Corina is of Romanian heritage and turned professional in 1994. Morariu's highest singles ranking was No. 29 in 1998 but excelled in doubles play and was ranked the world's number one female doubles player in 2000 mostly with Davenport as her partner. In May of 2001, Morariu was diagnosed with leukemia and began a treatment program of chemotherapy. Fortunately, Corina made a full recovery and returned to competition in 2002. She was awarded the "Corina Comeback" Award by Jennifer Capriati. In 2002-3 Corina injured her shoulder which required surgery and later suffered a knee injury that kept her from competing for the rest of the year.
Due to all her injuries, Corina opted to retire in 2007 and to continue her broadcasting career as one of the main Tennis Analyst for the Tennis Channel.