1990 U.S. Amateur: Phil Mickelson wins at Cherry Hills Country Club
Phil Mickelson won the 1990 U.S. Amateur at Cherry Hills Country Club in Englewood, Colorado, beating Manny Zerman 5 & 4 in the final.
Updated October 22, 2026
Walk this draw in the U.S. Amateur room.
- Edition
- 90th
- Dates
- August 21, 1990 to August 26, 1990
- Course
- Cherry Hills Country Club, Englewood, Colorado
- Stroke-play co-host
- Meridian Golf Club, Englewood, Colorado
- Format
- stroke-play qualifying (36 holes) + match play
- Champion
- Phil Mickelson · age 20 · United States · Arizona State University
- Champion's title
- 1st U.S. Amateur
- Runner-up
- Manny Zerman · age 20
- Final
- 5 & 4
- Losing semifinalists
- David Eger and unknown
- Stroke-play medalist
- Phil Mickelson (135)
- Defending champion
- Chris Patton
- Entries
- 4,765
What happened at the 1990 U.S. Amateur
Mickelson shot a record-tying 64 in the second qualifying round to take the medal at 135.
Final: Zerman got within one in the afternoon, but Mickelson won holes 10 and 11 and birdied five of the last 12, beating his former high-school teammate 5 & 4.
The draw
Every match is recorded through the final; earlier rounds are partial (semifinal (1 of 2 matches); round of 32 (1 of 16 matches)).
The final, 1990 U.S. Amateur
| Winner | Beaten | Result | |
|---|---|---|---|
| Phil Mickelson | def. | Manny Zerman | 5 & 4 |
Semifinals, 1990 U.S. Amateur
| Winner | Beaten | Result | |
|---|---|---|---|
| Phil Mickelson | def. | David Eger | 4 & 3 |
Round of 32, 1990 U.S. Amateur
| Winner | Beaten | Result | |
|---|---|---|---|
| Phil Mickelson | def. | Jeff Thomas | won on 20th hole |
How this was built
Every value is shown as recorded in GNN's U.S. Amateur data set (research collected through October 20, 2026). "unknown" means no source confirmed it; nothing is estimated. Where sources disagree, the USGA's own record is used.
Data: us-amateur.json.