| Date | 9 August 1984 — 16:00 | |
|---|---|---|
| Status | Olympic | |
| Location | Eagle's Nest Arena, California State University at Los Angeles, Los Angeles, California | |
| Participants | 22 from 22 countries | |
| Format | Two single-elimination pools, with winner of each pool advanced to the final. All judoka losing to the winner of each pool advanced to repêchage pools, with the winners of the repêchage pools earning bronze medals. | |
Due to the Soviet boycott, the favorite’s role fell to the defending champion Belgium’s Robert Van de Walle. Also expected to challenge was West German Günther Neureuther. He had defeated Van de Walle at the 1984 Europeans, and was an Olympic silver medalist in 1976 in heavyweight. But a huge upset occurred in the first round, when unknown American Leo White defeated Van de Walle. In fact, it was such an upset that the referee mistakenly raised the Belgian’s hand before correcting his error. As White had little chance to make the final, and did not, this eliminated Van de Walle from medal contention. Eventually the final came down to two surprising judoka – Brazil’s Douglas Vieira and Korean Ha Hyeong-Ju, who had been bronze medalist at the 1981 World Championships. The final was a well-fought match but the yusei-gachi at the end went to Ha, who won the gold medal.
| Date | 9 August 1984 |
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| Date | 9 August 1984 |
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| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Douglas Vieira | BRA | Koka | Alberto Rubio | ESP | |
| Match #2 | 09 Aug | Abdul Daffé | SEN | bye | |||
| Match #3 | 09 Aug | Robert Köstenberger | AUT | Yusei-gachi | Roger Vachon | FRA | |
| Match #4 | 09 Aug | Juri Fazi | ITA | bye | |||
| Match #5 | 09 Aug | Leo White | USA | Waza-ari | Robert Van de Walle | BEL | |
| Match #6 | 09 Aug | Tareq Al-Ghareeb | KUW | bye | |||
| Match #7 | 09 Aug | Carsten Jensen | DEN | Ippon | Fabián Lannutti | ARG | |
| Match #8 | 09 Aug | Bjarni Friðriksson | ISL | bye |
| Date | 9 August 1984 |
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| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Douglas Vieira | BRA | Sogo-gachi | Abdul Daffé | SEN | |
| Match #2 | 09 Aug | Juri Fazi | ITA | Waza-ari awasete ippon | Robert Köstenberger | AUT | |
| Match #3 | 09 Aug | Leo White | USA | Ippon | Tareq Al-Ghareeb | KUW | |
| Match #4 | 09 Aug | Bjarni Friðriksson | ISL | Ippon | Carsten Jensen | DEN |
| Date | 9 August 1984 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Douglas Vieira | BRA | Yuko | Juri Fazi | ITA | |
| Match #2 | 09 Aug | Bjarni Friðriksson | ISL | Waza-ari | Leo White | USA |
| Date | 9 August 1984 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Douglas Vieira | BRA | Yuko | Bjarni Friðriksson | ISL |
| Date | 9 August 1984 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Abdul Daffé | SEN | Yuko | Alberto Rubio | ESP | |
| Match #2 | 09 Aug | Juri Fazi | ITA | Ippon | Abdul Daffé | SEN | |
| Match 3/5 | 09 Aug | Bjarni Friðriksson | ISL | Ippon | Juri Fazi | ITA |
| Date | 9 August 1984 |
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| Date | 9 August 1984 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Günther Neureuther | FRG | Ippon | Viliame Takayawa | FIJ | |
| Match #2 | 09 Aug | Abdel Majid Senoussi | TUN | bye | |||
| Match #3 | 09 Aug | Nicholas Kokotaylo | GBR | Ippon | Metin Orgarun | TUR | |
| Match #4 | 09 Aug | Essambo Ewane | CMR | bye | |||
| Match #5 | 09 Aug | Ha Hyeong-Ju | KOR | Ippon | John Adams | DOM | |
| Match #6 | 09 Aug | Joe Meli | CAN | bye | |||
| Match #7 | 09 Aug | El-Arabi El-Jamali | MAR | Mohamed Doukouré | GUI | not contested | |
| Match #8 | 09 Aug | Masato Mihara | JPN | bye |
| Date | 9 August 1984 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Günther Neureuther | FRG | Koka | Abdel Majid Senoussi | TUN | |
| Match #2 | 09 Aug | Nicholas Kokotaylo | GBR | Waza-ari | Essambo Ewane | CMR | |
| Match #3 | 09 Aug | Ha Hyeong-Ju | KOR | Yuko | Joe Meli | CAN | |
| Match #4 | 09 Aug | Masato Mihara | JPN | bye |
| Date | 9 August 1984 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Günther Neureuther | FRG | Koka | Nicholas Kokotaylo | GBR | |
| Match #2 | 09 Aug | Ha Hyeong-Ju | KOR | Ippon | Masato Mihara | JPN |
| Date | 9 August 1984 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Ha Hyeong-Ju | KOR | Yuko | Günther Neureuther | FRG |
| Date | 9 August 1984 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 09 Aug | Joe Meli | CAN | Waza-ari | John Adams | DOM | |
| Match #2 | 09 Aug | Joe Meli | CAN | Ippon | Masato Mihara | JPN | |
| Match 3/5 | 09 Aug | Günther Neureuther | FRG | Ippon | Joe Meli | CAN |
| Date | 9 August 1984 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match 1/2 | 09 Aug | Ha Hyeong-Ju | KOR | Yusei-gachi | Douglas Vieira | BRA |