Arakaki, Gen
Current rating: 1448
Record: 27-32-1
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1412 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 214 | Soga, Junya (1787) | Lost 0-2 | -121400 |
| 2standard | 490 | Horiguchi, Naoya (1482) | Won 2-1 | +201420 |
| 3standard | 598 | Lan, Chia Yu (1446) | Won 2-1 | +181438 |
| 4standard | 531 | Taguchi, Yuuma (1518) | Lost 0-2 | -161422 |
| 5standard | 501 | Oonishi, Tomokazu (1466) | Won 2-1 | +191441 |
| 6standard | 457 | Kobayashi, Tetsuro (1726) | Won 2-1 | +231464 |
| 7standard | 309 | Tsuruoka, Shouta (1574) | Lost 1-2 | -161448 |
| top | average opponent: 1571record: 4-3 | new rating: 1448 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 183 | Kowata, Kyohei (1496) | Lost 1-2 | -181428 |
| 2sealed | 671 | Kobayashi, Junya (1471) | Won 2-0 | +191447 |
| 3sealed | 736 | Nishihara, Masataka (1430) | Lost 0-2 | -181429 |
| 4sealed | 897 | Zhu, Mingyang (1473) | Lost 0-2 | -171412 |
| top | average opponent: 1468record: 1-3 | new rating: 1412 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 368 | Ito, Kenta (1455) | Won 2-1 | +181462 |
| 2modern | 113 | Kasahara, Yusuke (1515) | Won 2-0 | +191481 |
| 3modern | 367 | Takao, Syunya (1581) | Lost 1-2 | -161465 |
| 4modern | 595 | Ito, Ryoya (1523) | Lost 1-2 | -171448 |
| 5modern | 930 | Kounosu, Hiroaki (1089) | Won 2-1 | +111459 |
| 6modern | 386 | Ohkawa, Yusuke (1568) | Lost 0-2 | -161443 |
| 7modern | 696 | Wang, Kunrui (1561) | Lost 1-2 | -161427 |
| 8modern | 651 | Koyama, Noriki (1432) | Won 2-0 | +191446 |
| top | average opponent: 1466record: 4-4 | new rating: 1446 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1418 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 418 | Martin-McEwen, Leroy (1658) | Lost 1-2 | -141404 |
| 2standard | 700 | Takekiyo, Koji (1283) | Lost 1-2 | -201384 |
| 3standard | 1047 | Sakamoto, Satoshi (1601) | Draw 1-1 | +41388 |
| 4standard | 1038 | Osuga, Hiroaki (1202) | Won 2-0 | +141402 |
| 5standard | 913 | Yanagawa, Tomohiro (1487) | Won 2-0 | +201422 |
| 6standard | 758 | Tanaka, Jun'ichi (1502) | Lost 0-2 | -171405 |
| 7standard | 745 | Hoshi, Masaru (1451) | Won 2-0 | +191424 |
| 8standard | 623 | Sumii, Hiroyuki (1498) | Won 2-1 | +201444 |
| top | average opponent: 1460record: 4-3-1 | new rating: 1444 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 111 | Hurukawa, Yuta (1434) | Lost 0-2 | -181451 |
| 2legacy | 480 | Tsuchiya, Hiroki (1775) | Lost 1-2 | -131438 |
| 3legacy | 631 | Ito, Ryo (1290) | Lost 0-2 | -201418 |
| top | average opponent: 1500record: 0-3 | new rating: 1418 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 470 | Kageyama, Koki (1661) | Lost 0-2 | -161513 |
| 2standard | 916 | Demura, Mitsuhiro (1422) | Won 2-1 | +161529 |
| 3standard | 762 | Goto, Kosuke (1454) | Won 2-0 | +171546 |
| 4standard | 547 | Kanda, Takuya (1519) | Lost 1-2 | -181528 |
| 5standard | 1028 | Date, Tsutomu (1420) | Lost 1-2 | -201508 |
| 6standard | 1047 | Kusakawa, Naoto (1424) | Lost 1-2 | -201488 |
| 7standard | 985 | Hanada, Keisuke (1474) | Lost 0-2 | -181470 |
| 8standard | 924 | Watanabe, Kenta (1414) | Won 2-1 | +171487 |
| 9standard | 766 | Suga, Hiroki (1517) | Lost 1-2 | -181469 |
| top | average opponent: 1478record: 3-6 | new rating: 1469 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 384 | Suzuki, Takayuki (1608) | Lost 1-2 | -161446 |
| 2legacy | 849 | Ooguro, Yuuhei (1480) | Won 2-0 | +191465 |
| 3legacy | 615 | Oohara, Seiya (1501) | Won 2-0 | +191484 |
| 4legacy | 664 | Mori, Takahiro (1477) | Won 2-1 | +181502 |
| 5legacy | 240 | Ohkubo, Yuki (1526) | Lost 0-2 | -181484 |
| 6legacy | 640 | Soejima, Yuichi (1475) | Won 2-1 | +181502 |
| 7legacy | 400 | Uesaka, Kenta (1540) | Won 2-1 | +191521 |
| 8legacy | 331 | Ikegami, Kiwamu (1554) | Won 2-0 | +181539 |
| 9legacy | 153 | Okai, Toshiki (1721) | Lost 1-2 | -151524 |
| 10legacy | 192 | Suganuma, Takayuki (1645) | Won 2-1 | +211545 |
| 11legacy | 223 | Murakami, Toki (1641) | Lost 0-2 | -171528 |
| 12legacy | 255 | Ito, Takayuki (1463) | Lost 1-2 | -191509 |
| 13legacy | 274 | Murakami, Ryota (1532) | Won 2-1 | +191528 |
| 14legacy | 246 | Andou, Masahito (1579) | Lost 0-2 | -171511 |
| 15legacy | 242 | Yarita, Yoshiaki (1518) | Won 2-0 | +181529 |
| top | average opponent: 1551record: 9-6 | new rating: 1529 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 917 | Kumazawa, Yuki (1500) | Lost 0-2 | -181482 |
| 2standard | 1284 | Nakamura, Yuuta4577 (1467) | Won 2-1 | +181500 |
| 3standard | 1209 | Ishimoto, Yuki (1527) | Lost 1-2 | -181482 |
| 4standard | 1223 | Mishiro, Norihito (1463) | Lost 0-2 | -181464 |
| 5standard | 1515 | Akabane, Shu (1348) | Won 2-1 | +161480 |
| 6standard | 1274 | Takayama, Kiichiro (1479) | Lost 0-2 | -181462 |
| top | average opponent: 1464record: 2-4 | new rating: 1462 | ||