Grottel, Jan
Current rating: 1606
Record: 20-15
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1076 | Lunde, Jacob (1500) | Lost 0-2 | -191533 |
| 2sealed | 1405 | der Kinderen, Carlo (1445) | Won 2-1 | +161549 |
| 3sealed | 1422 | Lanz, Sebastian (1487) | Won 2-0 | +171566 |
| 4sealed | 1286 | De Leeuw, Dennis (1528) | Won 2-0 | +181584 |
| 5sealed | 1102 | Sharpson, Eamonn (1554) | Lost 0-2 | -191565 |
| 6sealed | 1278 | Salzburg, Martin (1588) | Won 2-1 | +181583 |
| 7sealed | 1182 | Jacob, Philipp (1544) | Won 2-1 | +181601 |
| 8sealed | 1098 | Kawonczyk, Maciej (1733) | Lost 1-2 | -161585 |
| 9sealed | 1126 | Dietl, Christian (1760) | Won 2-1 | +211606 |
| top | average opponent: 1571record: 6-3 | new rating: 1606 | ||
| Grand Prix Antwerp 2013 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 436 | Zimmermann, Martin 8986 (1358) | Won 2-0 | +151497 |
| 2modern | 69 | Mangenot, Maxime (1654) | Won 2-1 | +211518 |
| 3modern | 124 | Tuomi, Sami (1878) | Lost 0-2 | -111507 |
| 4modern | 462 | Benschop, Martijn (1505) | Lost 0-2 | -181489 |
| 5modern | 553 | Coeckelbergh, Gert (1802) | Won 2-1 | +231512 |
| 6modern | 302 | Trauer, Pierre (1497) | Won 2-1 | +181530 |
| 7modern | 214 | Gaspard, Alexandre (1425) | Won 2-1 | +161546 |
| 8modern | 205 | Parker, Richard (1909) | Lost 0-2 | -121534 |
| 9modern | 217 | Buchholtz, Gregory (1520) | Won 2-0 | +181552 |
| top | average opponent: 1616record: 6-3 | new rating: 1552 | ||
| Grand Prix Copenhagen 2008 (EVE standard) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 117 | Zander, Bernhard (1579) | Won 2-0 | +191536 |
| 2standard | 2 | Puranen, Jari (1471) | Lost 0-2 | -191517 |
| 3standard | 180 | Virri, Esko (1588) | Lost 0-2 | -171500 |
| 4standard | 269 | Jorgensen, Anders Pete (1485) | Won 2-0 | +181518 |
| 5standard | 217 | Oksanen, Roope (1484) | Lost 1-2 | -191499 |
| 6standard | 230 | Panum, Thomas K (1482) | Lost 0-2 | -181481 |
| 7standard | 198 | Horak, Jakub (1465) | Won 2-0 | +181499 |
| 8standard | 152 | Kuva, Jukka (1565) | Lost 1-2 | -171482 |
| top | average opponent: 1515record: 3-5 | new rating: 1482 | ||
| Grand Prix Krakow 2007 (LRW standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 512 | Vesman, Veigo (1439) | Won 2-1 | +171517 |
| 2standard | 570 | Nouzovsky, Zdenko (1406) | Lost 0-2 | -201497 |
| 3standard | 615 | Naydenov, George (1528) | Lost 0-2 | -181479 |
| 4standard | 678 | Korsell, Samuel (1660) | Lost 1-2 | -141465 |
| 5standard | 677 | Majzner, Marcin (1464) | Lost 0-2 | -181447 |
| 6standard | 671 | Kobiela, Krzys (1440) | Won 2-0 | +181465 |
| 7standard | 644 | Pastucha, Martin (1361) | Won 2-0 | +161481 |
| 8standard | 624 | Szczepkowski, Michal (1483) | Won 2-0 | +181499 |
| 9standard | 600 | Gierszewski, Piotr (1500) | Won 2-0 | +181517 |
| top | average opponent: 1476record: 5-4 | new rating: 1517 | ||