Alex Wilson first represented Canada at the Olympic Games at Amsterdam 1928, where he won bronze as a member of the 4x400m relay team. He then went on to compete at Los Angeles 1932 in which he captured silver in the 800m, as well as a pair of bronze medals in the 400m and 4x400m relay. At the 1930 British Empire Games (now the Commonwealth Games), Wilson also showed off his exceptional talents in winning gold in the 440 yards, silver in the 4×440 yards relay and bronze in the 880 yards. Wilson was also a NCAA national champion in the 400m for the University of Notre Dame and later went on to coach for the University, leading his athletes to four NCAA national championships.
|1928 Amsterdam||Athletics||Relay 4x400m - Men||Bronze|
|1928 Amsterdam||Athletics||400m - Men||-|
|1928 Amsterdam||Athletics||800m - Men||-|
|1932 Los Angeles||Athletics||400m - Men||Bronze|
|1932 Los Angeles||Athletics||Relay 4x400m - Men||Bronze|
|1932 Los Angeles||Athletics||800m - Men||Silver|