Sekpona qualified for the Togolese squad in the men's 800 metres at the 2004 Summer Olympics in Athens by attaining an entry time and a personal best of 1:52.40.
Running against seven other athletes in heat three, Sekpona crossed the finish line by nearly ten minutes behind leader Wilson Kipketer of Denmark with an eighth-place time in 1:54.25.
Sekpona failed to advance into the semifinals as he placed farther from two automatic slots for the next round and ranked no.