Rubuta ci gaba don wannan sakin layi - Koba ta yi yawancin wasanninta na kasa da kasa a tsakiyar shekarun 1990 don Ukraine. Ta kasance mai lambar tagulla a cikin mita 10,000 a gasar cin kofin Turai ta 1993, kodayake an dakatar da zabar ta don wannan taron a gasar zakarun duniya ta 1993 saboda rauni. A cikin 1994 ta kasance memba na ƙungiyar ƙasa don Yokohama Women's Ekiden, 1994 IAAF World Cross Country Championships da 1994 European Cross Country Championships (sanya na goma a na biyun). Ta jagoranci matsayi ga matan Ukraine a gasar zakarun duniya ta 1995 IAAF
a matsayi na 60 kuma ya dauki tagulla na 5000 m a gasar cin kofin Turai ta 1995. An fitar da ita a cikin zafin jiki a babban bayyanarta na ƙarshe na duniya, a gasar tseren mita 5000 na 1995 na Duniya.