Sofia Costoulas vs Claire Liu — W75 Kofu Round of 16
W75 Kofu · CHALLENGER · Round of 16
2 — 1
Sets
Monday, 16 March 2026 ·
hard
Costoulas S.6-7 6-3 7-6
Liu C.
Costoulas S.
6672
Liu C.
7361
Sofia Costoulas defeated Claire Liu 6-7 6-3 7-6 in the W75 Kofu round of 16 on hard. The upset overturned the form book — Claire Liu came in ranked #114.
Key context
- Match story: Sofia Costoulas dropped the opening set before beating Claire Liu 6–7 6–3 7–6.
Head to head
No previous meetings on record.
Statistics
This season1st serve in·Slight edge
61%
69%
1st serve points won·Slight edge
68%
61%
2nd serve points won·Even
43%
47%
Service points won·Even
58%
57%
Return points won·Even
45%
47%
Break points saved·Even
53%
55%
Aces / match·Slight edge
3.3
2.5
Double faults / match·Clear edge
3.0
2.2
Averages over each player's completed matches in the selected window (43 vs 44). ATP, WTA & Challenger.
Clutch
Under pressureClutch Rating·Dominant
83
29
Break points saved·Dominant
83
23
Break points won·Slight edge
82
76
Deciding sets·Dominant
96
34
Tiebreaks·
—
39
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Freshness
Recent loadFreshness·Even
100
96
Costoulas S.: 20 days rest · Liu C.: 11 days rest · 2 matches (14d). Higher means fresher. About
Conditions
Court speed
Medium-slowfavours grinders
SlowFast