【Full Leaderboard】 Update 05/20 15:14
23rd Japan Senior Open Golf Championship 2013
| ROUND 1 | @：Amateur player |
| POS | Player | Score | Today | Hole | Rounds | Total | ||||
| R1 | R2 | R3 | R4 | |||||||
| 1 | Yoshinori Mizumaki | -6 | -6 | F | 66 | - | - | - | 66 | |
| Kiyoshi Murota | -6 | -6 | F | 66 | - | - | - | 66 | ||
| 3 | Hideki Kase | -4 | -4 | F | 68 | - | - | - | 68 | |
| Naomichi Ozaki | -4 | -4 | F | 68 | - | - | - | 68 | ||
| Barry Lane | -4 | -4 | F | 68 | - | - | - | 68 | ||
| 6 | Satoshi Higashi | -3 | -3 | F | 69 | - | - | - | 69 | |
| Tsukasa Watanabe | -3 | -3 | F | 69 | - | - | - | 69 | ||
| 8 | Tsutomu Higa | -2 | -2 | F | 70 | - | - | - | 70 | |
| 9 | Masahiro Takahashi | -1 | -1 | F | 71 | - | - | - | 71 | |
| Masahiro Kuramoto | -1 | -1 | F | 71 | - | - | - | 71 | ||
| Yutaka Hagawa | -1 | -1 | F | 71 | - | - | - | 71 | ||
| Taijiro Tanaka | -1 | -1 | F | 71 | - | - | - | 71 | ||
| Hiroshi Ueda | -1 | -1 | F | 71 | - | - | - | 71 | ||
| Katsunari Takahashi | -1 | -1 | F | 71 | - | - | - | 71 | ||
| Paul Wesselingh | -1 | -1 | F | 71 | - | - | - | 71 | ||
| Minoru Hatsumi | -1 | -1 | F | 71 | - | - | - | 71 | ||
| Yoshio Fumiyama | -1 | -1 | F | 71 | - | - | - | 71 | ||
| 18 | Hiroyuki Iwabuchi | ±0 | ±0 | F | 72 | - | - | - | 72 | |
| Boonchu Ruangkit | ±0 | ±0 | F | 72 | - | - | - | 72 | ||
| Shuichi Sano | ±0 | ±0 | F | 72 | - | - | - | 72 | ||
| Gregory Meyer | ±0 | ±0 | F | 72 | - | - | - | 72 | ||
| Kazushige Shida | ±0 | ±0 | F | 72 | - | - | - | 72 | ||
| Nobumasa Nakanishi | ±0 | ±0 | F | 72 | - | - | - | 72 | ||
| Takeshi Sakiyama | ±0 | ±0 | F | 72 | - | - | - | 72 | ||
| Hajime Meshiai | ±0 | ±0 | F | 72 | - | - | - | 72 | ||
| Noboru Fujiike | ±0 | ±0 | F | 72 | - | - | - | 72 | ||
| Ahmad Bateman | ±0 | ±0 | F | 72 | - | - | - | 72 | ||
| 28 | Anthony Gilligan | +1 | +1 | F | 73 | - | - | - | 73 | |
| Kazunari Itamoto | +1 | +1 | F | 73 | - | - | - | 73 | ||
| Masami Ito | +1 | +1 | F | 73 | - | - | - | 73 | ||
| Seiki Okuda | +1 | +1 | F | 73 | - | - | - | 73 | ||
| Ikuo Shirahama | +1 | +1 | F | 73 | - | - | - | 73 | ||
| Kazunari Matsunaga | +1 | +1 | F | 73 | - | - | - | 73 | ||
| Hitoshi Kato | +1 | +1 | F | 73 | - | - | - | 73 | ||
| Tadashige Kusano | +1 | +1 | F | 73 | - | - | - | 73 | ||
| Nobumitsu Yuhara | +1 | +1 | F | 73 | - | - | - | 73 | ||
| Setsuo Hamada | +1 | +1 | F | 73 | - | - | - | 73 | ||
| Hiroshi Makino | +1 | +1 | F | 73 | - | - | - | 73 | ||
| 39 | @ Minoru Sugiyama | +2 | +2 | F | 74 | - | - | - | 74 | |
| Jong-Duck Kim | +2 | +2 | F | 74 | - | - | - | 74 | ||
| Shinji Ikeuchi | +2 | +2 | F | 74 | - | - | - | 74 | ||
| Yoichi Shimizu | +2 | +2 | F | 74 | - | - | - | 74 | ||
| @ Kiyotaka Oie | +2 | +2 | F | 74 | - | - | - | 74 | ||
| Teruo Nakamura | +2 | +2 | F | 74 | - | - | - | 74 | ||
| Koichi Kamiya | +2 | +2 | F | 74 | - | - | - | 74 | ||
| Koji Sato | +2 | +2 | F | 74 | - | - | - | 74 | ||
| Toshihiko Matsuo | +2 | +2 | F | 74 | - | - | - | 74 | ||
| 48 | Satoshi Oide | +3 | +3 | F | 75 | - | - | - | 75 | |
| Teruyasu Hayashi | +3 | +3 | F | 75 | - | - | - | 75 | ||
| @ Toshio Nikawa | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Katsuyoshi Tomori | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Yoichi Sugawara | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Motomasa Aoki | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Takeshi Oyama | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Yoshinori Kobayashi | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Yoichi Sakata | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Kiyoshi Maita | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Nobuo Serizawa | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Seiji Ebihara | +3 | +3 | F | 75 | - | - | - | 75 | ||
| Takao Komizo | +3 | +3 | F | 75 | - | - | - | 75 | ||
| 61 | Toshiaki Kodama | +4 | +4 | F | 76 | - | - | - | 76 | |
| Mikio Ichikawa | +4 | +4 | F | 76 | - | - | - | 76 | ||
| Akihiro Ito | +4 | +4 | F | 76 | - | - | - | 76 | ||
| @ Masahiko Kida | +4 | +4 | F | 76 | - | - | - | 76 | ||
| @ Shinji Fukui | +4 | +4 | F | 76 | - | - | - | 76 | ||
| @ Satoshi Hato | +4 | +4 | F | 76 | - | - | - | 76 | ||
| @ Shingo Matsumoto | +4 | +4 | F | 76 | - | - | - | 76 | ||
| Dragon Taki | +4 | +4 | F | 76 | - | - | - | 76 | ||
| David Ishii | +4 | +4 | F | 76 | - | - | - | 76 | ||
| 70 | Katsuji Hasegawa | +5 | +5 | F | 77 | - | - | - | 77 | |
| @ Hajime Suzawa | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Yuji Takagi | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Toshikazu Fukuda | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Gerry Norquist | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Katsuhito Takagi | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Yoshinori Kaneko | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Toshio Shimamura | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Takashi Miyoshi | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Gohei Sato | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Shunro Watatani | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Mitsuyasu Kojima | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Yukihiro Hashitate | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Toshiaki Nakagawa | +5 | +5 | F | 77 | - | - | - | 77 | ||
| Isao Aoki | +5 | +5 | F | 77 | - | - | - | 77 | ||
| 85 | Norikazu Kawakami | +6 | +6 | F | 78 | - | - | - | 78 | |
| Koji Kobayashi | +6 | +6 | F | 78 | - | - | - | 78 | ||
| Yasuo Sone | +6 | +6 | F | 78 | - | - | - | 78 | ||
| Yasuhiro Okumura | +6 | +6 | F | 78 | - | - | - | 78 | ||
| Kosei Sakai | +6 | +6 | F | 78 | - | - | - | 78 | ||
| @ Woo Kang | +6 | +6 | F | 78 | - | - | - | 78 | ||
| Tim Thelen | +6 | +6 | F | 78 | - | - | - | 78 | ||
| @ Kanji Okunaka | +6 | +6 | F | 78 | - | - | - | 78 | ||
| Hideyuki Sato | +6 | +6 | F | 78 | - | - | - | 78 | ||
| Masatsugu Myojin | +6 | +6 | F | 78 | - | - | - | 78 | ||
| 95 | Koichi Suzuki | +7 | +7 | F | 79 | - | - | - | 79 | |
| Toshiomi Inaba | +7 | +7 | F | 79 | - | - | - | 79 | ||
| @ Hisashi Nakahigashi | +7 | +7 | F | 79 | - | - | - | 79 | ||
| Minoru Kato | +7 | +7 | F | 79 | - | - | - | 79 | ||
| 99 | Yoshiharu Ota | +8 | +8 | F | 80 | - | - | - | 80 | |
| Hiroshi Fujita | +8 | +8 | F | 80 | - | - | - | 80 | ||
| 101 | Atsushi Shizawa | +9 | +9 | F | 81 | - | - | - | 81 | |
| 102 | @ Toshiki Sakiyama | +10 | +10 | F | 82 | - | - | - | 82 | |
| 103 | Koichi Hirabayashi | +11 | +11 | F | 83 | - | - | - | 83 | |
| 104 | Michitaka Tanaami | +12 | +12 | F | 84 | - | - | - | 84 | |
| @ Junichi Chiba | +12 | +12 | F | 84 | - | - | - | 84 | ||
| 106 | @ Hiroto Mita | +13 | +13 | F | 85 | - | - | - | 85 | |
| 107 | Takahiro Kawase | +14 | +14 | F | 86 | - | - | - | 86 | |
| 108 | @ Kazushi Miyakawa | +16 | +16 | F | 88 | - | - | - | 88 | |
| WD | Kazuhiro Takami | |||||||||