1975 U.S. Open: Lou Graham wins at Medinah C.C.
Lou Graham won the 1975 U.S. Open at Medinah C.C. in Medinah, Illinois with 287 (+3), beating John Mahaffey in a playoff.
Updated October 23, 2026
See 1975 in the U.S. Open room, or every year on the U.S. Open winners list.
- Dates
- June 19, 1975 to June 23, 1975
- Course
- Medinah C.C., Medinah, Illinois
- Edition
- 75th U.S. Open
- Champion
- Lou Graham · USA · born Nashville, Tennessee, USA
- Champion's title
- 1st U.S. Open title
- Winning score
- 287 (+3)
- Runner-up
- John Mahaffey
- Playoff
- 18 holes, 71–73
Winner and runner-up
| Pos. | Player | Total | To par |
|---|---|---|---|
| 1 | Lou Graham | 287 | +3 |
| 2 | John Mahaffey |
What happened at the 1975 U.S. Open
Graham came from 11 back over the last 36 holes (USGA) 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).