| Final | time | | L | | 1. Evelyn Ashford |  United States | 10.97s | OR | 4 | | 2. Alice Brown | United States | 11.13s | | 7 | | 3. Merlene Ottey-Page |  Jamaica | 11.16s | | 6 | | 4. Jeanette Bolden | United States | 11.25s | | 1 | | 5. Grace Jackson | Jamaica | 11.39s | | 8 | | 6. Angela Bailey |  Canada | 11.40s | | 5 | | 7. Heather Oakes |  Great Britain | 11.43s | | 3 | | 8. Angella Taylor | Canada | 11.62s | | 2 |
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| | | Venue: Los Angeles Memorial Coliseum 100,000. 46 competitors from -- nations. |
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| | | First 4 from each Semi advanced to Final. |
| Semi 1 | time | | L | | 1. Evelyn Ashford | United States | 11.03s | Q | 3 | | 2. Merlene Ottey-Page | Jamaica | 11.17s | Q | 7 | | 3. Grace Jackson | Jamaica | 11.27s | Q | 2 | | 4. Angella Taylor | Canada | 11.36s | Q | 5 | | 5. Helinae Marjamaa |  Finland | 11.37s | | 6 | | 6. Marie-France Loval |  France | 11.64s | | 7 | | 7. Liliane Gaschet | France | 11.68s | | 4 | | 8. Ngambi Cécile |  Cameroon | 11.91s | | 1 |
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| Semi 2 | time | | L | | 1. Alice Brown | United States | 11.31s | Q | 2 | | 2. Jeanette Bolden | United States | 11.48s | Q | 3 | | 3. Angela Bailey | Canada | 11.54s | Q | 5 | | 4. Heather Oakes | Great Britain | 11.57s | Q | 6 | | 5. Rose-Aimée Bacoul | France | 11.58s | | 7 | | 6. Heidi-Elke Gaugel |  West Germany | 11.62s | | 1 | | 7. Pauline Davis |  Bahamas | 11.70s | | 8 | | 8. Juliet Cuthbert | Jamaica | 11.80s | | 4 |
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| Quarter 1 | time | | L | | 1. Evelyn Ashford | United States | 11.21s | Q | 7 | | 2. Angela Bailey | Canada | 11.47s | Q | 6 | | 3. Heidi-Elke Gaugel | West Germany | 11.50s | Q | 3 | | 4. Liliane Gaschet | France | 11.51s | Q | 5 | | 5. Els Vader |  Netherlands | 11.56s | | 8 | | 6. Angela Williams |  Trinidad Tobago | 11.89s | | 1 | | 7. Doris Wiredu |  Ghana | 12.00s | | 4 | | 8. Binta Jambane |  Mozambique | 12.57s | | 2 |
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| Quarter 2 | time | | L | | 1. Merlene Ottey-Page | Jamaica | 11.21s | Q | 5 | | 2. Rose-Aimée Bacoul | France | 11.37s | Q | 6 | | 3. Angella Taylor | Canada | 11.42s | Q | 8 | | 4. Ngambi Cécile | Cameroon | 11.82s | Q | 7 | | 5. Gillian Forde | Trinidad Tobago | 11.86s | | 1 | | 6. Lydia de Vega |  Philippines | 11.97s | | 3 | | 7. Shirley Thomas | Great Britain | 12.13s | | 4 | | 8. Francoise Mpika |  Congo | 12.60s | | 2 |
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| Quarter 3 | time | | L | | 1. Alice Brown | United States | 11.35s | Q | 4 | | 2. Helinae Marjamaa | Finland | 11.51s | Q | 3 | | 3. Heather Oakes | Great Britain | 11.54s | Q | 1 | | 4. Juliet Cuthbert | Jamaica | 11.71s | Q | 7 | | 5. Eldece Clarke | Bahamas | 11.85s | | 5 | | 6. France Gareau | Canada | 11.88s | | 2 | | 7. Christa Schumann-Lottman |  Guatemala | 12.23s | | 6 | | -. Felicia Candelario |  Dominicana | DNS | | 8 |
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| Quarter 4 | time | | L | | 1. Grace Jackson | Jamaica | 11.38s | Q | 8 | | 2. Jeanette Bolden | United States | 11.42s | Q | 4 | | 3. Marie-France Loval | France | 11.56s | Q | 5 | | 4. Pauline Davis | Bahamas | 11.61s | Q | 6 | | 5. Teresa Rione |  Spain | 11.76s | | 1 | | 6. Esmeralda de Jesus Garcia |  Brazil | 11.82s | | 7 | | 7. Ruth Enang Mesode | Cameroon | 12.02s | | 2 | | 8. Nzaeli Kyomo |  Tanzania | 12.53s | | 3 |
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| Heat 1 | time | | L | | 1. Jeanette Bolden | United States | 11.25s | Q | 2 | | 2. Rose-Aimée Bacoul | France | 11.36s | Q | 5 | | 3. Els Vader | Netherlands | 11.43s | Q | 7 | | 4. Gillian Forde | Trinidad Tobago | 11.76s | Q | 1 | | 5. Ruth Enang Mesode | Cameroon | 11.81s | Q | 3 | | 6. Semra Aksu |  Turkey | 11.86s | | 5 | | 7. Barbara Ingiro |  Papua New Guinea | 12.19s | | 8 | | 8. Eugenia Osho-Williams |  Sierra Leone | 12.57s | | 4 |
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| Heat 2 | time | | L | | 1. Pauline Davis | Bahamas | 11.51s | Q | 6 | | 2. Juliet Cuthbert | Jamaica | 11.83s | Q | 8 | | 3. Christa Schumann-Lottmann | Guatemala | 12.04s | Q | 4 | | 4. Françoise M:Pika | Congo | 12.54s | Q | 5 | | 5. Binta Jambane | Mozambique | 12.55s | Q | 7 | | 6. Miriama Tuisorisori-Chambault |  Fiji | 13.04s | | 3 |
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| Heat3 | time | | L | | 1. Evelyn Ashford | United States | 11.06s | Q | 4 | | 2. Grace Jackson | Jamaica | 11.24s | Q | 7 | | 3. Heather Oakes | Great Britain | 11.32s | Q | 3 | | 4. Teresa Rioné | Spain | 11.55s | Q | 5 | | 5. France Gareau | Canada | 11.66s | Q | 1 | | 6. Doris Wiredu | Ghana | 11.85s | q | 6 | | 7. Jabou Jawo |  Gambia | 12.10s | NR | 2 | | 8. Walapa Tangjitsusorn |  Thailand | 12.18s | | 8 |
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| Heat 4 | time | | L | | 1. Alice Brown | United States | 11.15s | Q | 3 | | 2. Liliane Gaschet | France | 11.42s | Q | 6 | | 3. Angela Bailey | Canada | 11.56s | Q | 4 | | 4. Esmeralda de Jesus Garcia | Brazil | 11.63s | Q | 2 | | 5. Ngambi Cécile | Cameroon | 11.67s | Q | 5 | | 6. Evelyn Farrell |  Neth. Antilles | 11.94s | | 8 | | 7. Lee Young-sook |  South Korea | 12.06s | | 7 | | 8. Divina Estrella | Dominicana | 12.25s | | 1 |
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| Heat 5 | time | | L | | 1. Angella Taylor | Canada | 11.23s | Q | 1 | | 2. Helinä Marjamaa | Finland | 11.43s | Q | 3 | | 3. Shirley Thomas | Great Britain | 11.91s | Q | 8 | | 4. Felicia Candelario | Dominicana | 12.12s | Q | 7 | | 5. Nzaeli Kyomo | Tanzania | 12.26s | Q | 6 | | 6. Maya Bentzur |  Israel | 12.30s | | 4 | | 7. Grace Ann Dinkins |  Liberia | 12.35s | | 2 | | 8. Gisèle Ongollo |  Gabon | 12.40s | | 5 |
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| Heat 6 | time | | L | | 1. Merlene Ottey-Page | Jamaica | 11.26s | Q | 3 | | 2. Heidi-Elke Gaugel | West Germany | 11.38s | Q | 2 | | 3. Marie-France Loval | France | 11.51s | Q | 5 | | 4. Eldece Clarke | Bahamas | 11.61s | Q | 7 | | 5. Angela Williams | Trinidad Tobago | 11.74s | Q | 6 | | 6. Lydia de Vega | Philippines | 11.85s | q | 1 | | 7. Ruperta Charles |  Antigua Barbuda | 12.04s | | 8 | | 8. Marie-Ange Wirtz |  Seychelles | 12.61s | | 4 |
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