Head-to-Head
Overview
E. Kalieva and Sofia Costoulas have met 1 time so far, all in 2026. E. Kalieva leads 1–0. Their first encounter was at the 2026 US Open (SF), won by E. Kalieva.
By surface
- hard1 – 0
E. Kalieva and Sofia Costoulas have met 1 time so far, all in 2026. E. Kalieva leads 1–0. Their first encounter was at the 2026 US Open (SF), won by E. Kalieva.