This was the ninth time the event was held, having appeared at every Olympics since the first in 1896. Notable entrants included Canada's Percy Williams, the defending gold medalist and world record holder, and American Ralph Metcalfe, NCAA champion and U.S. Olympic trial winner. Two electrical timing devices, one hand-operated and one camera-based, were introduced to "double check" the stop watches. China was represented in the event for the first time. The United States was the only nation to have appeared at each of the first nine Olympic men's 100 metres events.
Competition format
The event retained the four round format from 1920–1928: heats, quarterfinals, semifinals, and a final. There were 7 heats, of 4–6 athletes each, with the top 3 in each heat advancing to the quarterfinals. The 21 quarterfinalists were placed into 4 heats of 4 or 5 athletes. Again, the top 3 advanced. There were 2 heats of 6 semifinalists, once again with the top 3 advancing to the 6-man final.
Records
These are the standing world and Olympic records prior to the 1932 Summer Olympics.
Arthur Jonath equalled the standing Olympic record with 10.6 in the third heat of the first round. Eddie Tolan set a new Olympic record with 10.4 in the first heat of the quarterfinals, and equalled the world record of 10.3 in the final along with Ralph Metcalfe.
Results
Heats
Heat one
Rank
Athlete
Nation
Time
Notes
1
Eddie Tolan
10.9
2
José de Almeida
11.0
3
Fernando Ortíz
11.2
4
André Théard
11.4
5
António Rodrigues
11.5
–
Fred Reid
Heat two
Rank
Athlete
Nation
Time
Notes
1
George Simpson
10.9
2
Ernie Page
11.1
3
Andrej Engel
11.2
4
Bunoo Sutton
11.4
5
Liu Changchun
China
11.5
Heat three
Rank
Athlete
Nation
Time
Notes
1
Arthur Jonath
10.6
,
2
Allan Elliot
10.8
3
Izuo Anno
10.9
4
Ronald Vernieux
11.0
5
Samuel Giacosa
11.1
Heat four
Heat five
Rank
Athlete
Nation
Time
Notes
1
Ralph Metcalfe
11.0
2
Bert Pearson
11.1
3
Angelos Lambrou
11.3
4
Fernando Ramírez
11.4
Heat six
Rank
Athlete
Nation
Time
Notes
1
Danie Joubert
11.0
2
Harold Wright
11.2
3
Ernst Geerling
11.3
4
Ricardo Guimarães
11.4
Heat seven
Rank
Athlete
Nation
Time
Notes
1
Takayoshi Yoshioka
10.9
2
Chris Berger
11.1
3
Héctor Berra
11.2
4
Stanley Fuller
11.3
5
Mario Marques
11.5
Quarterfinals
Berra and Lambrou withdrew before the quarterfinals.
Quarterfinal one
Rank
Athlete
Nation
Time
Notes
1
Eddie Tolan
10.53
,
2
Carlos Bianchi
10.5
3
Percy Williams
10.7
4
Chris Berger
10.7
5
Fernando Ortíz
11.0
Quarterfinal two
Rank
Athlete
Nation
Time
Notes
1
George Simpson
10.74
2
Harold Wright
10.9
3
Helmut Körnig
11.0
4
Andrej Engel
11.1
Quarterfinal three
Rank
Athlete
Nation
Time
Notes
1
Ralph Metcalfe
10.77
2
Takayoshi Yoshioka
10.8
3
Allan Elliot
10.9
4
Ernie Page
10.9
5
Ernst Geerling
11.1
Quarterfinal four
Rank
Athlete
Nation
Time
Notes
1
Arthur Jonath
10.68
2
Danie Joubert
10.6
3
Bert Pearson
10.7
4
José de Almeida
10.8
5
Izuo Anno
10.9
Semifinals
Semifinal one
The finish was close enough that the timing showed errors. Film of the race "clearly shows that Yoshioka won, with Joubert second, and Tolan third" but Tolan was declared the winner at 10.81 seconds, Joubert second also at 10.81 seconds, and Yoshioka third at 10.83 seconds. Because all three advanced to the final anyway, the discrepancy did not matter.
Rank
Athlete
Nation
Time
Notes
1
Eddie Tolan
10.81
2
Danie Joubert
10.81
3
Takayoshi Yoshioka
10.83
4
Percy Williams
10.91
5
Allan Elliot
11.0
6
Helmut Körnig
11.2
Semifinal two
Rank
Athlete
Nation
Time
Notes
1
Ralph Metcalfe
10.65
2
George Simpson
10.70
3
Arthur Jonath
10.71
4
Carlos Bianchi
10.73
5
Bert Pearson
10.95
6
Harold Wright
11.1
Final
Under the rules in force at the time, runners were judged to have finished the race when they had crossed the line; in 1933, this was changed so that runners finished the race when they reached the line. The final was close enough that had this rule been in force at the Games, Metcalfe would have been the winner: Melcalfe reached the finish line first, but Tolan, who was shorter, crossed the line first.