Rubuta ci gaba don wannan sakin layi - Babban tserenta na 1991 ya zo sama da mita 10,000 a gasar zakarun duniya ta 1991. Ko da yake ta cancanci sauƙi tare da gudu na minti 31:55.97, ba ta iya daidaita wannan nau'in a wasan karshe ba, wanda ta gama na 19 kuma ya fi minti ɗaya jinkiri. Aikin Sarjan ya fara raguwa kuma a 1992 ta zo 27th a 1992 World Cross Country
tseren kuma ya kasa yin shi daga tseren mita 10,000 a gasar Olympics ta Barcelona ta 1992. Ta kasance wani ɓangare na tawagar mata da suka lashe lambar tagulla a gasar zakarun duniya ta 1993 ta IAAF, amma Farida Fatès ce ta jagoranci tawagar yayin da Sergent ta gama a matsayi na 34. A Gasar Cin Kofin Duniya ta 1993 a Wasannin motsa jiki an cire ta a cikin zafin jiki na mita 3000 a karo na uku da na karshe a gasar. Ba ta ƙare kakar wasa ba tare da komai ba, duk da haka, kamar yadda a Wasannin Mediterranean na 1993, wanda aka gudanar a gida a Languedoc-Roussillon, ta dauki lambar azurfa a kan 3000 m.