Arita, Kazuhiro
Current rating: 1834 (#1448)
Record: 68-47-2
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1851 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 197 | Saito, Shogo (1521) | Won 2-0 | +121863 |
| 3standard | 204 | Umehara, Kei (1598) | Lost 1-2 | -221841 |
| 4standard | 268 | Higuchi, Akashi (1720) | Lost 1-2 | -211820 |
| 5standard | 667 | Furukawa, Jun (1451) | Won 2-1 | +121832 |
| 6standard | 532 | Awazu, Koichi (1517) | Won 2-0 | +121844 |
| 7standard | 243 | Akaike, Yo (1709) | Won 2-0 | +161860 |
| 8standard | 211 | Hariu, Daichi (1392) | Lost 1-2 | -261834 |
| top | average opponent: 1558record: 4-3 | new rating: 1834 | ||
| Grand Prix Bangkok 2019 (ELD limited) | starting rating: 1882 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 51 | Chan, Jeffrey Guo Ming (1920) | Lost 0-2 | -181864 |
| 3sealed | 270 | Goh, Gary [SGP] (1499) | Lost 1-2 | -241840 |
| 4sealed | 317 | Morishige, Yosuke (1439) | Won 2-0 | +111851 |
| top | average opponent: 1619record: 1-2 | new rating: 1851 | ||
| Grand Prix Taipei 2019 (WAR standard) | starting rating: 1820 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 202 | Tsai, Chi Ching (1518) | Won 2-1 | +131833 |
| 3standard | 115 | Lee, Min Han (1518) | Won 2-0 | +131846 |
| 4standard | 37 | Shiohata, Ryosuke (1550) | Won 2-1 | +121858 |
| 5standard | 12 | Wong, Man Lok (1776) | Won 2-0 | +171875 |
| 6standard | 33 | Lee, Chao-Yi (1600) | Lost 0-2 | -231852 |
| 7standard | 80 | Chang, Tao Liang (1506) | Won 2-1 | +121864 |
| 8standard | 31 | Wang, Xiao (1716) | Won 2-0 | +151879 |
| 9standard | 7 | Takahashi, Yuta (2100) | Lost 1-2 | -141865 |
| 10standard | 38 | Huang, Ren-Bin (1585) | Won 2-0 | +131878 |
| 11standard | 15 | Yada, Kazuki (1975) | Lost 0-2 | -161862 |
| 12standard | 65 | Liu, Zhengdong (1619) | Lost 1-2 | -221840 |
| 13standard | 54 | Nagao, Yasutaka (1812) | Won 2-0 | +171857 |
| 14standard | 50 | Hsieh, Wen Kai (1583) | Won 1-0 | +131870 |
| 15standard | 40 | Teng, Kaiyuan (1501) | Won 2-0 | +121882 |
| top | average opponent: 1668record: 10-4 | new rating: 1882 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1704 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 563 | Azuma, Kazuki (1500) | Won 2-1 | +141718 |
| 2standard | 285 | Fujiwara, Mizuki (1524) | Lost 1-2 | -221696 |
| 3standard | 530 | Fujimoto, Yamato (1499) | Won 2-0 | +151711 |
| 4standard | 563 | Ehara, Makoto (1482) | Won 2-1 | +141725 |
| 5standard | 422 | Kikuchi, Masanobu (1507) | Won 2-0 | +141739 |
| 6standard | 144 | Kazuya, Yokohama (1560) | Won 2-1 | +151754 |
| 7standard | 48 | Akimoto, Taiki (1532) | Won 2-1 | +141768 |
| 8standard | 38 | Fukui, Kouichirou (1516) | Won 2-0 | +131781 |
| 9standard | 40 | Takahashi, Ryo 8120 (1682) | Lost 1-2 | -201761 |
| 10standard | 91 | Kanbara, Hokuto (1595) | Won 2-0 | +151776 |
| 11standard | 81 | Maeba, Hideaki (1878) | Lost 1-2 | -161760 |
| 12standard | 66 | Ota, Sho (1615) | Won 2-0 | +161776 |
| 13standard | 77 | Kisanuki, Akira (1522) | Won 2-0 | +131789 |
| 14standard | 44 | Tajima, Ryoga (1681) | Won 2-1 | +161805 |
| 15standard | 27 | Mizuno, Yusuke (1658) | Won 2-0 | +151820 |
| top | average opponent: 1583record: 12-3 | new rating: 1820 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1591 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 340 | Satou, Wataru (1509) | Won 2-0 | +171608 |
| 2legacy | 224 | Shimazaki, Kazuma (1395) | Draw 1-1 | -41604 |
| 3legacy | 291 | Guo, Xiaoyu (1715) | Won 2-1 | +201624 |
| 4legacy | 150 | Hata, Yuta (1536) | Won 2-0 | +161640 |
| 5legacy | 77 | Kouyama, Ryu (1491) | Won 2-0 | +161656 |
| 6legacy | 39 | Ida, Yuuji (1562) | Won 2-1 | +161672 |
| 7legacy | 20 | Tanaka, Masaki (1526) | Won 2-0 | +151687 |
| 8legacy | 10 | Yoshizawa, Kohei (1580) | Lost 1-2 | -201667 |
| 9legacy | 37 | Kevin, Japutra (1602) | Lost 0-2 | -191648 |
| 10legacy | 81 | Dore, Maxime (1859) | Won 2-0 | +221670 |
| 11legacy | 53 | Houseki, Hisayuki (1609) | Draw 1-1 | -11669 |
| 12legacy | 73 | Kataoka, Tatsuya (1543) | Won 2-1 | +161685 |
| 13legacy | 52 | Fukui, Shunsuke (1784) | Won 2-1 | +191704 |
| 14legacy | 35 | Obregon Gonzalez, Diego (1632) | Lost 0-2 | -191685 |
| 15legacy | 50 | Miyamoto, Yohei (1716) | Won 2-0 | +191704 |
| top | average opponent: 1604record: 10-3-2 | new rating: 1704 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1419 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 180 | Saijo, Yuichi (1799) | Won 2-0 | +251444 |
| 4modern | 20 | Yamada, Yosuke (1588) | Won 2-1 | +211465 |
| 5modern | 95 | Shiba, Yoshimasa (1599) | Won 2-1 | +201485 |
| 6modern | 47 | Boku, Takashi (1686) | Lost 0-2 | -141471 |
| 7modern | 77 | Michibata, Tatsuya (1583) | Won 2-0 | +201491 |
| 8modern | 68 | Satou, Tsubasa (1759) | Won 2-1 | +231514 |
| 9modern | 71 | Ozaki, Naoto (1496) | Won 2-1 | +171531 |
| 10modern | 44 | Nakashima, Takumi (1644) | Won 2-1 | +201551 |
| 11modern | 21 | Hoshino, Masaaki (1779) | Won 2-1 | +221573 |
| 12modern | 11 | Yoshida, Shotaro (1596) | Won 2-0 | +191592 |
| 13modern | 8 | Okamura, Ryoma (1826) | Won 2-0 | +221614 |
| 14modern | 1 | Chiba, Akio (2110) | Lost 0-2 | -101604 |
| 15modern | 5 | Suzuike, Fumiyasu (1881) | Lost 0-2 | -131591 |
| top | average opponent: 1719record: 10-3 | new rating: 1591 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 256 | Kawakami, Yoshinobu (1530) | Lost 0-2 | -161433 |
| 3standard | 895 | Taya, Hironobu (1417) | Lost 0-2 | -181415 |
| 4standard | 1132 | Miyake, Hideyuki (1510) | Lost 1-2 | -171398 |
| 5standard | 1091 | Hirao, Takanori (1369) | Won 2-0 | +181416 |
| 6standard | 1099 | Shibata, Masataka (1500) | Won 2-0 | +191435 |
| 7standard | 696 | Yokomizo, Gouki (1525) | Lost 1-2 | -161419 |
| 8standard | 861 | Seko, Kazuki (1378) | Lost 1-2 | -191400 |
| 9standard | 801 | Kitagawa, Hiroyuki (1467) | Won 2-1 | +191419 |
| top | average opponent: 1462record: 3-5 | new rating: 1419 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1405 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 333 | Watanabe, Takefumi (1567) | Lost 0-2 | -151390 |
| 4legacy | 533 | Hirosawa, Yuki (1414) | Won 2-1 | +181408 |
| 5legacy | 332 | Komatsu, Yuuhei (1475) | Lost 1-2 | -171391 |
| 6legacy | 497 | Mori, Kazuaki (1475) | Won 2-0 | +201411 |
| 7legacy | 355 | Tomisawa, Hironobu (1497) | Won 2-0 | +191430 |
| 8legacy | 294 | Uchida, Wataru (1497) | Won 2-1 | +201450 |
| 9legacy | 141 | Mori, Yuki (1553) | Lost 0-2 | -171433 |
| 10legacy | 194 | Edmunds, James (1558) | Won 2-1 | +211454 |
| 11legacy | 204 | Kohira, Yoshitaka (1538) | Lost 0-2 | -171437 |
| 12legacy | 207 | Oyama, Takumi (1531) | Won 2-1 | +201457 |
| 13legacy | 183 | Hora, Takeru (1572) | Lost 0-2 | -161441 |
| 14legacy | 240 | Ozawa, Takeshi (1815) | Lost 1-2 | -111430 |
| 15legacy | 221 | Inukai, Kazuki (1536) | Won 2-0 | +191449 |
| top | average opponent: 1541record: 7-6 | new rating: 1449 | ||
| Grand Prix Taipei 2016 (SOI standard) | starting rating: 1406 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 19 | Wong, Wai Kin (1467) | Won 2-0 | +191425 |
| 3standard | 81 | Ueno, Tomoya (1486) | Won 2-1 | +191444 |
| 4standard | 60 | Rogers, Matthew (1921) | Lost 0-2 | -101434 |
| 5standard | 88 | Chung, Cang Sian (1541) | Lost 1-2 | -161418 |
| 6standard | 153 | Chen, Chien Hung (1519) | Won 2-1 | +201438 |
| 7standard | 136 | Yang, Shao-fu (1464) | Lost 0-2 | -181420 |
| 8standard | 166 | Li, Xiang (1545) | Lost 0-2 | -151405 |
| top | average opponent: 1563record: 3-4 | new rating: 1405 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 870 | Okuda, Kenshirou (1464) | Won 2-0 | +181470 |
| 2standard | 266 | Ishiwada, Hiroyuki (1729) | Lost 0-2 | -131457 |
| 3standard | 1129 | Hinai, Kohei (1500) | Lost 0-1 | -181439 |
| 4standard | 1471 | Takasawa, Kento (1551) | Lost 0-2 | -151424 |
| 5standard | 1325 | Koyanagi, Akio (1441) | Lost 0-2 | -181406 |
| top | average opponent: 1537record: 1-4 | new rating: 1406 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 123 | Maeda, Gaku (1429) | Won 2-0 | +171501 |
| 2standard | 150 | Iwasawa, Fumiya (1629) | Won 2-1 | +201521 |
| 3standard | 373 | Oikawa, Masafumi (1459) | Lost 0-2 | -191502 |
| 4standard | 700 | Muneta, Yasutoshi (1517) | Lost 1-2 | -181484 |
| 5standard | 720 | Ishida, Shoichi (1508) | Lost 0-2 | -171467 |
| 6standard | 828 | Hasegawa, Suguru (1651) | Lost 0-2 | -151452 |
| top | average opponent: 1532record: 2-4 | new rating: 1452 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 626 | Kuramoto, Yukihiro (1518) | Lost 0-2 | -171483 |
| 2legacy | 848 | Taniguchi, Kouhei (1474) | Won 2-0 | +181501 |
| 3legacy | 863 | Satake, Yuuta (1496) | Lost 1-2 | -181483 |
| 4legacy | 837 | Ootsuki, Yoshihiko (1422) | Won 2-0 | +161499 |
| 5legacy | 773 | Ueda, Daisuke (1618) | Lost 1-2 | -151484 |
| top | average opponent: 1505record: 2-3 | new rating: 1484 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 323 | Masuyama, Yuko (1231) | Won 2-0 | +131513 |
| 2sealed | 50 | Okamoto, Yuta (1464) | Won 2-0 | +171530 |
| 3sealed | 84 | Nakai, Sunao (1645) | Lost 0-2 | -161514 |
| 4sealed | 232 | Yamaguchi, Tomoyuki (1565) | Won 2-0 | +191533 |
| 5sealed | 124 | Nagahashi, Sadaaki (1599) | Lost 0-2 | -161517 |
| 6sealed | 225 | Takenaga, Tomohiro (1623) | Lost 1-2 | -171500 |
| top | average opponent: 1521record: 3-3 | new rating: 1500 | ||