Jonas, Jeff
Current rating: 1259
Record: 32-60
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1291 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 399 | Urset, Antoine (1629) | Lost 0-2 | -121279 |
| 3pioneer | 686 | Rosa Serrat, Bernat (1627) | Lost 1-2 | -121267 |
| 4pioneer | 728 | Bazille, Claude-Alexis (1491) | Won 2-1 | +221289 |
| 5pioneer | 449 | Bezruchenko, Dmitryi (1429) | Lost 0-2 | -151274 |
| 6pioneer | 581 | Martin, Eric (1443) | Lost 0-2 | -151259 |
| top | average opponent: 1524record: 1-4 | new rating: 1259 | ||
| Grand Prix Barcelona 2019 (modern) | starting rating: 1289 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 58 | Meijberg, Abel (1742) | Lost 0-2 | -111278 |
| 3modern | 444 | Mendoza, Manuel (1433) | Won 2-0 | +211299 |
| 4modern | 223 | Gotfredsen, Anders (1716) | Lost 1-2 | -111288 |
| 5modern | 580 | Belmer, Yann (1771) | Won 2-1 | +271315 |
| 6modern | 262 | Trauer, Pierre (1861) | Lost 0-2 | -91306 |
| 7modern | 393 | Ganzevles, Peter (1501) | Lost 1-2 | -151291 |
| top | average opponent: 1671record: 2-4 | new rating: 1291 | ||
| Grand Prix Strasbourg 2019 (RNA limited) | starting rating: 1287 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 365 | Striegel, Manuel (1500) | Won 2-0 | +221309 |
| 2sealed | 91 | Chapron, Eric (1521) | Won 2-1 | +221331 |
| 3sealed | 262 | Brauer, Andreas (1535) | Lost 1-2 | -151316 |
| 4sealed | 500 | Martin, Wolfram (1552) | Lost 0-2 | -131303 |
| 5sealed | 569 | Schmid, Mattia (1534) | Lost 1-2 | -141289 |
| top | average opponent: 1528record: 2-3 | new rating: 1289 | ||
| Grand Prix Lille 2018 (GRN standard) | starting rating: 1325 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 352 | Judas, Gregoire (1500) | Lost 0-2 | -151310 |
| 2standard | 398 | Defrance, Nicolas (1479) | Won 2-1 | +211331 |
| 3standard | 497 | Ortmann, Christoph (1759) | Lost 1-2 | -111320 |
| 4standard | 515 | Lefebvre, Adrien (1404) | Lost 1-2 | -161304 |
| 5standard | 545 | Sagodira, Melodie (1365) | Lost 0-2 | -171287 |
| top | average opponent: 1501record: 1-4 | new rating: 1287 | ||
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1342 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 92 | Coremans, Jeffrey (1584) | Lost 0-2 | -141328 |
| 2standard | 252 | Havenne, Samuel (1483) | Won 2-1 | +211349 |
| 3standard | 420 | de Graaff, Claes (1676) | Lost 1-2 | -121337 |
| 4standard | 415 | Verzijl, Tom (1669) | Lost 0-2 | -121325 |
| top | average opponent: 1603record: 1-3 | new rating: 1325 | ||
| Grand Prix Lyon 2018 (modern) | starting rating: 1371 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 385 | Carvalho, Pedro [PRT] (1777) | Won 2-0 | +251396 |
| 3modern | 141 | De Canck, Sander (1452) | Won 2-1 | +191415 |
| 4modern | 112 | Van Kuijk, Harm-Joost (1646) | Lost 0-2 | -141401 |
| 5modern | 196 | Miller, Chris [NZL] (1664) | Lost 0-2 | -131388 |
| 6modern | 506 | Le Gall, Guillaume (1582) | Lost 0-2 | -151373 |
| 7modern | 586 | Boulanger, Julien (1497) | Lost 0-2 | -151358 |
| 8modern | 644 | Cantaluppi, Thibaut (1490) | Lost 0-2 | -161342 |
| top | average opponent: 1587record: 2-5 | new rating: 1342 | ||
| Grand Prix Metz 2017 (HOU limited) | starting rating: 1334 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 142 | Rehacek, Vit (1527) | Won 2-1 | +221356 |
| 3sealed | 130 | Henry, Boris (1448) | Won 2-0 | +191375 |
| 4sealed | 150 | Hugony, Francesco (1875) | Lost 0-2 | -91366 |
| 5sealed | 175 | Weissling, Christian (1604) | Won 2-1 | +221388 |
| 6sealed | 90 | Bastos, Frederico (1816) | Won 2-0 | +251413 |
| 7sealed | 81 | Lejeune, Olivier (1538) | Lost 0-2 | -151398 |
| 8sealed | 108 | Van Holsbeeck, Kristof (1682) | Lost 1-2 | -131385 |
| 9sealed | 257 | Fafalios, Pavlos (1628) | Lost 1-2 | -141371 |
| top | average opponent: 1640record: 4-4 | new rating: 1371 | ||
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1322 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 106 | Conde-Gonzalez, Francisco Antonio (1521) | Lost 1-2 | -151307 |
| 3standard | 484 | De Jong, Jeroen (1434) | Won 2-0 | +201327 |
| 4standard | 384 | Schultze, Max (1860) | Won 2-1 | +271354 |
| 5standard | 104 | Wiseman, Robert (1551) | Lost 0-2 | -141340 |
| 6standard | 202 | Hollmann, Carsten (1570) | Lost 1-2 | -141326 |
| 7standard | 344 | Fradl, Bernhard (1501) | Won 2-0 | +211347 |
| 8standard | 295 | Dijt, Sven (1635) | Lost 1-2 | -131334 |
| top | average opponent: 1582record: 3-4 | new rating: 1334 | ||
| Grand Prix Madrid 2016 (KLD standard) | starting rating: 1381 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 54 | Muniz, Alberto (1491) | Lost 1-2 | -161365 |
| 3standard | 442 | Lovegrove, Ismael (1690) | Lost 1-2 | -121353 |
| 4standard | 656 | Pearson, Zak (1454) | Lost 0-2 | -161337 |
| 5standard | 636 | Camilleri, Adrian (1499) | Lost 0-2 | -151322 |
| top | average opponent: 1534record: 0-4 | new rating: 1322 | ||
| Grand Prix Lille 2016 (modern) | starting rating: 1423 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 158 | Garcia-Rojo Pulgar, Joaquin (1558) | Won 2-0 | +211444 |
| 3modern | 122 | Pidutti, Paolo (1572) | Lost 1-2 | -161428 |
| 4modern | 514 | Sorensen, Jacob (1692) | Lost 1-2 | -131415 |
| 5modern | 577 | Beltran, David (1501) | Lost 0-2 | -171398 |
| 6modern | 643 | Cabos-Duhamel, Lilian (1442) | Lost 0-2 | -171381 |
| top | average opponent: 1553record: 1-4 | new rating: 1381 | ||
| Grand Prix Manchester 2016 (SOI standard) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 207 | Strachan, Scott (1463) | Won 2-1 | +181488 |
| 3standard | 42 | Orsini Jones, Matteo (1777) | Lost 1-2 | -131475 |
| 4standard | 547 | Nielsen, Jacob Norholm (1525) | Lost 1-2 | -171458 |
| 5standard | 433 | Walsh, Steven (1499) | Lost 1-2 | -181440 |
| 6standard | 539 | Kempf, Sebastian (1482) | Lost 1-2 | -171423 |
| top | average opponent: 1549record: 1-4 | new rating: 1423 | ||
| Grand Prix Barcelona 2016 (SOI limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 37 | Portabella, Luis Sebastian (1500) | Won 2-1 | +181502 |
| 2sealed | 63 | Castiello, Roberto (1496) | Lost 0-2 | -181484 |
| 3sealed | 696 | Alonso, Fernando (1452) | Lost 0-2 | -191465 |
| 4sealed | 902 | Tome, Jorge (1433) | Won 2-1 | +181483 |
| 5sealed | 756 | Pla, Sergio (1504) | Lost 1-2 | -181465 |
| 6sealed | 735 | Sauerborn, Moritz (1739) | Won 2-1 | +231488 |
| 7sealed | 549 | Monferran, Brian (1477) | Lost 0-2 | -181470 |
| top | average opponent: 1514record: 3-4 | new rating: 1470 | ||
| Grand Prix Bologna 2016 (modern) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 613 | Mattarei, Alberto (1497) | Won 2-0 | +191473 |
| 2modern | 225 | Michlits, Mario (1682) | Lost 1-2 | -151458 |
| 3modern | 850 | Alcaide, Arnau (1504) | Won 2-0 | +191477 |
| 4modern | 401 | Della Valle, Pietro (1436) | Lost 1-2 | -181459 |
| 5modern | 763 | Fink, Richard (1500) | Won 2-1 | +181477 |
| 6modern | 392 | Bonazza, Daniele (1525) | Won 2-1 | +191496 |
| 7modern | 298 | Celik, Ibrahim (1519) | Won 2-1 | +191515 |
| 8modern | 174 | Staciwa, Marcin (1763) | Lost 0-2 | -141501 |
| 9modern | 278 | Bragagia, Martino (1537) | Lost 0-2 | -171484 |
| top | average opponent: 1552record: 5-4 | new rating: 1484 | ||
| Grand Prix Lyon 2015 (BFZ limited) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 322 | Springer, Tibor (1470) | Won 2-1 | +181486 |
| 2sealed | 239 | Maier, Jordan (1702) | Lost 1-2 | -141472 |
| 3sealed | 664 | Gastard, Sebastien (1470) | Won 2-0 | +181490 |
| 4sealed | 532 | Brun, Nicolas (1518) | Lost 0-2 | -181472 |
| 5sealed | 514 | Vangdal, Ida (1464) | Lost 1-2 | -181454 |
| top | average opponent: 1525record: 2-3 | new rating: 1454 | ||
| Grand Prix Paris 2015 (DTK standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 27 | Turpin, Charles-Henri (1462) | Lost 0-2 | -181428 |
| 2standard | 446 | Scharff, Aleksander (1418) | Won 2-0 | +181446 |
| 3standard | 493 | Freour, Aurelien (1466) | Won 2-1 | +181464 |
| 4standard | 360 | Izotau, Anton (1469) | Lost 0-2 | -171447 |
| 5standard | 499 | Kley, Pascal (1494) | Lost 0-2 | -181429 |
| 6standard | 525 | Melchior, Diego (1501) | Won 2-1 | +201449 |
| 7standard | 342 | Stankiewicz, Julien (1498) | Won 2-0 | +191468 |
| top | average opponent: 1472record: 4-3 | new rating: 1468 | ||
| Grand Prix Strasbourg 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 60 | Saacke, Jonny (1500) | Lost 1-2 | -181482 |
| 2sealed | 249 | Billinger, Max (1482) | Lost 1-2 | -181464 |
| 3sealed | 462 | Becker, Simon (1465) | Lost 1-2 | -181446 |
| top | average opponent: 1482record: 0-3 | new rating: 1446 | ||