Kobayashi, Jumpei
Current rating: 1373
Record: 11-20-1
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1413 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 368 | Aoki, Masatugu (1504) | Lost 0-2 | -161397 |
| 3standard | 740 | Yoshizawa, Yutaka (1473) | Won 2-0 | +191416 |
| 4standard | 567 | Tamai, Yuno (1603) | Lost 1-2 | -141402 |
| 5standard | 723 | Yoshimura, Akira (1546) | Lost 0-2 | -161386 |
| 6standard | 832 | Nishiyama, Naoki (1542) | Lost 1-2 | -151371 |
| 7standard | 799 | Moriya, Taiki (1408) | Won 2-0 | +191390 |
| 8standard | 672 | Kimonji, Hiroki (1476) | Lost 1-2 | -171373 |
| top | average opponent: 1507record: 2-5 | new rating: 1373 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 428 | Watanabe, Yusuke 3633 (1519) | Lost 0-2 | -171400 |
| 3sealed | 725 | Li, Tingfei (1535) | Won 2-0 | +211421 |
| 4sealed | 765 | Hirabayashi, Kazuya (1704) | Lost 0-2 | -131408 |
| 5sealed | 777 | Komine, Syunsuke (1438) | Won 2-1 | +181426 |
| 6sealed | 511 | Masuyama, Takahiro (1486) | Lost 1-2 | -171409 |
| 7sealed | 620 | Tsuchiya, Ryuichi (1600) | Won 2-0 | +221431 |
| 8sealed | 478 | Kondo, Hirotsugu (1442) | Lost 1-2 | -181413 |
| top | average opponent: 1532record: 3-4 | new rating: 1413 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1416 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 181 | Komada, Shun (1610) | Won 2-1 | +211437 |
| 2sealed | 68 | Komoto, Ryosuke (1453) | Won 2-1 | +191456 |
| 3sealed | 153 | Cho, Won-Jun (1592) | Lost 0-2 | -161440 |
| 4sealed | 771 | Zhang, Zhiyang (1841) | Lost 0-2 | -111429 |
| 5sealed | 643 | Kanayama, Haruki (1506) | Lost 0-2 | -171412 |
| 6sealed | 844 | Yamasaki, Yuuta (1482) | Lost 0-2 | -161396 |
| 7sealed | 861 | Otsu, Shuhei (1444) | Lost 0-2 | -171379 |
| 8sealed | 798 | Kobayashi, Yuki9104 (1454) | Won 2-1 | +191398 |
| 9sealed | 643 | Sakai, Shigeto (1427) | Won 2-1 | +191417 |
| top | average opponent: 1534record: 4-5 | new rating: 1417 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 11 | Sato, Yoshihiro (1429) | Draw 1-1 | -11499 |
| 2standard | 606 | Konndou, Hiromi (1483) | Lost 0-2 | -191480 |
| 3standard | 1145 | Kobayashi, Masakatsu (1383) | Lost 0-2 | -191461 |
| 4standard | 1220 | Sarusawa, Yuichi (1413) | Lost 1-2 | -191442 |
| 5standard | 1234 | Oishi, Shoya (1375) | Lost 0-1 | -191423 |
| 6standard | 1177 | Nishimura, Yusuke (1290) | Won 2-0 | +151438 |
| 7standard | 1062 | Mizuno, Yuya (1351) | Won 2-0 | +171455 |
| 8standard | 910 | Tsujimoto, Shingo (1460) | Lost 0-2 | -181437 |
| 9standard | 828 | Tanaka, Tomonori (1281) | Lost 1-2 | -211416 |
| top | average opponent: 1385record: 2-6-1 | new rating: 1416 | ||