[1] Representing her nation Bulgaria in two editions of the Olympic Games (2000 and 2004), Kumanova initiated her athletics career as a hammer throw specialist, before turning sights extensively on the shot put event.

[2] In 2000, Kumanova demolished a Bulgarian record at 65.35 metres in the hammer throw from the European Cup Series in Sofia, and then attained her own personal best of 18.38 in the shot put at the same tournament three years later.

[2] Kumanova made her official debut at the 2000 Summer Olympics in Sydney, where she initially competed in the inaugural women's hammer throw.

During the qualifying stage, she tossed a hammer at a satisfying distance of 54.92 metres on her second attempt, but finished only in twenty-sixth position from the overall standings.

[2] Earlier in the process, she attained her personal best and a B-standard entry throw of 18.38 metres from the shot put meet in Sofia.