| Year |
Result |
Place |
Venue |
Date |
| 1955 |
49.15 |
12 |
Mexico City |
Mar 18 |
| 1956 |
49.64 |
17 |
Melbourne |
Nov 28 |
|
| International |
| Year |
Result |
Place |
| 1955 (PanAmer) |
49.15 |
1 |
| 1956 (Olympic) |
48.00 |
8 |
| National |
| Year |
Result |
Place |
| 1954 (USA Champ.) |
38.73 |
1 |
| 1955 (USA Champ.) |
45.75 MR |
1 |
| 1956 (Olympic Trial) |
46.76 TR |
1 |
| 1956 (USA Champ.) |
48.49 MR |
1 |
| 1960 (Olympic Trial) |
49.82 AR |
1 |
|
| American Records |
|
(• - Record was ratified)
|
| • |
49.15 |
Mexico City
|
Mar 18, 1955
|
| • |
49.64 |
Melbourne
|
Nov 28, 1956
|
| • |
49.82 |
Abilene
|
Jul 16, 1960
|
| • |
50.62 |
Rome
|
Sep 01, 1960
|
|