|This article needs additional citations for verification. (June 2008)|
|Olympic medal record|
|Competitor for South Africa|
|1920 Antwerp||400 metres|
|1920 Antwerp||4x400 m relay|
|1920 Antwerp||800 metres|
Rudd was born in Kimberley. He was the son of Henry Percy Rudd and Mable Mina Blyth; paternal grandson of Charles Rudd, who co-founded the De Beers diamond mining company, and Frances Chiappini; and maternal grandson of Captain Matthew Smith Blyth CMG, chief magistrate of the Transkei, and Elizabeth Cornelia Philpott.
During his schooling at St. Andrew's College, Grahamstown, he excelled both as a student and as an athlete, and he was granted a scholarship for Oxford University. Rudd served in the First World War, and was awarded a Military Cross for bravery.
As for his athletic career, 1920 was his most successful year. At the 1920 Olympics, held in Antwerp, Rudd won three medals, one of each color. In the 400 m, he won the gold medal, in a clear victory over Britain's Guy Butler. He added a silver medal in the 4 x 400 m relay with the South African team, and finished third in the 800 m. In addition to his Olympic successes, Rudd became the British champion over 440 yd (402 m) and 880 yd (805 m), and was named best athlete of the year in Great Britain. In 1921, he broke the 440 yd (402 m) World Record.
Rudd completed his studies in England, and returned to South Africa, working as a sports journalist.
He married Ursula Mary Knight, daughter of Clifford Hume Knight the Italian Consul to Cape Town, in 1926; they had at least two sons: Bevil John Blyth Rudd and Clifford Robin David Rudd, the South African Cricketer.