【Full Leaderboard】 Update 09/20 15:42
30th Japan Senior Open Golf Championship 2020
| ROUND 3 | @：Amateur player |
| POS | Player | Score | Today | Hole | Rounds | Total | |||
| R1 | R2 | R3 | R4 | ||||||
| 1 | Akira Teranishi | -4 | +2 | F | 65 | 69 | 72 | - | 206 |
| 2 | Ryoken Kawagishi | -2 | -3 | F | 67 | 74 | 67 | - | 208 |
| Hiroo Okamo | -2 | -1 | F | 69 | 70 | 69 | - | 208 | |
| 4 | Norio Shinozaki | -1 | -2 | F | 74 | 67 | 68 | - | 209 |
| Toru Suzuki | -1 | -1 | F | 73 | 67 | 69 | - | 209 | |
| Hiroyuki Fujita | -1 | ±0 | F | 70 | 69 | 70 | - | 209 | |
| 7 | Mamo Osanai | ±0 | -1 | F | 70 | 71 | 69 | - | 210 |
| Shinichi Akiba | ±0 | ±0 | F | 68 | 72 | 70 | - | 210 | |
| 9 | Taichi Teshima | +1 | -1 | F | 69 | 73 | 69 | - | 211 |
| 10 | Taku Yamanaka | +3 | -2 | F | 69 | 76 | 68 | - | 213 |
| Norihiro Kumagai | +3 | +2 | F | 68 | 73 | 72 | - | 213 | |
| Keiichiro Fukabori | +3 | +3 | F | 73 | 67 | 73 | - | 213 | |
| 13 | Yoshinori Mizumaki | +4 | -2 | F | 70 | 76 | 68 | - | 214 |
| Masahiro Kuramoto | +4 | ±0 | F | 72 | 72 | 70 | - | 214 | |
| Toshimitsu Izawa | +4 | +1 | F | 70 | 73 | 71 | - | 214 | |
| Yoshinobu Tsukada | +4 | +3 | F | 71 | 70 | 73 | - | 214 | |
| Masayoshi Yamazoe | +4 | +3 | F | 72 | 69 | 73 | - | 214 | |
| 18 | Kazuhiro Takami | +5 | -2 | F | 71 | 76 | 68 | - | 215 |
| Seiki Okuda | +5 | -1 | F | 75 | 71 | 69 | - | 215 | |
| Takeshi Sakiyama | +5 | +1 | F | 71 | 73 | 71 | - | 215 | |
| Masayuki Kawamura | +5 | +1 | F | 73 | 71 | 71 | - | 215 | |
| Katsunari Takahashi | +5 | +1 | F | 71 | 73 | 71 | - | 215 | |
| Gregory Meyer | +5 | +2 | F | 72 | 71 | 72 | - | 215 | |
| Tsuyoshi Yoneyama | +5 | +3 | F | 72 | 70 | 73 | - | 215 | |
| 25 | Hidezumi Shirakata | +6 | +2 | F | 70 | 74 | 72 | - | 216 |
| 26 | Yutaka Hagawa | +7 | ±0 | F | 71 | 76 | 70 | - | 217 |
| Katsumi Kubo | +7 | ±0 | F | 75 | 72 | 70 | - | 217 | |
| Hisashi Sawada | +7 | ±0 | F | 76 | 71 | 70 | - | 217 | |
| Toru Taniguchi | +7 | +5 | F | 73 | 69 | 75 | - | 217 | |
| 30 | Hiroya Kamide | +8 | -1 | F | 74 | 75 | 69 | - | 218 |
| Masami Ito | +8 | +7 | F | 72 | 69 | 77 | - | 218 | |
| 32 | @ Masahiko Kida | +9 | ±0 | F | 76 | 73 | 70 | - | 219 |
| Masanori Kojima | +9 | +8 | F | 68 | 73 | 78 | - | 219 | |
| 34 | Norihito Fujii | +10 | ±0 | F | 79 | 71 | 70 | - | 220 |
| Kiyoshi Maita | +10 | +1 | F | 77 | 72 | 71 | - | 220 | |
| Mitsutaka Kusakabe | +10 | +2 | F | 73 | 75 | 72 | - | 220 | |
| Keiichi Tsuji | +10 | +3 | F | 75 | 72 | 73 | - | 220 | |
| Kiyoshi Murota | +10 | +3 | F | 74 | 73 | 73 | - | 220 | |
| Yoichi Shimizu | +10 | +7 | F | 73 | 70 | 77 | - | 220 | |
| Tsutomu Higa | +10 | +8 | F | 68 | 74 | 78 | - | 220 | |
| 41 | Yasuo Oshima | +11 | +3 | F | 77 | 71 | 73 | - | 221 |
| Hitoshi Kato | +11 | +5 | F | 73 | 73 | 75 | - | 221 | |
| 43 | Kazuhiro Fukunaga | +12 | +2 | F | 77 | 73 | 72 | - | 222 |
| Shinsuke Yanagisawa | +12 | +3 | F | 78 | 71 | 73 | - | 222 | |
| Hirokazu Hagiwara | +12 | +6 | F | 72 | 74 | 76 | - | 222 | |
| Kohki Idoki | +12 | +8 | F | 70 | 74 | 78 | - | 222 | |
| 47 | Mitsuhiro Tateyama | +13 | +4 | F | 70 | 79 | 74 | - | 223 |
| Takenori Hiraishi | +13 | +5 | F | 74 | 74 | 75 | - | 223 | |
| Yuji Igarashi | +13 | +10 | F | 71 | 72 | 80 | - | 223 | |
| 50 | Naoyuki Tamura | +14 | +4 | F | 78 | 72 | 74 | - | 224 |
| Eiji Mizoguchi | +14 | +4 | F | 79 | 71 | 74 | - | 224 | |
| Koji Kobayashi | +14 | +4 | F | 73 | 77 | 74 | - | 224 | |
| Masayoshi Nakayama | +14 | +5 | F | 78 | 71 | 75 | - | 224 | |
| Tsukasa Watanabe | +14 | +6 | F | 77 | 71 | 76 | - | 224 | |
| Katsunori Kuwabara | +14 | +6 | F | 72 | 76 | 76 | - | 224 | |
| 56 | Yasuaki Takashima | +15 | +6 | F | 74 | 75 | 76 | - | 225 |
| Toshikazu Sugihara | +15 | +7 | F | 74 | 74 | 77 | - | 225 | |
| 58 | Tetsuhiro Ogawa | +16 | +7 | F | 72 | 77 | 77 | - | 226 |
| Hideki Kase | +16 | +8 | F | 76 | 72 | 78 | - | 226 | |
| Ikuo Shirahama | +16 | +8 | F | 71 | 77 | 78 | - | 226 | |
| 61 | Noriyuki Tsuji | +17 | +7 | F | 76 | 74 | 77 | - | 227 |
| 62 | Tatsuaki Nakamura | +18 | +8 | F | 73 | 77 | 78 | - | 228 |
| Kyoji Hirota | +18 | +9 | F | 74 | 75 | 79 | - | 228 | |
| @ Mitsunori Kaneko | +18 | +9 | F | 74 | 75 | 79 | - | 228 | |
| 65 | Nobumasa Nakanishi | +19 | +9 | F | 75 | 75 | 79 | - | 229 |
| 66 | Hatsuo Nakane | +20 | +10 | F | 77 | 73 | 80 | - | 230 |
| 67 | Naomichi Ozaki | +22 | +12 | F | 76 | 74 | 82 | - | 232 |
| 68 | @ Shigeru Tsuburaya | +24 | +14 | F | 74 | 76 | 84 | - | 234 |