| 31st U.S. Senior Open Championship - Round 4 International Leaderboard | |
| Updated 4:17 p.m. PDT | |
| * = Denotes 10th Tee Start; (a) = Denotes Amateur | |
| Pos | Player | Ctry | Total | Hole | Today | 1 | 2 | 3 | 4 | Total |
| 1 | LANGER, Bernhard | ![]() | -8 | F | -3 | 69 | 68 | 68 | 67 | 272 |
| T6 | SENIOR, Peter | ![]() | +2 | F | +1 | 73 | 70 | 68 | 71 | 282 |
| T8 | LU, Chien Soon | ![]() | +3 | F | +3 | 71 | 71 | 68 | 73 | 283 |
| T20 | OZAKI, Joe | ![]() | +8 | F | +3 | 69 | 73 | 73 | 73 | 288 |
| T28 | ROMERO, Eduardo | ![]() | +10 | F | +3 | 71 | 72 | 74 | 73 | 290 |
| T28 | SPITTLE, Rod | ![]() | +10 | F | E | 75 | 74 | 71 | 70 | 290 |
| T32 | RUTLEDGE, Jim | ![]() | +11 | F | +1 | 73 | 74 | 73 | 71 | 291 |
| T32 | WATANABE, Tsukasa | ![]() | +11 | F | -2 | 75 | 75 | 73 | 68 | 291 |
| T53 | WATSON, Denis | ![]() | +17 | F | +2 | 79 | 71 | 75 | 72 | 297 |
| 62 | FROST, David | ![]() | +20 | F | +10 | 76 | 72 | 72 | 80 | 300 |
| T63 | MARSH, Graham | ![]() | +21 | F | +3 | 74 | 76 | 78 | 73 | 301 |