Career
In 1912 d'Arcy was eliminated in the semifinals of both 100 m and 200 m events. United States was later disqualified for a fault in passing the baton, the same mistake was made in the final by world record holder and main favourite German team. At the 1920 Summer Olympics, d'Arcy again reached the semifinals of the 100 m and also ran in the heats of the 200 m.
He ran again the third leg in the British 4 × 100 m relay team which finished fourth. After the Games he moved to South Africa, where he lived until his death in 1961.