Derval ta fara karya 13 seconds lokacin da ta gama 4th a
2003 European Under 23 Athletics Championships a Bydgoszcz, Poland, suna gudanar da rikodin ƙasa na 12.96 seconds, sun rasa lambar yabo ta hanyar kawai 0.01 seconds. Wannan alamar ta gan ta ta cimma daidaitattun 'A' daidaitattun lokacin cancantar wasannin Olympics na 2004.