【Full Leaderboard】 Update 05/20 15:06
20th Japan Senior Open Golf Championship 2010
| ROUND 4 | @：Amateur player |
| POS | Player | Score | Rounds | Total | |||
| R1 | R2 | R3 | R4 | ||||
| - | Akimitsu Tokita | +16 | 80 | 76 | - | - | - |
| - | Noboru Kojima | +16 | 76 | 80 | - | - | - |
| - | Takeru Shibata | +16 | 76 | 80 | - | - | - |
| - | Toshio Ozaki | +16 | 82 | 74 | - | - | - |
| - | Kimpachi Yoshimura | +16 | 77 | 79 | - | - | - |
| - | Shinji Kuraoka | +17 | 77 | 80 | - | - | - |
| - | Hikaru Emoto | +17 | 78 | 79 | - | - | - |
| - | Marc Farry | +17 | 79 | 78 | - | - | - |
| - | @ Hajime Suzawa | +18 | 80 | 78 | - | - | - |
| - | @ Kimihiko Yamaguchi | +18 | 78 | 80 | - | - | - |
| - | @ Yoshiyuki Kanayama | +18 | 77 | 81 | - | - | - |
| - | Yuji Takagi | +18 | 80 | 78 | - | - | - |
| - | Tsunemi Nakajima | +18 | 77 | 81 | - | - | - |
| - | Takanori Sekura | +19 | 81 | 78 | - | - | - |
| - | Toshiaki Kodama | +19 | 80 | 79 | - | - | - |
| - | Keiji Teshima | +19 | 78 | 81 | - | - | - |
| - | @ Kazuo Ibata | +20 | 77 | 83 | - | - | - |
| - | @ Takamitsu Manabe | +20 | 80 | 80 | - | - | - |
| - | Hiromichi Takezaki | +20 | 79 | 81 | - | - | - |
| - | Motomasa Aoki | +20 | 80 | 80 | - | - | - |
| - | Tadao Furuichi | +20 | 79 | 81 | - | - | - |
| - | Shimon Takamatsu | +21 | 81 | 80 | - | - | - |
| - | Hisatsugu Mizutani | +22 | 80 | 82 | - | - | - |
| - | Masahiro Tokunaga | +22 | 76 | 86 | - | - | - |
| - | Hideto Shigenobu | +22 | 82 | 80 | - | - | - |
| - | Yasumichi Takei | +23 | 82 | 81 | - | - | - |
| - | Hung-Ta Chang | +23 | 83 | 80 | - | - | - |
| - | Kazushige Shida | +24 | 80 | 84 | - | - | - |
| - | @ Kyuzo Tomita | +24 | 80 | 84 | - | - | - |
| - | Kinya Aoyagi | +24 | 80 | 84 | - | - | - |
| - | @ Nobuaki Sakurai | +25 | 82 | 83 | - | - | - |
| - | Yoshiharu Ota | +25 | 84 | 81 | - | - | - |
| - | @ Ayumi Murono | +25 | 88 | 77 | - | - | - |
| - | @ Kimio Aoyama | +25 | 88 | 77 | - | - | - |
| - | Yoichi Wada | +26 | 89 | 77 | - | - | - |
| - | Takamichi Ichikawa | +27 | 84 | 83 | - | - | - |
| - | Hisashi Terada | +28 | 81 | 87 | - | - | - |
| - | @ Toru Nakatani | +28 | 83 | 85 | - | - | - |
| - | Toshizo Hashino | +29 | 87 | 82 | - | - | - |
| - | Akihiro Noguchi | +29 | 84 | 85 | - | - | - |
| - | Kazunari Itamoto | +30 | 85 | 85 | - | - | - |
| - | @ Koichi Takeda | +34 | 90 | 84 | - | - | - |
| - | Ichiro Teramoto | +34 | 83 | 91 | - | - | - |
| - | Yoshiki Yamasaki | +35 | 90 | 85 | - | - | - |