Stam, Jeffrey
Current rating: 1333
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1397 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 300 | Baum, Tobias (1504) | Lost 1-2 | -161381 |
| 2standard | 392 | Berg, Jens (1484) | Draw 1-1 | +11382 |
| 3standard | 525 | Ayala, Dorian (1465) | Lost 1-2 | -161366 |
| 4standard | 573 | Van Der Heide, Stijn Wieger (1446) | Lost 0-2 | -171349 |
| 5standard | 572 | Eliasson, Tobias (1453) | Lost 0-2 | -161333 |
| top | average opponent: 1470record: 0-4-1 | new rating: 1333 | ||
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1131 | Martins, Daniel (1521) | Lost 0-2 | -161413 |
| 2sealed | 1447 | Stuchly, Petr (1506) | Lost 0-2 | -161397 |
| top | average opponent: 1513record: 0-2 | new rating: 1397 | ||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 264 | Zani, Gianluca (1543) | Lost 1-2 | -171483 |
| 2standard | 531 | Leijenhorst, Erwin (1480) | Lost 1-2 | -181465 |
| 3standard | 634 | Niemeyer, Johnny (1493) | Lost 0-2 | -181447 |
| 4standard | 693 | Estrada, Ivan (1445) | Lost 0-2 | -181429 |
| top | average opponent: 1490record: 0-4 | new rating: 1429 | ||