At the 2004 Summer Olympics in Athens, Yildiz qualified as a lone female judoka for her second Turkish squad in the women's extra-lightweight class (48 kg), by placing third and receiving a berth from the World Championships in Osaka, Japan. Yildiz opened her fight with a more convincing victory by a waza-ari score over North Korea's Ri Kyong-ok, before she fell shortly in her next match to South Korea's Ye Gue-rin with a double shido deduction and a non-combative penalty.