ChinaWTA JingshanFinishedFeatured

Predictions graded

Sofya Lansere #270Russia2Sofia Costoulas #158Belgium0

Sets 6-3 · 6-4Thu 1 Oct 2026, 03:39 Predictions gradedSecond RoundHard

Predictions6–555%

Edges3–260%

Player Profiles

Ranking advantageSofia Costoulas · 112 places

Sofya Lansere

Russia

Born 29 September 2000 and plays right-handed.

Current ranking: #270
Peak ranking: —
Current age: 25
Preferred surface: —
Hand: Right handed
Height: —

Sofia Costoulas

Belgium

Reached a reported career-high ranking of No. 134 in March 2026. Recent public results show active competition through mid-August.

Current ranking: #158
Peak ranking: #134 · 2026
Current age: —
Preferred surface: —
Hand: Right handed
Height: —

Quick Take

Pre-match view

Context last updated 30 Sep 2026, 01:25 · Europe/Bucharest

Fifth seed against an unseeded opponent 122 places lower: Costoulas is the likelier winner, but her hard-court record this window is 7-8 and Lansere arrives off a 6-3 6-0 win.

Costoulas at 1.29 is not worth taking. Three quoted prices do carry value: Lansere to win at 3.75, Lansere to take the first set at 3.2, and over 19.5 games at 1.85.

Context

Costoulas has built her hard-court results this window on fast starts rather than late dominance.
Lansere began her first-round win with a 6-3 set, so an early Costoulas lead would not settle the match on its own; the opening set is still the stage where the seeded player's edge has been largest, and the stage where four of her 15 opponents got away.
- Costoulas won the opening set in 11 of her 15 tracked hard-court matches between 20 July and 29 September 2026.
- Across those first sets she averages 5.53 games won to 3.73 lost, with two tiebreaks in the sample.
Both players spent the week before Jingshan in the doubles draw of a WTA 500 event in Singapore, so each arrives with tour-level match play but almost no singles preparation on the Chinese hard courts. Costoulas's run covered four matches and ended two days before her Jingshan opener, while Lansere's ended one round earlier against a seeded pair. Doubles form at a different venue transfers only indirectly to singles, so the main value is that neither player comes in idle.
- Costoulas and Talia Gibson lost the Singapore Open doubles semifinal 7-6(4) 6-3 to Erin Routliffe and Aldila Sutjiadi .
- Lansere and Tatiana Prozorova beat Ulrikke Eikeri and Quinn Gleason in the Singapore Open doubles first round and were drawn against third seeds Miyu Kato and Ellen Perez in the quarterfinals.
- Kato and Perez advanced to the semifinals, where Tang Qianhui and Xu Yifan eliminated them in a match tiebreak.
ConfirmedSources checked 30 Sep 2026, 01:23 · Europe/Bucharest
Costoulas's most recent appearance at WTA 500 level ended against a player who then beat Eala and Wang Xinyu on the way to a first career WTA semifinal, which recasts the defeat as a close loss to an opponent in career-best form rather than a routine early exit. She did surrender a set lead in that match, and the result carries no information about her level this week, where she has since won her opening match in straight sets.
- Tatiana Prozorova beat Sofia Costoulas 5-7 7-6(2) 6-2 in the Singapore Open first round .
- The win was Prozorova's first in a WTA 500 main draw and came after nearly three hours of play.
- Prozorova defeated Alexandra Eala in the round of 16 and Wang Xinyu in the quarterfinals to reach her first career WTA semifinal.
ConfirmedSources checked 30 Sep 2026, 01:23 · Europe/Bucharest
This explains how Lansere's week in Singapore ended: her doubles partnership reached the quarterfinals and her partner was then withdrawn from the singles event under concussion protocols. Nothing in the reports attributes any physical problem to Lansere, who played and won her Jingshan opener three days later, so the episode is background to her preparation rather than a constraint on her availability for this match.
- Prozorova was struck during a Singapore Open doubles match alongside Lansere and took a medical timeout at the time.
- She passed most of the concussion assessment but failed the balance component and was medically withdrawn from the singles semifinal .
- The withdrawal ended what had been her best tournament, a first career WTA semifinal.
ConfirmedSources checked 30 Sep 2026, 01:23 · Europe/Bucharest

BetBugs edges

Compare BetBugs' chances with the market's.

Positive edges · 3

BetBugs probabilities

How likely BetBugs thought each outcome was.

Result0 of 1 landed

Signal quality Medium · Uncertainty band Lean · Not priced
The read
Costoulas has the stronger ranking, the fifth seeding and by far the larger recent hard-court sample, with serve numbers that hold up over a full match.
- Costoulas is 7-8 across 15 tracked hard-court matches, winning 52.2% of games and 50.8% of points
- Lansere is 4-10 in her last 14 tracked matches and 1-1 in two completed hard-court matches
- Costoulas is ranked 159 and seeded fifth at this WTA 125 event; Lansere is unseeded at 281
- Costoulas beat Mladenovic 6-2 7-5 in round one, while Lansere beat Zavatska 6-3 6-0
BetBugs · Match WinnerlostSofia CostoulasEstimated chance63%

Games4 of 5 landed

Signal quality Low · Uncertainty band Strong lean · Not priced
The read
Costoulas has rarely produced the six-game winning margin this line needs, given how even her games totals are.
- Costoulas's hard-court game margin is +14 over 15 matches
- Her second-set games average is roughly even at 4.67 won to 4.6 lost
- Lansere has won two of her last six completed matches, all by competitive margins
BetBugs · Game HandicapwonSofya Lansere +5.5Estimated chance75%
Signal quality Low · Uncertainty band Strong lean · Not priced
The read
The most likely routes for Costoulas, a three-set win or a competitive straight-set win, leave Lansere within five games.
- Costoulas lost 8 of 15 hard-court matches, most by narrow or negative margins
- Five of her matches went to a deciding set
- Lansere's only hard-court loss was by four games
BetBugs · Game HandicapwonSofya Lansere +4.5Estimated chance69%
Signal quality Low · Uncertainty band Lean · Not priced
The read
Costoulas's wins are not usually lopsided enough for a four-game margin, and Lansere has shown she can keep matches close or win them.
- Costoulas's cumulative hard-court game margin is +14 across 15 matches
- Five of her 15 hard-court matches were three-set losses, which rarely produce a four-game margin
- Lansere won her opener by nine games
BetBugs · Game HandicapwonSofya Lansere +3.5Estimated chance62%
Signal quality Medium · Uncertainty band Lean · Market price 1.85
The read
Costoulas's hard-court matches have regularly run past 20 games, with a third set needed in a third of them.
- Costoulas's 15 hard-court matches average 21.6 total games and 2.33 sets
- Five of those 15 matches reached a deciding set
- Costoulas's average match duration is 103 minutes
BetBugs · Total GameslostOver 19.5Estimated chance60%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Close second sets for Costoulas make a 10-game set slightly more likely than not.
- Costoulas's second sets average 9.27 total games on hard
- Her second-set record is 8-7, so these sets are usually close
- Lansere's second sets have averaged 8 games across two hard-court matches
BetBugs · Set 2 Total GameswonOver 9.5Estimated chance52%

Sets1 of 3 landed

Signal quality Medium · Uncertainty band Lean · Not priced
The read
Costoulas has been a notably strong starter on hard courts, taking the first set in nearly three-quarters of her matches.
- Costoulas has won the opening set in 11 of 15 hard-court matches
- She averages 5.53 games won to 3.73 lost in first sets
- Lansere is 1-1 in first sets across two hard-court matches
BetBugs · Set 1 WinnerlostSofia CostoulasEstimated chance64%
Signal quality Medium · Uncertainty band Lean · Market price 1.36
The read
Straight-set finishes are the most common outcome for both players in this window, including in their opening matches here.
- Ten of Costoulas's 15 hard-court matches finished in straight sets
- Both first-round matches here were won 2-0
- Lansere's hard-court matches averaged exactly 2.0 sets
BetBugs · Total SetswonUnder 2.5Estimated chance63%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Costoulas's second sets are far closer than her first sets, so her advantage here is much smaller.
- Costoulas is 8-7 in second sets on hard, averaging 4.67 games won to 4.6 lost
- Lansere is 1-1 in second sets over two hard-court matches
- Costoulas has won 54.3% of all sets played on this surface
BetBugs · Set 2 WinnerlostSofia CostoulasEstimated chance56%

Match stats1 of 1 landed

Signal quality Low · Uncertainty band Strong lean · Not priced
The read
Breaks have come regularly enough for these players that sets rarely extend to 6-6.
- 11 of Costoulas's 15 hard-court matches had no tiebreak
- Neither of Lansere's two hard-court matches had a tiebreak
- Both first-round matches here finished without a tiebreak
BetBugs · Tiebreak in MatchwonNoEstimated chance72%

Prediction history

Sofia Costoulas: 5/8 recent winner projections matched

5 of 8 comparable winner projections favouring Sofia Costoulas matched the recorded result. This is a limited recent sample, not a guarantee for this match.

Recent evidence for Sofia Costoulas8 matches

Date / competitionMatch resultPredictedActualResult

29 Jul·WTA Vancouver

#304Lizette Cabrera0-2#155Sofia Costoulas

BetBugsSofia Costoulas to win·58%

Matched

29 Jul 2026

WTA Vancouver

#304Lizette Cabrera0-2#155Sofia Costoulas

Sofia Costoulas to win

58%probability

Sofia Costoulas won

Matched

20 Jul·WTA Prague

#214Ayla Aksu2-1#157Sofia Costoulas

BetBugsSofia Costoulas to win·65%

Missed

20 Jul 2026

WTA Prague

#214Ayla Aksu2-1#157Sofia Costoulas

Sofia Costoulas to win

65%probability

Ayla Aksu won

Missed

19 Jul·WTA Prague

#157Sofia Costoulas2-0#214Ayla Aksu

BetBugsSofia Costoulas to win·55%

Matched

19 Jul 2026

WTA Prague

#157Sofia Costoulas2-0#214Ayla Aksu

Sofia Costoulas to win

55%probability

Sofia Costoulas won

Matched

23 Jun·WTA Wimbledon

#185Storm Hunter2-0#157Sofia Costoulas

BetBugsSofia Costoulas to win·58%

Missed

23 Jun 2026

WTA Wimbledon

#185Storm Hunter2-0#157Sofia Costoulas

Sofia Costoulas to win

58%probability

Storm Hunter won

Missed

3 Jun·WTA Foggia

#505Tatiana Pieri0-2#144Sofia Costoulas

BetBugsSofia Costoulas to win·65%

Matched

3 Jun 2026

WTA Foggia

#505Tatiana Pieri0-2#144Sofia Costoulas

Sofia Costoulas to win

65%probability

Sofia Costoulas won

Matched

Previous match context available

Sofya Lansere

5W 10L

6-3 6-0#266Katarina Zavatska 6-4 6-4#361Aoi Ito

6-2 6-2#284Aurora Zantedeschi

6-2 4-6 6-1#298Lisa Zaar

5-2 ret.#888Danka Kovinic

4-6 6-2 7-6(3)#298Lisa Zaar

6-1 6-1—Andjela Colic

6-4 6-2#197Barbora Palicova

7-6(4) 6-4#364Margaux Rouvroy

2-6 6-4 6-4#209Irene Burillo

6-1 3-6 6-1#178Lola Radivojevic

6-2 7-6(4)#149Elizara Yaneva

4-6 6-1 6-4#268Elena Malygina

6-2 6-0#205Rositsa Dencheva

6-4 1-6 6-4#352Jenny Lim

Sofia Costoulas

7W 8L

6-2 7-5#825Kristina Mladenovic 5-7 7-6(2) 6-2#123Tatiana Prozorova

6-3 6-7(3) 6-3#317Hina Inoue

1-6 6-1 6-3#233Zhuoxuan Bai

6-1 6-2#358Kristiana Sidorova

7-6(4) 6-3#758Unknown Player

3-6 6-3 6-4#117Elvina Kalieva

7-5 6-4#235Jennifer Ruggeri

7-6(5) 6-0#250Matilde Jorge

6-3 6-3—Sofia Camila Rojas

6-1 6-1—Eva Alvarez Sande

6-2 6-4#164Gabriela Andrea Knutson

6-2 6-2#318Lizette Cabrera

6-3 6-3#140Maddison Inglis

2-6 6-3 6-4#210Ayla Aksu

Stat Battle

Last 15 match performance, compared side by side.

SLSofya LansereLansere

Last 15

4–5

9 core stats · 0 even

Sofia CostoulasCostoulasSC

Sofia Costoulas carries the stronger recent form — Sofya Lansere's route runs through pressure.

Serve · 1–4

1st Serve In61.9%+7.5pp54.4%

1st Serve Won56.4%+12.7pp69.1%

2nd Serve Won36.0%+13.5pp49.5%

Aces / Match1.2+1.52.7

Double Faults / Match6.03.7 fewer2.3

Return · 1–0

Return Pts Won48.4%+6.1pp42.3%

Pressure · 2–0

Break Pts Converted47.7%+3.2pp44.5%

Break Pts Saved52.9%+2.3pp50.6%

Points · 0–1

Total Pts Won48.5%+2.3pp50.8%

Serve · 1–4

61.9%1st Serve In+7.5pp54.4%

56.4%1st Serve Won+12.7pp69.1%

36.0%2nd Serve Won+13.5pp49.5%

1.2Aces / Match+1.52.7

6.0Double Faults / Match3.7 fewer2.3

Return · 1–0

48.4%Return Pts Won+6.1pp42.3%

Pressure · 2–0

47.7%Break Pts Converted+3.2pp44.5%

52.9%Break Pts Saved+2.3pp50.6%

Points · 0–1

48.5%Total Pts Won+2.3pp50.8%

Sofya Lansere

Sofia Costoulas

Quick Take

Context

BetBugs edges

Over 19.5

Sofya Lansere

Sofya Lansere

Under 2.5

Sofia Costoulas 2-0

Result0 of 1 landed

Games4 of 5 landed

Sets1 of 3 landed

Match stats1 of 1 landed

Sofya Lansere

Sofia Costoulas

Stat Battle