| U.S. Senior Open - Round 4 Best Rounds of the Day |
| Updated 9:22 p.m. EDT |
| * = Denotes 10th Tee Start; (a) = Denotes Amateur |
| Pos | Player | Ctry | Total | Hole | Today | 1 | 2 | 3 | 4 | Total |
| 4 | ROBERTS, Loren | ![]() | -11 | F | -8 | 68 | 71 | 74 | 64 | 277 |
| 1 | FUNK, Fred | ![]() | -20 | F | -7 | 68 | 67 | 68 | 65 | 268 |
| 10 | BROWNE, Olin | ![]() | -7 | F | -6 | 72 | 75 | 68 | 66 | 281 |
| 16 | MIZE, Larry | ![]() | -4 | F | -5 | 73 | 73 | 71 | 67 | 284 |
| 13 | BEAN, Andy | ![]() | -5 | F | -5 | 67 | 74 | 75 | 67 | 283 |
| 22 | OZAKI, Joe | ![]() | -2 | F | -4 | 71 | 71 | 76 | 68 | 286 |
| 22 | WOOSNAM, Ian | ![]() | -2 | F | -4 | 72 | 72 | 74 | 68 | 286 |
| 3 | COCHRAN, Russ | ![]() | -12 | F | -4 | 72 | 72 | 64 | 68 | 276 |
| 28 | MORGAN, Gil | ![]() | -1 | F | -3 | 75 | 69 | 74 | 69 | 287 |
| 28 | COURVILLE, Jerry | ![]() | -1 | F | -3 | 71 | 73 | 74 | 69 | 287 |
| 22 | LANGER, Bernhard | ![]() | -2 | F | -3 | 73 | 71 | 73 | 69 | 286 |
| 36 | ALLEM, Fulton | ![]() | +1 | F | -2 | 67 | 76 | 76 | 70 | 289 |
| 28 | EDWARDS, David | ![]() | -1 | F | -2 | 72 | 74 | 71 | 70 | 287 |
| 28 | JONES, Gene | ![]() | -1 | F | -2 | 72 | 75 | 70 | 70 | 287 |
| 19 | NORTON, Bryan | ![]() | -3 | F | -2 | 73 | 73 | 69 | 70 | 285 |
| 16 | SLUMAN, Jeff | ![]() | -4 | F | -2 | 69 | 74 | 71 | 70 | 284 |
| 8 | LEHMAN, Tom | ![]() | -8 | F | -2 | 68 | 70 | 72 | 70 | 280 |
| 2 | SINDELAR, Joey | ![]() | -14 | F | -2 | 66 | 68 | 70 | 70 | 274 |
| 55 | LIETZKE, Bruce | ![]() | +6 | F | -1 | 75 | 72 | 76 | 71 | 294 |
| 52 | WATSON, Denis | ![]() | +5 | F | -1 | 72 | 73 | 77 | 71 | 293 |
| 36 | MCNULTY, Mark | ![]() | +1 | F | -1 | 73 | 73 | 72 | 71 | 289 |
| 36 | STADLER, Craig | ![]() | +1 | F | -1 | 75 | 72 | 71 | 71 | 289 |
| 19 | COOK, John | ![]() | -3 | F | -1 | 73 | 69 | 72 | 71 | 285 |
| 8 | FREEMAN, Robin | ![]() | -8 | F | -1 | 70 | 68 | 71 | 71 | 280 |
| 6 | SIMPSON, Scott | ![]() | -9 | F | -1 | 68 | 72 | 68 | 71 | 279 |
| 60 | ATKINSON, Bert | ![]() | +9 | F | E | 72 | 75 | 78 | 72 | 297 |
| 58 | THOMAS, Steve | ![]() | +8 | F | E | 73 | 73 | 78 | 72 | 296 |
| 52 | WATANABE, Tsukasa | ![]() | +5 | F | E | 71 | 74 | 76 | 72 | 293 |
| 43 | WATSON, Tom | ![]() | +2 | F | E | 71 | 72 | 75 | 72 | 290 |
| 36 | REID, Mike | ![]() | +1 | F | E | 73 | 71 | 73 | 72 | 289 |
| 32 | BLACK, Ronnie | ![]() | E | F | E | 73 | 73 | 70 | 72 | 288 |
| 32 | JENKINS, Tom | ![]() | E | F | E | 73 | 73 | 70 | 72 | 288 |
| 19 | ROMERO, Eduardo | ![]() | -3 | F | E | 73 | 70 | 70 | 72 | 285 |
| 13 | HAAS, Jay | ![]() | -5 | F | E | 70 | 70 | 71 | 72 | 283 |
| 11 | BRYANT, Brad | ![]() | -6 | F | E | 68 | 71 | 71 | 72 | 282 |
| 6 | O'MEARA, Mark | ![]() | -9 | F | E | 70 | 69 | 68 | 72 | 279 |
| 52 | BECK, Chip | ![]() | +5 | F | +1 | 74 | 71 | 75 | 73 | 293 |
| 49 | SUTTON, Hal | ![]() | +4 | F | +1 | 73 | 74 | 72 | 73 | 292 |
| 47 | WADKINS, Bobby | ![]() | +3 | F | +1 | 71 | 75 | 72 | 73 | 291 |
| 43 | GILDER, Bob | ![]() | +2 | F | +1 | 71 | 71 | 75 | 73 | 290 |
| 32 | IRWIN, Hale | ![]() | E | F | +1 | 78 | 67 | 70 | 73 | 288 |
| 22 | TWAY, Bob | ![]() | -2 | F | +1 | 70 | 69 | 74 | 73 | 286 |
| 22 | WIEBE, Mark | ![]() | -2 | F | +1 | 70 | 71 | 72 | 73 | 286 |
| 4 | NORMAN, Greg | ![]() | -11 | F | +1 | 66 | 70 | 68 | 73 | 277 |
| 49 | FLEISHER, Bruce | ![]() | +4 | F | +2 | 74 | 73 | 71 | 74 | 292 |
| 47 | POOLEY, Don | ![]() | +3 | F | +2 | 71 | 71 | 75 | 74 | 291 |
| 36 | GOODES, Mike | ![]() | +1 | F | +2 | 70 | 70 | 75 | 74 | 289 |
| 36 | EAKS, R W | ![]() | +1 | F | +2 | 72 | 69 | 74 | 74 | 289 |
| 32 | THORPE, Jim | ![]() | E | F | +2 | 71 | 69 | 74 | 74 | 288 |
| 22 | HASKINS, Steve | ![]() | -2 | F | +2 | 73 | 70 | 69 | 74 | 286 |
| 58 | WOODWARD, Jim | ![]() | +8 | F | +3 | 75 | 72 | 74 | 75 | 296 |
| 56 | QUIGLEY, Dana | ![]() | +7 | F | +3 | 71 | 75 | 74 | 75 | 295 |
| 49 | ROSS, John | ![]() | +4 | F | +3 | 74 | 70 | 73 | 75 | 292 |
| 43 | EGER, David | ![]() | +2 | F | +3 | 71 | 70 | 74 | 75 | 290 |
| 36 | SIMPSON, Tim | ![]() | +1 | F | +3 | 70 | 72 | 72 | 75 | 289 |
| 16 | VAUGHAN, Bruce | ![]() | -4 | F | +3 | 68 | 70 | 71 | 75 | 284 |
| 13 | FORSMAN, Dan | ![]() | -5 | F | +3 | 66 | 71 | 71 | 75 | 283 |
| 43 | FERGUS, Keith | ![]() | +2 | F | +4 | 73 | 72 | 69 | 76 | 290 |
| 11 | JACKSON, Tim | ![]() | -6 | F | +4 | 66 | 67 | 73 | 76 | 282 |
| 56 | HARRIS, John | ![]() | +7 | F | +5 | 68 | 75 | 75 | 77 | 295 |
| 62 | MARION, Kevin | ![]() | +22 | F | +6 | 75 | 72 | 85 | 78 | 310 |
| 61 | BANISTER, Graham | ![]() | +13 | F | +9 | 72 | 75 | 73 | 81 | 301 |