Sofia Costoulas is a professional tennis player from Belgium, born 2 April 2005. The Belgian competes on the WTA Tour. Among WTA players under 22, Costoulas is ranked No. 26. The Belgian's record favours hard (64%, 59-33) over clay (54%, 19-16). The Belgian was born in Genk.
This page tracks Sofia Costoulas's upcoming schedule, latest results, recent form and surface record, with each match linking through to a detailed head-to-head and pre-match analysis. Scores update live as matches are played.
Biographical details (birthplace, residence, coach, height, weight) sourced from Wikidata (CC0 public domain). See Sofia Costoulas on Wikipedia for more.
Rankings
Trends
Costoulas has won 16 of the last 30 first sets
53%Costoulas has won 5 of 9 deciding sets
56%Costoulas has won 64% of matches on hard
54–30Costoulas has won 3 of the last 10 matches
30%Ranking Projection
Trajectory from our weekly snapshots. Defending— points dropping in the next ~12 weeks (last year's results at the same events). Win … — points gained by winning the round they're currently in. Expected — most likely landing rank from our draw model (Elo over the bracket). WTA points table.
Clutch Rating
How a player performs in the biggest moments, across 104 matches in our records. About
Freshness
15 days rest
Recent on-court load (higher = fresher), updated daily. About
Career highs
Ranking trajectory from our weekly snapshots (last ~12 months); peak rating and longest tour-level win streak from our match records. Umpiry rank is the player’s position by our rating — the arrow shows how many spots that is above (▲) or below (▼) their official ranking.
Best results · last 12 months
Best 4: 57 pts- 1Auckland 2026 · Quarters54
- 2Livesport Prague Open 2026 · Last 321
- 3Athens 2026 · Last 321
- 4Bogota 2026 · Last 321
Best results in our records over the last ~12 months; the top 16 count toward the WTA ranking (best-16 rule). Totals are derived from our data and can differ from the official ranking, which has mandatory-event rules and includes the Tour Finals.
2026 season form
26–23W–L53%
- Last 60 days
- 3–6
- Current streak
- 3 losses
- Titles this season
- 1
Recent surface record
Career record
78–55W–L
Career surface record
Fitness watch
3 retirementsin the last 12 months. Based on match status only — a retirement means the match was stopped after it started, a withdrawal means a walkover before it; we don't publish the medical reason.
Recent results
Exhibitions & team events
Shown for completeness — not counted in form, surface, or career stats. 12 matches (exhibitions, Davis / Laver / United Cup).
More Belgium players
Explore the rankings
Frequently asked questions
When was Sofia Costoulas born?
Sofia Costoulas was born on 2 April 2005 (21 years old).
Where is Sofia Costoulas from?
Sofia Costoulas is from Belgium, born in Genk on 2 April 2005.
How good is Sofia Costoulas on clay?
Sofia Costoulas has won 54% of clay-court matches (19-16).
How good is Sofia Costoulas on hard?
On hard, Sofia Costoulas has compiled a 59-33 record (64% wins).