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Sofia Costoulas: 2026 record, ranking and statistics

Sofia Costoulas (Belgium) is ranked No. 159 in the WTA singles rankings with 471 points (as of October 12, 2026). In 2026, Sofia Costoulas is 19-19 in the 38 completed matches StatsNext stores, 13-12 on hard, 6-6 on clay, 0-1 on grass.

Matches through the tournament week of October 5, 2026 · Updated October 16, 2026 at 7:01 PM ET · StatsNext match records

Country: Belgium · Plays: Right-Handed

How is Sofia Costoulas playing in 2026?

Sofia Costoulas is 19-18 in 2026 (51% of 37 completed matches StatsNext stores), 13-12 on hard, 6-5 on clay, 0-1 on grass, and 3-7 in the last 10. Over the last 52 weeks Sofia Costoulas won 59.2% of service points (WTA average 56.1%) and 43.4% of return points (average 43.9%): a Dominance Ratio of 1.06 against 1.00, from 36 matches with statistics through October 16, 2026.

Sofia Costoulas: set records in 2026
Sets in 2026Sofia Costoulas
First sets won21-16 (57%)
Matches won after winning the first set16-4 (80%)
Matches won after losing the first set3-12 (20%)
Tiebreaks won3-4 (43%)
Deciding sets won6-5 (55%)

Completed matches in 2026 (walkovers excluded; retirements left out of the first-set conversions). A deciding set is the final set of a match that went the distance, best of 3 or 5 taken from the final score. Past results describe form; they are not a forecast.

Ranking

MeasureValue
Current rankNo. 159
Points471
Best rank stored (since September 28, 2026)No. 159 (September 28, 2026)

2026 record by surface

Sofia Costoulas — WTA — 2026 record by surface
SurfaceMatchesW-LWin rate
Hard2513-1252.0%
Clay126-650.0%
Grass10-10.0%

2026 serve and return

Sofia Costoulas — WTA — 2026 serve and return
MeasureValue
Aces per match3.0
Double faults per match2.9
First serves in61.8%
First-serve points won68.1%
Second-serve points won42.3%
Break points saved54.1%
Service points won59.2%
First-serve return points won36.2%
Second-serve return points won55.4%
Break points converted45.1%
Return points won43.4%
Total points won50.7%
Dominance Ratio1.1
Serve rating105.3
Return rating93.9
Games won52.2%
First sets won56.8%
Tiebreak sets won42.9%
Deciding sets won54.5%

Figures over 37 matches in 2026 with recorded statistics, the same as the StatsNext app and Stats Explorer.

Last 52 weeks: serve, return and Dominance Ratio

Sofia Costoulas — Last 52 weeks: serve, return and Dominance Ratio — October 16, 2026
MeasureSofia CostoulasTour average
Service points won59.2%56.1%
First serves in61.8%63.4%
First-serve points won68.1%62.7%
Second-serve points won42.3%45.3%
Break points saved54.1%51.8%
Return points won43.4%43.9%
First-serve return points won36.2%37.4%
Second-serve return points won55.4%54.8%
Break points converted45.1%48.2%
Total points won50.7%50.0%
Dominance Ratio1.061.00
Aces per match3.02.3
Double faults per match2.93.6
Serve rating105.3103.0
Return rating93.994.4
Tiebreaks won-lost3-4–
Deciding sets won-lost8-5–
Sofia Costoulas: last 52 weeks by surface
SurfaceW-LService pts wonReturn pts wonDR
Hard16-1359.7%42.5%1.05
Clay6-558.1%46.9%1.12

22-19 in 41 matches; rates from 36 matches with published statistics, through October 16, 2026. Last 52 weeks of stored singles matches. Dominance Ratio compares return points won with service points lost. Hold and break percentages are not published. Serve and return leaders

2026 season: Sofia Costoulas among players

Sofia Costoulas: 2026 season figures and place among players
FigureSofia CostoulasPlace
Games won52.282nd of 253
Total points won50.790th of 253
Dominance Ratio1.0657th of 253
Service points won59.243rd of 245
First serves in61.8156th of 245
First serve points won68.127th of 245
Second serve points won42.3215th of 245
Break points saved54.185th of 245
Aces3.070th of 245
Double faults2.974th of 245
Return points won43.4148th of 245
First serve return points won36.2167th of 245
Second serve return points won55.4108th of 245
Break points converted45.1198th of 245
Matches where the player won the first set56.881st of 253
Tiebreak sets won42.9176th of 253
Deciding sets won54.597th of 253

The same figures and places as the StatsNext Stats Explorer for the 2026 season, among the players with enough matches that season. 1st is the best (the lowest for figures where lower is better).

Recent matches

Sofia Costoulas: most recent matches stored by StatsNext
Tournament weekTournamentRoundOpponentResultScore
Oct 5, 2026Suzhou 125Round of 32Darya AstakhovaL (unfinished)3-6 0-0
Sep 28, 2026Jingshan 125Round of 16Sofya LansereL3-6 4-6
Sep 28, 2026Jingshan 125Round of 32Kristina MladenovicW6-2 7-5
Sep 21, 2026SingaporeRound of 32Tatiana ProzorovaL7-5 6-7(2) 2-6
Aug 30, 2026US OpenQualifyingElvina KalievaL6-3 3-6 4-6
Aug 30, 2026US OpenQualifyingJennifer RuggeriW7-5 6-4
Aug 3, 2026Warsaw 125Round of 32Gabriela KnutsonL2-6 4-6
Jul 26, 2026Vancouver 125Round of 16Maddison InglisL3-6 3-6
Jul 26, 2026Vancouver 125Round of 32Lizette CabreraW6-2 6-2
Jul 20, 2026PragueRound of 32Ayla AksuL6-2 3-6 4-6
Jul 20, 2026PragueQualifying round 2Ayla AksuW7-5 6-2
Jul 20, 2026PragueQualifying round 1Nao HibinoW6-7(4) 7-5 6-4
Jul 13, 2026AthensRound of 32Tereza ValentovaL1-6 2-6
Jun 29, 2026WimbledonQualifyingStorm HunterL5-7 4-6
Jun 1, 2026Bari 125Round of 16Tatiana PieriL (unfinished)6-1 3-2

Head-to-head

How to read these numbers

  • Matches are singles matches StatsNext stores; walkovers are listed but not counted in records.
  • The provider dates every match with its tournament’s start date, so dates are tournament weeks.
  • A round shows a dash when the provider’s round code cannot be mapped to a named round.

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