The tennis players Chris Evert (United States) and Hana Mandlíková (Czechoslovakia/Australia) met 26 times during their careers. Evert leads their overall head-to-head series 19–7. In 1981 the rivalry was described as being the most "dramatic" in women's tennis.
Head-to-head breakdown
References
Evert–Mandlikova rivalry Wikipedia(Text) CC BY-SA