| 2pioneer | 356 | Cooman, Andy (1555) | Won 2-1 | +161654 |
| 3pioneer | 84 | Cordobes Gel, Albert (1568) | Won 2-1 | +171671 |
| 4pioneer | 172 | Hecker, Julian (1664) | Won 2-1 | +181689 |
| 5pioneer | 100 | Albert, Francois (1465) | Won 2-0 | +141703 |
| 6pioneer | 22 | Esser, Ralph (1530) | Lost 1-2 | -221681 |
| 7pioneer | 58 | Brandstetter, Hannes (1732) | Lost 1-2 | -171664 |
| 8pioneer | 147 | Criscuolo, Thomas (1553) | Lost 1-2 | -201644 |
| top | average opponent: 1566record: 5-3 | new rating: 1644 | ||
| Grand Prix Utrecht 2019 (ELD limited) | starting rating: 1575 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 467 | Kling, Jordi (1500) | Won 2-1 | +171592 |
| 2sealed | 340 | Quarmby, Mark (1481) | Won 1-0 | +161608 |
| 3sealed | 175 | Thormahlen, Bruno (1819) | Won 2-1 | +221630 |
| 4sealed | 20 | Both, Marco (1804) | Won 2-0 | +211651 |
| 5sealed | 41 | Klein, Fabian (1722) | Lost 0-2 | -171634 |
| 6sealed | 72 | Schmejkal, Moritz (1806) | Lost 1-2 | -151619 |
| 7sealed | 226 | Zimmermann, Raoul (1934) | Won 2-1 | +241643 |
| 8sealed | 148 | Ebert, Felix (1523) | Lost 0-2 | -201623 |
| top | average opponent: 1699record: 5-3 | new rating: 1623 | ||
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1613 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 725 | Azzini, Sebastian (1518) | Won 2-0 | +161629 |
| 2sealed | 980 | Vacher, Nicolas (1506) | Won 2-0 | +161645 |
| 3sealed | 207 | Garcia Mora, David (1663) | Lost 1-2 | -181627 |
| 4sealed | 536 | Molnar, Richard (1457) | Lost 1-2 | -211606 |
| 5sealed | 677 | Burchett, Autumn (1951) | Lost 0-2 | -121594 |
| 6sealed | 821 | Marquilly, Julien (1551) | Lost 0-2 | -191575 |
| top | average opponent: 1608record: 2-4 | new rating: 1575 | ||
| Grand Prix Lille 2018 (GRN standard) | starting rating: 1702 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 354 | Febvre, Emmanuel (1500) | Won 2-1 | +141716 |
| 2standard | 6 | Budde, Christopher (1654) | Lost 0-2 | -191697 |
| 3standard | 468 | Lemke, Gero (1676) | Lost 1-2 | -181679 |
| 4standard | 482 | Kedryna, Jerome (1445) | Lost 0-2 | -231656 |
| 5standard | 590 | Pots, Maurice (1422) | Lost 1-2 | -221634 |
| 6standard | 539 | Fischer, Sven (1441) | Lost 0-2 | -211613 |
| top | average opponent: 1523record: 1-5 | new rating: 1613 | ||
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1718 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 2 | Endle, Heiko (1499) | Won 2-1 | +141732 |
| 4standard | 39 | Mendez Rodriguez, Eduardo (1574) | Won 2-1 | +161748 |
| 5standard | 49 | Van Doesburg, Steven (1503) | Lost 1-2 | -231725 |
| 6standard | 131 | Fenaux-Briot, Romain (1753) | Won 2-1 | +191744 |
| 7standard | 35 | Whyte, Ailsa (1482) | Lost 1-2 | -231721 |
| 8standard | 88 | Laguerre, Mathieu (1657) | Lost 1-2 | -191702 |
| top | average opponent: 1578record: 3-3 | new rating: 1702 | ||
| Grand Prix Metz 2017 (HOU limited) | starting rating: 1748 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 241 | Vanhapiha, Lauri (1510) | Won 2-1 | +131761 |
| 2sealed | 114 | Hukka, Jori (1686) | Lost 1-2 | -191742 |
| 3sealed | 450 | Maurice, Leo (1476) | Won 2-1 | +131755 |
| 4sealed | 257 | Pinet, Vincent (1875) | Lost 1-2 | -151740 |
| 5sealed | 487 | Goddard, Sean (1563) | Lost 0-2 | -221718 |
| top | average opponent: 1622record: 2-3 | new rating: 1718 | ||
| Grand Prix Amsterdam 2017 (AKH standard) | starting rating: 1739 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 109 | Gebhards, Christoph (1390) | Won 2-1 | +121751 |
| 2standard | 173 | Wardenier, Niels (1467) | Lost 1-2 | -241727 |
| 3standard | 442 | Eggen, Oddbjorn (1508) | Won 2-1 | +151742 |
| 4standard | 261 | Idelfonso, Diony (1661) | Won 2-0 | +161758 |
| 5standard | 276 | van der Meer, Thijs (1739) | Won 2-0 | +181776 |
| 6standard | 87 | Genz, Christian (1597) | Lost 0-2 | -211755 |
| 7standard | 141 | Rennie, David (1417) | Won 2-1 | +121767 |
| 8standard | 176 | Schaller, Sebastian (1718) | Lost 1-2 | -191748 |
| top | average opponent: 1562record: 5-3 | new rating: 1748 | ||
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1691 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 69 | Bismo, Ryan (1463) | Won 2-1 | +141705 |
| 2standard | 54 | Copestake, Jack (1464) | Won 2-0 | +141719 |
| 3standard | 308 | Hurink, Maarten (1738) | Lost 1-2 | -181701 |
| 4standard | 198 | Vieren, Peter (1939) | Won 2-0 | +221723 |
| 5standard | 139 | Chapman, Craig (1734) | Lost 1-2 | -181705 |
| 6standard | 255 | Gammaitoni, Eli (1829) | Won 2-1 | +211726 |
| 7standard | 281 | Brunel, Alexandre (1428) | Won 2-0 | +121738 |
| 8standard | 124 | Sloo, Felix (1530) | Won 2-0 | +151753 |
| 9standard | 111 | Fortier, Remi (1964) | Won 2-1 | +211774 |
| 10standard | 77 | Meis, Robin (1621) | Won 2-0 | +161790 |
| 11standard | 39 | Descamps, Benjamin (1736) | Lost 1-2 | -191771 |
| 12standard | 75 | Van Koekenbeek, Benjamin (1687) | Won 2-1 | +161787 |
| 13standard | 56 | Lahonen, Leo (1793) | Lost 0-2 | -181769 |
| 14standard | 57 | Miani, Davide (1839) | Lost 0-2 | -171752 |
| 15standard | 96 | Gerschenson, Immanuel (1983) | Lost 0-2 | -131739 |
| top | average opponent: 1717record: 9-6 | new rating: 1739 | ||
| Grand Prix Paris 2016 (OGW standard) | starting rating: 1717 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 159 | Desax, Conn (1682) | Lost 0-2 | -191698 |
| 3standard | 428 | Le Moigne, Enoal (1435) | Lost 1-2 | -221676 |
| 4standard | 565 | Strijd, Robin (1385) | Won 2-0 | +131689 |
| 5standard | 416 | Daillencourt, Willy (1426) | Lost 1-2 | -231666 |
| 6standard | 517 | Waugh, Nick (1413) | Won 2-0 | +131679 |
| 7standard | 416 | Van Immerseel, Johan (1612) | Won 2-1 | +171696 |
| 8standard | 350 | Musil, Jiri (1537) | Won 2-0 | +151711 |
| 9standard | 184 | Zaitsev, Alexey (1581) | Lost 0-2 | -201691 |
| top | average opponent: 1509record: 4-4 | new rating: 1691 | ||
| Grand Prix Brussels 2015 (BFZ standard) | starting rating: 1710 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 257 | Hansen, Lasse Bo (1703) | Won 2-0 | +181728 |
| 4standard | 18 | Czuron, Alan (1527) | Won 2-1 | +141742 |
| 5standard | 90 | Habert, Alexandre (1808) | Lost 1-2 | -161726 |
| 6standard | 132 | Vantyghem, Xavier (1574) | Won 2-1 | +151741 |
| 7standard | 130 | Grauwiler, Lukas (1517) | Lost 1-2 | -221719 |
| 8standard | 192 | Ronai, Arpad (1680) | Won 2-1 | +171736 |
| 9standard | 139 | Collinet, Patrick (1677) | Lost 0-2 | -191717 |
| top | average opponent: 1641record: 4-3 | new rating: 1717 | ||
| Grand Prix Copenhagen 2015 (modern) | starting rating: 1682 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 32 | Kristensen, Nicklas (1518) | Won 2-0 | +151697 |
| 3modern | 45 | Calligaro, Laurent (1805) | Won 2-0 | +201717 |
| 4modern | 44 | Mueller, Dominic (1681) | Lost 1-2 | -191698 |
| 5modern | 261 | Schoenberger, Dennis (1736) | Won 2-1 | +191717 |
| 6modern | 134 | Geertsen, Ditlev (1574) | Lost 1-2 | -211696 |
| 7modern | 168 | Hjortshoej, Henrik (1497) | Won 2-1 | +141710 |
| 8modern | 180 | Heidemueller, Susann (1505) | Won 2-0 | +151725 |
| 9modern | 113 | Chronopoulos, Bill (1911) | Lost 0-2 | -151710 |
| top | average opponent: 1653record: 5-3 | new rating: 1710 | ||
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1590 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 2103 | Verhallen, Jeroen (1540) | Lost 1-2 | -191571 |
| 4sealed | 2283 | Rooney, Jonathan (1427) | Won 2-1 | +161587 |
| 5sealed | 2067 | Sabel, Dion (1620) | Won 2-1 | +181605 |
| 6sealed | 2079 | Hamann, Andreas (1542) | Won 2-1 | +171622 |
| 7sealed | 2023 | Gherbezza, Romain (1780) | Lost 0-2 | -151607 |
| 8sealed | 2108 | Nicoud, Sacha (1595) | Won 2-0 | +181625 |
| 9sealed | 2074 | Scholtens, Desmond (1615) | Won 2-0 | +181643 |
| 10draft | 1178 | Fortier, Remi (1799) | Won 2-0 | +201663 |
| 11draft | 1153 | D'Espinay, Geoffroy (1547) | Won 2-0 | +161679 |
| 12draft | 1058 | Arndt, Georg (1787) | Won 2-1 | +201699 |
| 13draft | 1111 | Lindgren, Tommi (1749) | Won 2-1 | +191718 |
| 14draft | 1164 | Gerbersdorf, Viktor (1603) | Lost 0-2 | -201698 |
| 15draft | 1040 | Havlik, Michal (1782) | Lost 1-2 | -161682 |
| top | average opponent: 1645record: 9-4 | new rating: 1682 | ||
| Grand Prix Madrid 2014 (modern) | starting rating: 1555 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 315 | Fraile, David (1397) | Won 2-0 | +161571 |
| 2modern | 33 | Oliveira, Goncalo (1560) | Won 2-0 | +171588 |
| 3modern | 280 | Perez, Daniel 2485 (1522) | Won 2-1 | +171605 |
| 4modern | 126 | Cellana, Alessandro (1429) | Won 2-1 | +151620 |
| 5modern | 41 | Berent, Walter (1572) | Won 2-1 | +171637 |
| 6modern | 38 | Del Moral Leon, Antonio (1785) | Lost 1-2 | -151622 |
| 7modern | 46 | Carrasco, Pablo (1541) | Won 2-1 | +161638 |
| 8modern | 53 | Tomelitsch, Patrick (1817) | Lost 1-2 | -141624 |
| 9modern | 171 | Bonifacio da Costa, Vasco (1730) | Won 2-1 | +201644 |
| 10modern | 68 | Perez Aznar, Bernardo (1670) | Lost 1-2 | -181626 |
| 11modern | 96 | Jorborg, Julius (1597) | Lost 1-2 | -191607 |
| 12modern | 99 | Splendori, Giuseppe (1532) | Won 2-0 | +171624 |
| 13modern | 77 | Grati, Pedro (1660) | Lost 1-2 | -171607 |
| 14modern | 97 | Gomez, Victor (1685) | Lost 1-2 | -171590 |
| top | average opponent: 1607record: 8-6 | new rating: 1590 | ||
| Grand Prix Antwerp 2013 (modern) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 16 | Schoot, Ray (1500) | Won 2-0 | +171552 |
| 2modern | 120 | Alfano, Valentin (1515) | Won 2-0 | +181570 |
| 3modern | 309 | Mohr, Felix (1575) | Lost 1-2 | -181552 |
| 4modern | 398 | Nguyen-Khac, Hung-Anh (1625) | Won 2-1 | +191571 |
| 5modern | 245 | Deibler, Christian (1616) | Lost 1-2 | -171554 |
| 6modern | 392 | Hauck, Christian (1745) | Won 2-1 | +211575 |
| 7modern | 162 | Bresser, Nick (1479) | Lost 1-2 | -201555 |
| top | average opponent: 1579record: 4-3 | new rating: 1555 | ||
| Grand Prix Bochum 2012 (RTR standard) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 68 | Schwenke, Steph (1528) | Won 2-0 | +191523 |
| 5standard | 24 | Rosinski, Dennis (1620) | Lost 1-2 | -171506 |
| 6standard | 36 | Maly, Ondrej (1580) | Won 2-0 | +201526 |
| 7standard | 50 | Arndt, Georg (1591) | Lost 1-2 | -171509 |
| 8standard | 83 | Neumann, Joaquim (1510) | Won 2-1 | +181527 |
| 9standard | 57 | Hansen, Alexander (1528) | Won 2-1 | +181545 |
| 10standard | 53 | Wilssen, Andreas (1583) | Lost 0-2 | -171528 |
| 11standard | 95 | Beirich, Christian (1582) | Won 2-1 | +191547 |
| 12standard | 62 | Filatriau, Franck (1580) | Won 2-1 | +181565 |
| 13standard | 53 | Wallbaum, Jan (1618) | Lost 1-2 | -171548 |
| 14standard | 67 | Diehl, Kristof (1577) | Won 2-1 | +191567 |
| 15standard | 46 | Frenster, Jochen (1554) | Lost 1-2 | -181549 |
| 16standard | 47 | Aurejac, Alexandre (1787) | Lost 0-2 | -141535 |
| top | average opponent: 1588record: 7-6 | new rating: 1535 | ||
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 204 | Chaplin, Ian (1500) | Lost 0-2 | -181482 |
| 2extended | 391 | Tolomei, Luciano (1482) | Won 2-1 | +181500 |
| 3extended | 345 | Brookes, Craig (1483) | Draw 1-1 | 01500 |
| 4extended | 305 | Beyer, Sebastian (1531) | Won 2-0 | +181518 |
| 5extended | 212 | Ambrassat, Sebastian (1537) | Lost 0-2 | -171501 |
| 6extended | 279 | Warcholik, Manuel (1502) | Won 2-0 | +181519 |
| 7extended | 202 | Boccardo, Francesco (1525) | Won 2-0 | +181537 |
| 8extended | 140 | Peset, Alexandre (1790) | Lost 1-2 | -141523 |
| 9extended | 141 | Giuliani, Aldo (1468) | Lost 0-2 | -191504 |
| top | average opponent: 1535record: 4-4-1 | new rating: 1504 | ||