| 1987 U.S. Women's Open | |
| Dates: | July 23–28, 1987 |
| Location: | Edison, New Jersey |
| Course: | Plainfield Country Club |
| Org: | USGA |
| Tour: | LPGA Tour |
| Par: | 72 |
| Yardage: | [1] |
| Field: | 153 players, 68 after cut |
| Cut: | 152 (+8) |
| Purse: | $325,000 |
| Winners Share: | $55,000 |
| Champion: | Laura Davies |
| Score: | 285 (−3), playoff |
| Previous: | 1986 |
| Next: | 1988 |
The 1987 U.S. Women's Open was the 42nd U.S. Women's Open, held July 23–28 at Plainfield Country Club in Edison, New Jersey, a suburb southwest of New York City.
Laura Davies won the first of her four major titles in an 18-hole Tuesday playoff over runners-up Ayako Okamoto and Joanne Carner. The final round concluded on Monday after rain delays. It was Davies' first victory in the United States,[2] [3] and she became the fourth international winner of the championship.[4]
Following this year, the Women's Open was not played in the New York City area for over a quarter century, returning in 2013 at Sebonack on eastern Long Island. In that time, the winner's share of the purse grew over tenfold, from $55,000 to $585,000.
Thursday, July 23, 1987
| Place | Player | Score | To par |
|---|---|---|---|
| T1 |  Dot Germain | 69 | −3 |
| Bonnie Lauer | |||
| 3 | Kathy Postlewait | 70 | −2 |
| T4 |  Ayako Okamoto | 71 | −1 |
| Sandra Palmer | |||
| Jody Rosenthal | |||
| T7 | Amy Alcott | 72 | E |
| Marci Bozarth | |||
| Laura Davies | |||
| Tammie Green | |||
| Deb Richard |
Friday, July 24, 1987
| Place | Player | Score | To par |
|---|---|---|---|
| 1 | Laura Davies | 72-70=142 | −2 |
| T2 | Ayako Okamoto | 71-72=143 | −1 |
| Sandra Palmer | 71-72=143 | ||
| Jody Rosenthal | 71-72=143 | ||
| T5 | 69-75=144 | E | |
| 71-72=144 | |||
| T7 | Marci Bozarth | 72-73=145 | +1 |
| Debbie Massey | 76-69=145 | ||
| Bonnie Lauer | 69-76=145 | ||
| Martha Nause | 76-69=145 | ||
| Dottie Pepper | 73-72=145 | ||
| Cindy Rarick | 74-71=145 | ||
| Deb Richard | 72-73=145 |
Saturday, July 25, 1987
| Place | Player | Score | To par | |
|---|---|---|---|---|
| 1 | Ayako Okamoto | 71-72-70=213 | −3 | |
| 2 | Laura Davies | 72-70-72=214 | −2 | |
| 3 | Martha Nause | 76-69-70=215 | −1 | |
| align=center rowspan=2 | T4 | JoAnne Carner | 74-70-72=216 | E |
| Deedee Roberts | 74-73-69=216 | |||
| align=center rowspan=3 | T6 | Rosie Jones | 75-71-71=217 | +1 |
| Sally Quinlan | 75-71-71=217 | |||
| Jody Rosenthal | 71-72-74=217 | |||
| align=center rowspan=3 | T9 | Tammie Green | 72-74-72=218 | +2 |
| Betsy King | 75-73-70=218 | |||
| Sandra Palmer | 71-72-75=218 |
Monday, July 27, 1987
Play on Sunday was postponed due to heavy rain.
| Place | Player | Score | To par | Money ($) | |
|---|---|---|---|---|---|
| align=center rowspan=3 | T1 | Laura Davies | 72-70-72-71=285 | −3 | Playoff |
| Ayako Okamoto | 71-72-70-72=285 | ||||
| JoAnne Carner | 74-70-72-69=285 | ||||
| align=center rowspan=2 | T4 | Betsy King | 75-73-70-71=289 | +1 | 13,461 |
| Jody Rosenthal | 71-72-74-72=289 | ||||
| align=center rowspan=2 | T6 | Debbie Massey | 76-69-74-71=290 | +2 | 9,741 |
| Deedee Roberts | 74-73-69-74=290 | ||||
| 8 | Martha Nause | 76-69-70-76=291 | +3 | 8,390 | |
| align=center rowspan=3 | T9 | Kathy Postlewait | 70-79-73-70=292 | +4 | 7,111 |
| Rosie Jones | 75-71-71-75=292 | ||||
| Sally Quinlan | 75-71-71-75=292 |
Tuesday, July 28, 1987
| Place | Player | Score | To par | Money ($) | |
|---|---|---|---|---|---|
| 1 | Laura Davies | 71 | −1 | 55,000 | |
| align=center rowspan=2 | T2 | 73 | +1 | 23,824 | |
| 74 | +2 |