Guo, Jia Sin
Current rating: 1274
Record: 6-21
| Grand Prix Yokohama 2019 (modern) | starting rating: 1345 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 700 | Kuno, Takashi (1543) | Lost 0-2 | -141331 |
| 2modern | 891 | Nakano, Kengo (1447) | Lost 0-2 | -161315 |
| 3modern | 1118 | Su, Yuwen (1462) | Lost 1-2 | -151300 |
| 4modern | 1143 | Hirano, Masayuki (1542) | Lost 1-2 | -141286 |
| 5modern | 1110 | Inaka, Shigeru (1436) | Won 2-0 | +211307 |
| 6modern | 943 | Sumihira, Toru (1366) | Lost 1-2 | -171290 |
| 7modern | 828 | Hagiwara, Ryo (1422) | Lost 0-2 | -161274 |
| top | average opponent: 1460record: 1-6 | new rating: 1274 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1372 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 317 | Furuya, Satoshi (1197) | Won 2-0 | +151387 |
| 2legacy | 21 | Iwasaki, Takuya (1498) | Lost 0-2 | -161371 |
| 3legacy | 323 | Gorohata, Yusuke (1441) | Won 2-1 | +191390 |
| 4legacy | 298 | Tsuchiya, Yoshihiro (1409) | Lost 1-2 | -171373 |
| 5legacy | 492 | Han, Yi (1567) | Lost 1-2 | -151358 |
| 6legacy | 454 | Prusa, Adam (1564) | Lost 0-2 | -141344 |
| 7legacy | 497 | Ishikawa, Hayate (1336) | Won 2-1 | +181362 |
| 8legacy | 363 | Kumagae, Kousuke (1443) | Lost 1-2 | -171345 |
| top | average opponent: 1432record: 3-5 | new rating: 1345 | ||
| Grand Prix Taipei 2016 (SOI standard) | starting rating: 1416 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 86 | Kihara, Akio (1423) | Lost 0-2 | -181398 |
| 2standard | 150 | Liu, Jiayang (1557) | Lost 0-2 | -151383 |
| 3standard | 330 | Chen, Tang Lin (1397) | Lost 0-2 | -181365 |
| 4standard | 349 | Weng, Li-Cheng (1567) | Won 2-1 | +221387 |
| 5standard | 333 | Yamauchi, Takahiro (1578) | Lost 1-2 | -151372 |
| top | average opponent: 1504record: 1-4 | new rating: 1372 | ||
| Grand Prix Singapore 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 75 | Pilapil, Michael Gene (1559) | Lost 1-2 | -171483 |
| 4modern | 177 | Wee Tiong, Ng (1517) | Lost 0-2 | -171466 |
| 5modern | 366 | [anonymous] | Lost 1-2 | -171449 |
| 6modern | 395 | Tanumihardja, Maximillian (1577) | Lost 1-2 | -161433 |
| 7modern | 368 | Bayrante, Albert (1496) | Won 2-0 | +191452 |
| 8modern | 290 | Yap, Jeffrey (1394) | Lost 1-2 | -191433 |
| 9modern | 282 | Khoo, Yew Sam (1469) | Lost 0-2 | -171416 |
| top | average opponent: 1506record: 1-6 | new rating: 1416 | ||