Sofia Costoulas vs Nao Hibino — Livesport Prague Open Qualifying Semi-final
Costoulas S.
Sofia Costoulas defeated Nao Hibino in the Livesport Prague Open semifinals, 6-7, 7-5, 6-4. Costoulas hit 7 aces to Hibino's 2 and converted 39% of break points to her opponent's 33%. Costoulas won 68% of her first-serve points to Hibino's 54%, and she broke Hibino's serve 7 times to Hibino's 5.
Key context
- Match story: Sofia Costoulas dropped the opening set before beating Nao Hibino 6–7 7–5 6–4.
Head to head
No previous meetings on record.
Statistics
This seasonAverages over each player's completed matches in the selected window (43 vs 38). ATP, WTA & Challenger.
Clutch
Under pressurePerformance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Win Probability
Pre-match · updated 11:50 UTC50–58%
58–67%
67–80%
80%+
Slight edge · Costoulas S. narrowly ahead
Calibrated model · 65% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.
Umpiry Score
Pre-matchThe Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
Freshness
Recent loadCostoulas S.: 14 days rest · 1 match (14d) · Hibino N.: 20 days rest. Higher means fresher. About