Jacobsen Heiska, Ivan
Current rating: 1427
Record: 0-4
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 227 | Tanaka, Hayato (1500) | Lost 0-2 | -181482 |
| 2standard | 799 | Yamaguchi, Tomohiro (1466) | Lost 0-2 | -181464 |
| 3standard | 1169 | Sakamoto, Ryuutarou (1466) | Lost 0-2 | -181446 |
| 4standard | 1230 | Imura, Sei (1432) | Lost 0-2 | -191427 |
| average opponent: 1466record: 0-4 | new rating: 1427 | |||