| 31st U.S. Senior Open Championship - Player Scorecard | |
| Updated 4:17 p.m. PDT | |
| * = Denotes 10th Tee Start; (a) = Denotes Amateur | |
| John Cook | ![]() |
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| Hole | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Out | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | In | Total |
| Yards | 403 | 508 | 415 | 392 | 190 | 480 | 420 | 443 | 205 | 3456 | 400 | 545 | 455 | 170 | 370 | 413 | 375 | 212 | 470 | 3410 | 6866 |
| Par | 4 | 5 | 4 | 4 | 3 | 4 | 4 | 4 | 3 | 35 | 4 | 5 | 4 | 3 | 4 | 4 | 4 | 3 | 4 | 35 | 70 |
| Round 1 | 4 | 4 | 4 | 4 | 2 | 5 | 4 | 5 | 3 | 35 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 36 | 71 |
| Round 2 | 4 | 4 | 3 | 3 | 3 | 4 | 5 | 3 | 4 | 33 | 4 | 5 | 4 | 3 | 4 | 4 | 3 | 3 | 5 | 35 | 68 |
| Round 3 | 3 | 4 | 4 | 4 | 3 | 4 | 4 | 5 | 4 | 35 | 4 | 4 | 5 | 3 | 5 | 4 | 4 | 3 | 5 | 37 | 72 |
| Round 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 35 | 4 | 4 | 4 | 3 | 4 | 4 | 3 | 2 | 4 | 32 | 67 |
| -- Statistical Summary -- | |||||
| Round 1 | Round 2 | Round 3 | Round 4 | Overall | |
| Score | +1 71 | -2 68 | +2 72 | -3 67 | -2 278 |
| Average Drive | 225.5 | 286.5 | 282.5 | 272.0 | 266.6 |
| Fairways Hit Percentage | 8/14 57% | 9/14 64% | 9/14 64% | 6/14 43% | 32/56 57% |
| Greens in Regulation Percentage | 10/18 56% | 14/18 78% | 12/18 67% | 13/18 72% | 49/72 68% |
| Putts Per Round Putts Per Hole | 29/18 1.61 | 29/18 1.61 | 31/18 1.72 | 29/18 1.61 | 118/72 1.64 |
| Eagles | 0 | 0 | 0 | 0 | 0 |
| Birdies | 2 | 5 | 3 | 4 | 14 |
| Pars | 13 | 10 | 10 | 13 | 46 |
| Bogeys | 3 | 3 | 5 | 1 | 12 |
| Double Bogeys | 0 | 0 | 0 | 0 | 0 |
| Other | 0 | 0 | 0 | 0 | 0 |
| Par 3's | Even | +1 | +1 | Even | +2 |
| Par 4's | +2 | -2 | +3 | -1 | +2 |
| Par 5's | -1 | -1 | -2 | -2 | -6 |