| Date | 21 – 24 August 1920 | |
|---|---|---|
| Status | Olympic | |
| Location | Feestzaal, Koninklijke Zoölogische Maatschappij, Antwerpen | |
| Participants | 12 from 7 countries | |
| Format | Single elimination tournament. | |
South Africa’s Sal Walker won four decisions to win the gold medal in this event. The 1919 Inter-Allied Champion had been Albert Evans of Australia, who had defeated Enea Marzzorati of Italy, but neither competed at Antwerp.
| Pos | Competitor | NOC | |||
|---|---|---|---|---|---|
| 1 | Sal Walker |  RSA | Gold | ||
| 2 | Cliff Graham |  CAN | Silver | ||
| 3 | George McKenzie |  GBR | Bronze | ||
| 4 | Henri Hébrans |  BEL | |||
| =5 | Edward Hartman |  USA | |||
| =5 | John Koss |  NOR | |||
| =5 | Henri Ricard |  FRA | |||
| =5 | Sammy Vogel | USA | 1 | ||
| =9 | Alfons Bouwens | BEL | |||
| =9 | Georges Cochon | FRA | |||
| =9 | Dan Bowling | GBR | |||
| =9 | Hjalmar Nygaard | NOR |
| Date | 21 August 1920 |
|---|---|
| Format | Winner of each match advanced to the second round. |
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 21 Aug | George McKenzie | GBR | ||||
| Match #2 | 21 Aug | John Koss | NOR | ||||
| Match #3 | 21 Aug | Sal Walker | RSA | Decision | Alfons Bouwens | BEL | |
| Match #4 | 21 Aug | Edward Hartman | USA | Decision | Dan Bowling | GBR | |
| Match #5 | 21 Aug | Cliff Graham | CAN | ||||
| Match #6 | 21 Aug | Henri Ricard | FRA | Decision | Hjalmar Nygaard | NOR | |
| Match #7 | 21 Aug | Henri Hébrans | BEL | ||||
| Match #8 | 21 Aug | Sammy Vogel | USA | Decision | Georges Cochon | FRA |
| Date | 22 August 1920 |
|---|---|
| Format | Winner of each match advanced to the semi-finals. |
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 22 Aug | George McKenzie | GBR | Decision | John Koss | NOR | |
| Match #2 | 22 Aug | Sal Walker | RSA | Decision | Edward Hartman | USA | |
| Match #3 | 22 Aug | Cliff Graham | CAN | Knock-out | Henri Ricard | FRA | |
| Match #4 | 22 Aug | Henri Hébrans | BEL | Decision | Sammy Vogel | USA |
| Date | 23 August 1920 |
|---|---|
| Format | Winner of each match advanced to the final match. |
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match #1 | 23 Aug | Sal Walker | RSA | Decision | George McKenzie | GBR | |
| Match #2 | 23 Aug | Cliff Graham | CAN | Decision | Henri Hébrans | BEL |
| Date | 24 August 1920 |
|---|
| Match | Date/Time | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|
| Match 1/2 | 24 Aug | Sal Walker | RSA | Decision | Cliff Graham | CAN | |
| Match 3/4 | 24 Aug | George McKenzie | GBR | Decision | Henri Hébrans | BEL |
