Sekiya, Haruki
Current rating: 1500
Record: 17-18
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 24 | Kawakami, Takehito (1883) | Won 2-0 | +251536 |
| 3pioneer | 219 | Nakamura, Kouki 3727 (1711) | Won 2-1 | +211557 |
| 4pioneer | 14 | Iwasaki, Koichi (1477) | Lost 1-2 | -191538 |
| 5pioneer | 360 | Nishida, Masashi (1557) | Won 2-0 | +181556 |
| 6pioneer | 157 | Oda, Kazuya (1554) | Lost 0-2 | -181538 |
| 7pioneer | 293 | Soyama, Tomohiro (1453) | Lost 0-2 | -201518 |
| 8pioneer | 321 | Aihara, Hiroki (1506) | Lost 0-2 | -181500 |
| top | average opponent: 1592record: 3-4 | new rating: 1500 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 43 | Satou, Marin (1615) | Won 2-1 | +201565 |
| 3sealed | 293 | Takeichi, Yugo (1483) | Lost 1-2 | -201545 |
| 4sealed | 446 | Onizuka, Hiroshi (1671) | Lost 1-2 | -151530 |
| 5sealed | 620 | Ishikawa, Ryosuke (1527) | Lost 1-2 | -191511 |
| top | average opponent: 1574record: 1-3 | new rating: 1511 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 600 | Narita, Nobushige (1483) | Lost 1-2 | -191492 |
| 2modern | 872 | Yamamoto, Takayoshi (1407) | Won 2-1 | +171509 |
| 3modern | 668 | Kurosaki, Ryo (1531) | Won 2-1 | +181527 |
| 4modern | 686 | Fukaya, Yuta (1522) | Won 2-1 | +181545 |
| 5modern | 383 | Ninohira, Yuuya (1435) | Won 2-1 | +161561 |
| 6modern | 263 | Sakurai, Issei (1510) | Won 2-1 | +171578 |
| 7modern | 101 | Hata, Hideaki (1691) | Lost 0-2 | -161562 |
| 8modern | 342 | Tsuzaki, Akira (1625) | Lost 0-2 | -171545 |
| top | average opponent: 1525record: 5-3 | new rating: 1545 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 680 | Okuhara, Azumi (1504) | Won 2-0 | +191487 |
| 2standard | 353 | Kojima, Toshihiro (1265) | Won 2-0 | +141501 |
| 3standard | 447 | Nanjo, Masashi (1815) | Won 2-1 | +241525 |
| 4standard | 284 | Nisio, Tomoyasu (1591) | Lost 1-2 | -171508 |
| 5standard | 560 | Sasaki, Tsutomu (1599) | Won 2-0 | +191527 |
| 6standard | 424 | Homma, Akira (1500) | Won 2-1 | +181545 |
| 7standard | 333 | Hirata, Tomoki (1560) | Lost 0-2 | -181527 |
| 8standard | 399 | Umeda, Takuya (1623) | Lost 1-2 | -161511 |
| top | average opponent: 1557record: 5-3 | new rating: 1511 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 64 | Itou, Ryouta (1307) | Won 2-0 | +151515 |
| 2sealed | 559 | Sugiyama, Wataru (1510) | Won 2-1 | +171532 |
| 3sealed | 270 | Takasugi, Tomoki (1462) | Won 2-1 | +171549 |
| 4sealed | 134 | Yoshida, Yuuji (1869) | Lost 0-2 | -121537 |
| 5sealed | 299 | Sashida, Tomoro (1549) | Lost 1-2 | -181519 |
| 6sealed | 567 | Sawai, Hiroshi (1516) | Lost 1-2 | -181501 |
| 7sealed | 552 | Tomioka, Shota (1562) | Lost 0-2 | -171484 |
| 8sealed | 598 | Oikawa, Ryusuke (1608) | Lost 1-2 | -161468 |
| top | average opponent: 1548record: 3-5 | new rating: 1468 | ||