Vlek de Coningh, Mark
Current rating: 1676
Record: 33-28-1
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 475 | Talewski, Grzegorz (1657) | Lost 0-2 | -161507 |
| 2sealed | 559 | Glizniewicz, Piotr (1483) | Lost 1-2 | -181489 |
| 3sealed | 884 | Nowicki, Maciej 0440 (1463) | Won 2-1 | +171506 |
| 4sealed | 662 | Christensen, Mike Juel (1481) | Won 2-1 | +181524 |
| 5sealed | 581 | Bialek, Szymon (1559) | Won 2-0 | +191543 |
| 6sealed | 316 | Paramonov, Alexey (1536) | Won 2-0 | +171560 |
| 7sealed | 359 | Floch, Ivan (2029) | Won 2-1 | +261586 |
| 8sealed | 106 | Kenyeres, Akos (1826) | Won 2-0 | +231609 |
| 9sealed | 102 | Fagiolo, Giordano (1812) | Won 2-0 | +211630 |
| 10draft | 229 | Ros, Stefan (1631) | Won 2-0 | +181648 |
| 11draft | 332 | Paice, Rheece (1589) | Won 2-1 | +171665 |
| 12draft | 366 | Vaudry, Maximilien (1636) | Won 2-0 | +181683 |
| 13draft | 252 | Chukhvichev, Anatoly (1950) | Lost 1-2 | -131670 |
| 14draft | 249 | Hagedorn, David (1720) | Won 2-1 | +181688 |
| 15draft | 207 | Pruijt, Daan (1997) | Lost 0-2 | -121676 |
| top | average opponent: 1691record: 11-4 | new rating: 1676 | ||
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1245 | Foster, Joe (1539) | Won 2-1 | +181537 |
| 2sealed | 1054 | Fletcher, Graeme (1541) | Won 2-0 | +181555 |
| 3sealed | 1053 | Koska, Adam (1797) | Lost 1-2 | -141541 |
| 4sealed | 1243 | Fischer, Daniel (1518) | Lost 1-2 | -181523 |
| top | average opponent: 1599record: 2-2 | new rating: 1523 | ||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 407 | Scharff, Aleksander (1500) | Won 2-0 | +181532 |
| 2standard | 137 | van Tongeren, Jos (1516) | Draw 1-1 | -11531 |
| 3standard | 301 | Dautel, Thomas (1467) | Lost 1-2 | -191512 |
| 4standard | 461 | Vornhusen, Gunnar (1565) | Won 1-0 | +191531 |
| 5standard | 321 | Star, Leon (1842) | Lost 0-2 | -121519 |
| top | average opponent: 1578record: 2-2-1 | new rating: 1519 | ||
| Grand Prix Milan 2014 (JOU limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 155 | Orset, Cato (1500) | Won 2-0 | +181534 |
| 2sealed | 66 | Tuomi, Sami (1945) | Lost 1-2 | -111523 |
| 3sealed | 417 | Toth, Jakub (1744) | Won 2-0 | +221545 |
| 4sealed | 319 | Schito, Francesco Maria (1581) | Lost 1-2 | -171528 |
| 5sealed | 307 | Wiggett, Gregory (1765) | Lost 1-2 | -141514 |
| top | average opponent: 1707record: 2-3 | new rating: 1514 | ||
| Grand Prix Antwerp 2013 (modern) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 334 | Cuvelier, Jeroen (1421) | Won 2-1 | +171519 |
| 3modern | 274 | Soderqvist, Joakim (1535) | Won 2-1 | +181537 |
| 4modern | 138 | Levy, Raphael (2039) | Won 2-1 | +271564 |
| 5modern | 98 | Stone, Dennis (1824) | Lost 0-2 | -141550 |
| 6modern | 195 | Sanchez, Patxi (1654) | Lost 0-2 | -161534 |
| 7modern | 157 | Knocinski, Przemek (1529) | Lost 0-2 | -181516 |
| top | average opponent: 1667record: 3-3 | new rating: 1516 | ||
| Grand Prix Rimini 2013 (M14 limited) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 231 | Mancino, Davide (1500) | Lost 1-2 | -181486 |
| 2sealed | 297 | Oliveira, Danilo (1482) | Won 2-0 | +181504 |
| 3sealed | 242 | Nicosia, Alvaro (1507) | Won 2-0 | +181522 |
| 4sealed | 320 | Strano, Sebastiano (1501) | Won 2-1 | +181540 |
| 5sealed | 206 | Battiston, Dario (1484) | Lost 1-2 | -191521 |
| 6sealed | 200 | Rohrer, Markus (1503) | Lost 0-2 | -191502 |
| top | average opponent: 1496record: 3-3 | new rating: 1502 | ||
| Grand Prix Strasbourg 2013 (legacy) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 35 | Hochstoger, Andre (1500) | Lost 0-2 | -171467 |
| 2legacy | 469 | Demol, Cedric (1487) | Lost 1-2 | -181449 |
| 3legacy | 514 | Boudin, Loic (1463) | Won 0-0 | +181467 |
| 4legacy | 483 | Van Aarst, Jerome (1481) | Won 2-1 | +181485 |
| 5legacy | 359 | Weise, Markus (1501) | Won 2-1 | +191504 |
| 6legacy | 353 | Berger, Maximilien (1619) | Won 2-0 | +201524 |
| 7legacy | 218 | Burgan, Julien (1441) | Lost 1-2 | -201504 |
| top | average opponent: 1499record: 4-3 | new rating: 1504 | ||
| Grand Prix Ghent 2012 (legacy) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 138 | Sneek, Erwin (1748) | Lost 1-2 | -141521 |
| 3legacy | 152 | Reling, Andreas (1499) | Lost 0-2 | -181503 |
| 4legacy | 260 | Tschernegg, Michael (1483) | Lost 1-2 | -191484 |
| top | average opponent: 1577record: 0-3 | new rating: 1484 | ||
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4legacy | 66 | Born, Sebastian (1598) | Won 2-1 | +201520 |
| 5legacy | 16 | Quintero Medina, Alberto (1520) | Won 2-0 | +181538 |
| 6legacy | 1 | Thor, Patrik (1715) | Lost 0-2 | -151523 |
| 7legacy | 44 | Desruelle, Jean-Marie (1462) | Lost 1-2 | -191504 |
| 8legacy | 80 | Haaksman, Gijsbert (1626) | Won 2-1 | +201524 |
| 9legacy | 86 | Van Nieuwenhove, Jan (1741) | Won 2-0 | +221546 |
| 10legacy | 879 | Brambilla, Davide (1735) | Lost 1-2 | -151531 |
| 11legacy | 894 | Piatkowski, Dominik (1650) | Won 2-0 | +211552 |
| 12legacy | 859 | Rimpila, Raine (1600) | Won 2-1 | +181570 |
| 13legacy | 833 | Goddik, Hans Jacob (1553) | Lost 0-2 | -181552 |
| 14legacy | 855 | Megias, Raul (1609) | Lost 0-0 | -171535 |
| top | average opponent: 1619record: 6-5 | new rating: 1535 | ||