1966 U.S. Open: Billy Casper wins at Olympic Club
Billy Casper won the 1966 U.S. Open at Olympic Club in San Francisco, California with 278 (−2), beating Arnold Palmer in a playoff.
Updated October 23, 2026
See 1966 in the U.S. Open room, or every year on the U.S. Open winners list.
- Dates
- June 16, 1966 to June 20, 1966
- Course
- Olympic Club, San Francisco, California
- Edition
- 66th U.S. Open
- Champion
- Billy Casper · USA · born San Diego, California, USA
- Champion's title
- 2nd U.S. Open title
- Winning score
- 278 (−2)
- Runner-up
- Arnold Palmer
- Playoff
- 18 holes, 69–73
Winner and runner-up
| Pos. | Player | Total | To par |
|---|---|---|---|
| 1 | Billy Casper | 278 | −2 |
| 2 | Arnold Palmer |
What happened at the 1966 U.S. Open
Casper wiped out a seven-stroke deficit over the final nine holes and won the playoff.
How this was built
Every value is shown as recorded in GNN's U.S. Open data. A value no source confirmed is left out; nothing is estimated. Where sources disagree, the organizer's own record is used.
Data: us-open-years.json (the U.S. Open room's data); dates from GNN's U.S. Open final-day dates table (Wikipedia infoboxes).