Diefenbach, Claus
Current rating: 1549
Record: 45-42-3
| Grand Prix Utrecht 2019 (ELD limited) | starting rating: 1627 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 504 | Zhang, Ian (1478) | Lost 1-2 | -201607 |
| 3sealed | 439 | Skrzypczak, Michal (1471) | Lost 1-2 | -211586 |
| 4sealed | 548 | Weeda, Chris (1564) | Lost 0-2 | -181568 |
| 5sealed | 575 | Lhoste, Nicolas (1531) | Lost 0-2 | -191549 |
| top | average opponent: 1511record: 0-4 | new rating: 1549 | ||
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1613 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 67 | Ciszek, Adrian (1528) | Lost 1-2 | -201593 |
| 4sealed | 191 | Winter, Alex [ENG] (1660) | Won 2-0 | +191612 |
| 5sealed | 177 | Wlodarczyk, Andrzej (1458) | Lost 1-2 | -201592 |
| 6sealed | 229 | Konopko, Lukasz (1520) | Won 2-0 | +161608 |
| 7sealed | 291 | Dushinin, Evgenii (1745) | Draw 1-1 | +31611 |
| 8sealed | 331 | Carraro, Francesco (1526) | Won 2-1 | +161627 |
| top | average opponent: 1573record: 3-2-1 | new rating: 1627 | ||
| Grand Prix London 2019 (WAR sealed) | starting rating: 1644 | |||
| round | table | opponent (rating) | result | Δrating |
| A1sealed | 52 | Michel, Gregory (1971) | Lost 1-2 | -121632 |
| A2sealed | 210 | Mackey, Jay (1564) | Won 2-0 | +171649 |
| A3sealed | 81 | Evans, Matthew [ENG] (1508) | Lost 0-2 | -211628 |
| C1sealed | 332 | Feyand, Florian (1768) | Lost 1-2 | -151613 |
| top | average opponent: 1703record: 1-3 | new rating: 1613 | ||
| Grand Prix Strasbourg 2019 (RNA limited) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 8 | Westphal, Nicolai (1672) | Lost 1-2 | -171591 |
| 2sealed | 491 | Sagorski, Bjorn (1482) | Won 2-0 | +161607 |
| 3sealed | 559 | Verhulsdonk, Jan (1398) | Won 2-0 | +151622 |
| 4sealed | 425 | Mackinga, Torgin (1523) | Won 2-1 | +161638 |
| 5sealed | 292 | Wintermantel, Thomas (1489) | Won 2-1 | +151653 |
| 6sealed | 217 | Joachim, David (1870) | Lost 0-2 | -141639 |
| 7sealed | 289 | Salvador Arnal, Guillem (1864) | Won 2-1 | +221661 |
| 8sealed | 164 | Ros, Stefan (1724) | Lost 0-2 | -171644 |
| top | average opponent: 1628record: 5-3 | new rating: 1644 | ||
| Grand Prix Stockholm 2018 (modern) | starting rating: 1622 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 164 | Andersson Ceder, Jonatan (1500) | Won 2-1 | +161638 |
| 2modern | 229 | Hakala, Juha (1518) | Won 2-0 | +161654 |
| 3modern | 137 | Munklinde, Markus (1743) | Lost 0-2 | -171637 |
| 4modern | 382 | Granberg, Nils (1518) | Won 2-1 | +161653 |
| 5modern | 117 | Lindholm, Andreas (1541) | Lost 1-2 | -201633 |
| 6modern | 345 | Jedlinski, Mateusz (1517) | Lost 0-2 | -201613 |
| 7modern | 369 | Huhtala, Janne (1506) | Won 2-0 | +161629 |
| 8modern | 238 | Hong, Sung-Il (1468) | Lost 1-2 | -211608 |
| top | average opponent: 1539record: 4-4 | new rating: 1608 | ||
| Grand Prix Turin 2018 (M19 limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 250 | Barnini, Lorenzo (1750) | Won 2-0 | +231530 |
| 2sealed | 161 | Bergonzoni, Luca (1743) | Won 2-0 | +221552 |
| 3sealed | 3 | Angelopoulos, Marios (1735) | Won 2-0 | +211573 |
| 4sealed | 106 | Safai, Soheil (1560) | Won 2-1 | +181591 |
| 5sealed | 67 | Hoel, Mads (1519) | Won 2-0 | +161607 |
| 6sealed | 5 | Brancewicz, Michal (1657) | Lost 1-2 | -171590 |
| 7sealed | 60 | van Leeuwen, Arjan (1749) | Won 2-0 | +211611 |
| 8sealed | 43 | Cibak, Andrea (1865) | Lost 1-2 | -131598 |
| 9sealed | 68 | Lippi, Alessandro (1777) | Won 2-1 | +211619 |
| 10draft | 54 | Corsi, Simone (1641) | Lost 0-2 | -181601 |
| 11draft | 34 | Raab, Tobias (1587) | Lost 0-2 | -181583 |
| 12draft | 69 | Dorigo, Andrea (1572) | Won 2-0 | +181601 |
| 13draft | 14 | Ciotta, Andrea (1778) | Won 2-0 | +211622 |
| 14draft | 14 | Raab, Tobias (1609) | Lost 0-2 | -181604 |
| 15draft | 14 | Della Valle, Pietro (1627) | Won 2-1 | +181622 |
| top | average opponent: 1678record: 10-5 | new rating: 1622 | ||
| Grand Prix Lyon 2018 (modern) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 185 | Ury, Geoffrey (1500) | Won 2-1 | +171537 |
| 2modern | 446 | Zaznoba, Eugene (1643) | Lost 0-2 | -161521 |
| 3modern | 740 | Egli, Markus (1498) | Won 2-1 | +181539 |
| 4modern | 312 | Locoge, David (1560) | Won 2-0 | +181557 |
| 5modern | 350 | Van Uffelen, Bart (1474) | Lost 0-2 | -191538 |
| 6modern | 511 | Domingues, Anthony Virgilio (1554) | Won 2-0 | +181556 |
| 7modern | 433 | Bellanger, Guillaume (1536) | Won 2-0 | +181574 |
| 8modern | 239 | Honerbach, Nicolas (1547) | Won 2-1 | +171591 |
| 9modern | 93 | Galicia, Alberto (1792) | Lost 0-2 | -141577 |
| 10modern | 164 | Reitenauer, Adrian (1571) | Lost 1-2 | -181559 |
| 11modern | 187 | Gregoir, Christophe (1772) | Lost 1-2 | -151544 |
| 12modern | 184 | Borrelli, Jacopo (1570) | Lost 1-2 | -171527 |
| 13modern | 175 | Nouaillac, Florian (1480) | Lost 1-2 | -191508 |
| 14modern | 167 | Innerlohinger, Florian (1460) | Lost 0-2 | -191489 |
| 15modern | 157 | Tetzlaff, Nico (1503) | Won 2-1 | +181507 |
| top | average opponent: 1564record: 7-8 | new rating: 1507 | ||
| Grand Prix Liverpool 2017 (XLN limited) | starting rating: 1582 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 243 | Lazarevas, Lukas (1506) | Lost 0-2 | -191563 |
| 2sealed | 412 | Bird, Daniel (1467) | Lost 0-2 | -201543 |
| 3sealed | 568 | Ireland, Glen (1410) | Won 2-1 | +151558 |
| 4sealed | 527 | Forrester, Martin (1486) | Lost 1-2 | -191539 |
| 5sealed | 470 | Stella, Ugo (1459) | Lost 0-2 | -191520 |
| top | average opponent: 1465record: 1-4 | new rating: 1520 | ||
| Grand Prix Metz 2017 (HOU limited) | starting rating: 1569 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 384 | Gerald, Rundwasser (1500) | Draw 1-1 | -11568 |
| 2sealed | 343 | Endle, Heiko (1445) | Won 2-1 | +161584 |
| 3sealed | 340 | Kovalski, Nicolas (1514) | Won 2-0 | +171601 |
| 4sealed | 180 | Mudde, Quinten (1609) | Won 2-0 | +181619 |
| 5sealed | 88 | Graf, Michael (1601) | Lost 1-2 | -191600 |
| 6sealed | 211 | Rossire, Patrick (1670) | Won 2-0 | +201620 |
| 7sealed | 130 | Fourmas, Romain (1585) | Lost 0-2 | -191601 |
| 8sealed | 225 | Hilbert, Daniel (1541) | Lost 1-2 | -191582 |
| top | average opponent: 1558record: 4-3-1 | new rating: 1582 | ||
| Grand Prix London 2016 (KLD limited) | starting rating: 1575 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 459 | Maggs, Theo (1427) | Lost 1-2 | -201555 |
| 2sealed | 636 | Birt, Matty (1369) | Won 2-1 | +141569 |
| 3sealed | 742 | Pickles, Steven (1361) | Won 2-0 | +151584 |
| 4sealed | 352 | Perl, Jakob (1508) | Won 2-1 | +161600 |
| 5sealed | 383 | Greenwood, David (1781) | Lost 0-2 | -141586 |
| 6sealed | 427 | Gabaldon Navarro, Carlos (1600) | Won 2-1 | +181604 |
| 7sealed | 499 | Taylor, Nicholas (1619) | Lost 1-2 | -181586 |
| 8sealed | 562 | Quintana Ballines, Gaspar Aziz (1654) | Lost 0-2 | -171569 |
| top | average opponent: 1540record: 4-4 | new rating: 1569 | ||
| Grand Prix Vienna 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 32 | Deleuran Poulsen, Emil (1500) | Won 2-0 | +181518 |
| 2sealed | 50 | Ballanger, Stuart (1509) | Won 2-1 | +181536 |
| 3sealed | 222 | Dreske, Jan (1523) | Won 2-1 | +181554 |
| 4sealed | 75 | Bruni, Matteo (1659) | Won 2-0 | +201574 |
| 5sealed | 40 | Toth, Jakub (1729) | Lost 0-2 | -161558 |
| 6sealed | 140 | Mendonca, Kenneth (1565) | Won 2-1 | +181576 |
| 7sealed | 169 | Gorokhovskyy, Kostyantyn (1605) | Won 2-0 | +191595 |
| 8sealed | 56 | Preusche, Florian (1581) | Draw 1-1 | 01595 |
| 9sealed | 36 | Abraham, Daniel (1523) | Lost 0-2 | -201575 |
| top | average opponent: 1577record: 6-2-1 | new rating: 1575 | ||