Final | time | | 1. Carl Lewis | United States | 19.80s | OR | 2. Kirk Baptiste | United States | 19.96s | | 3. Thomas Jefferson | United States | 20.26s | | 4. João Batista da Silva | Brazil | 20.30s | | 5. Ralf Lübke | West Germany | 20.51s | | 6. Jean-Jacques Boussemart | France | 20.55s | | 7. Pietro Mennea | Italy | 20.55s | | 8. Ade Mafe | Great Britain | 20.85s | |
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| Venue: Los Angeles Memorial Coliseum 100,000. -- competitors from -- nations. |
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| First 4 from each Semi advanced to Final. |
Semi 1 | time | | 1. Kirk Baptiste | United States | 20.29s | | 2. Thomas Jefferson | United States | 20.40s | | 3. Pietro Mennea | Italy | 20.47s | | 4. Jean-Jacques Boussemart | France | 20.55s | | 5. Atlee Mahorn | Canada | 20.77s | | 6. Robson da Silva | Brazil | 20.80s | | 7. Gus Young | Jamaica | 21.17s | | 8. Luis Morales | Puerto Rico | 21.22s | |
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Semi 2 | time | | 1. Carl Lewis | United States | 20.27s | | 2. João Batista da Silva | Brazil | 20.61s | | 3. Ade Mafe | Great Britain | 20.63s | | 4. Ralf Lübke | West Germany | 20.67s | | 5. Desai Williams | Canada | 20.70s | | 6. Stefano Tilli | Italy | 20.72s | | 7. Donald Quarrie | Jamaica | 20.77s | | 8. Carlo Simionato | Italy | 20.92s | |
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Quarter 1 | time | | 1. Carl Lewis | United States | 20.48s | | 2. Stefano Tilli | Italy | 20.64s | | 3. Atlee Mahorn | Canada | 20.69s | | 4. Luis Morales | Puerto Rico | 20.82s | | 5. Mohamed Purnomo | Indonesia | 20.93s | | 6. Patrick Barré | France | 20.95s | | 7. Dudley Parker | Bahamas | 21.10s | | 8. Ali Bakhta | Algeria | 21.35s | |
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Quarter 2 | time | | 1. Desai Williams | Canada | 20.40s | | 2. Pietro Mennea | Italy | 20.50s | | 3. Ade Mafe | Great Britain | 20.55s | | 4. João Batista da Silva | Brazil | 20.61s | | 5. Evers Jürgen | West Germany | 20.95s | | 6. Jang Jae-Keun | South Korea | 20.14s | | 7. John Mayers | Barbados | 21.46s | |
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Quarter 3 | time | | 1. Thomas Jefferson | United States | 20.47s | | 2. Jean-Jacques Boussemart | France | 20.54s | | 3. Donald Quarrie | Jamaica | 20.57s | | 4. Robson da Silva | Brazil | 20.88s | | 5. Julien Thode | Neth. Antiles | 21.45s | | 6. Tony Sharpe | Canada | 21.46s | | 7. John Goville | Uganda | 21.55s | |
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Quarter 4 | time | | 1. Kirk Baptiste | United States | 20.48s | | 2. Ralf Lübke | West Germany | 20.57s | | 3. Gus Young | Jamaica | 20.75s | | 4. Carlo Simionato | Italy | 20.86s | | 5. Peter Van Miltenburg | Australia | 21.09s | | 6. Luke Watson | Great Britain | 21.14s | | 7. Jamal Al-Abdulla | Qatar | 21.44s | |
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Heat 1 | time | | 1. Pietro Mennea | Italy | 20.70s | | 2. Peter Van Miltenburg | Australia | 21.06s | | 3. Robson da Silva | Brazil | 21.08s | | 4. Georges Kablan Degnan | Ivory Coast | 21.39s | | 5. Earl Haley | Guyana | 21.52s | | 6. Inoke Bainimoli | Fiji | 22.16s | | 7. Saidur Rahman Dawn | Bangladesh | 22.59s | | -. Emmanuel Bitanga | Cameroon | DNF | |
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Heat 2 | time | | 1. Leroy Reid | Jamaica | 20.62s | | 2. Ralf Lübke | West Germany | 20.88s | | 3. Luke Watson | Great Britain | 21.26s | | 4. Yu Zhuanghui | China | 21.48s | | 5. Nordin Mohamed Jadi | Malaysia | 21.88s | | 6. Gregory Simons | Bermuda | 21.88s | | 7. James Idun | Ghana | 22.55s | | 8. Glen Abrahams | Costa Rica | 22.75s | |
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Heat3 | time | | 1. Carlo Simionato | Italy | 21.06s | | 2. Dudley Parker | Bahamas | 21.12s | | 3. Jürgen Evers | West Germany | 21.12s | | 4. Florencio Aguilar | Panama | 21.50s | | 5. Oumar Fye | Gambia | 21.56s | | 6. Mohammad Mansha | Pakistan | 22.04s | | 7. Christian Nenepath | Indonesia | 22.20s | | 8. Clifford Sibusiso Mamba | Swaziland | 22.76s | |
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Heat 4 | time | | 1. Thomas Jefferson | United States | 20.63s | | 2. Desai Williams | Canada | 20.70s | | 3. João Batista da Silva | Brazil | 20.70s | | 4. Jamal Al-Abdullah | Qatar | 21.10s | | 5. Paul Narracott | Australia | 21.20s | | 6. Larry Millers | Antigua Barbuda | 21.93s | | 7. Markus Büchel | Liechtenstain | 22.14s | | 8. Augustus Moulton | Liberia | 22.94s | |
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Heat 5 | time | | 1. Patrick Barré | France | 20.88s | | 2. Fred Martin | Australia | 20.98s | | 3. Gus Young | Jamaica | 21.14s | | 4. Alfred Nyambane | Kenya | 21.35s | | 5. Hiroki Fuwa | Japan | 21.37s | | 6. Henry Ngolwe | Zambia | 21.58s | | 7. Antoine Kiakouama | Congo | 21.64s | | 8. Odiya Silweya | Malawi | 22.46s | |
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Heat 6 | time | | 1. Don Quarrie | Jamaica | 20.84s | | 2. Ade Mafe | Great Britain | 21.24s | | 3. Tony Sharpe | Canada | 21.31s | | 4. Sumet Promna | Thailand | 21.53s | | 5. Lindel Hodge | Brit. Virgin Islands | 22.28s | | 6. Mohamed Al-Hashimi | Oman | 22.83s | | 7. Aldo Salandra | El Salvador | 22.90s | | 8. Jean-Yves Mallat | Libya | 22.91s | |
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Heat 7 | time | | 1. Carl Lewis | United States | 21.02s | | 2. Atlee Mahorn | Canada | 21.42s | | 3. Julien Thode | Neth. Antiles | 21.62s | | 4. Manuel Ramírez | Colombia | 21.71s | | 5. Henrique Ferreira | Mozambique | 21.87s | | 6. Luís Barroso | Portugal | 22.03s | | 7. Christopher Madzokere | Zimbabwe | 22.75s | |
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Heat 8 | time | | 1. Kirk Baptiste | United States | 20.63s | | 2. Luis Morales | Puerto Rico | 21.05s | | 3. Neville Hodge | US Virgin Islands | 21.12s | | 4. Ali Bakhta | Algeria | 21.15s | | 5. Arnaldo da Silva | Brazil | 21.24s | | 6. Lapule Tamean | Papua New Guinea | 21.97s | | 7. Gustavo Envela | Equat. Quinea | 22.14s | | 8. Emilio Samayoa | Guatemala | 22.19s | |
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Heat 9 | time | | 1. Stefano Tilli | Italy | 20.72s | | 2. Jean-Jacques Boussemart | France | 20.82s | | 3. Mohamed Purnomo | Indonesia | 21.01s | | 4. David Sawyerr | Siera Leone | 21.29s | | 5. Ivan Benjamin | Siera Leone | 21.54s | | 6. Moussa Savadogo | Mali | 21.72s | | 7. Denis Rose | Seychelles | 21.87s | |
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Heat 10 | time | | 1. Jang Jae-Geun | South Korea | 21.32s | | 2. John Goville | Uganda | 21.59s | | 3. John Mayers | Barbados | 21.70s | | 4. Nelson Erazo | Puerto Rico | 21.72s | | 5. Damel Flowers | Belize | 21.72s | | 6. Daniel André | Mauritius | 22.16s | |
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