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Predictions graded

Erika Andreeva #213Russia2Simona Waltert #98Switzerland0

Sets 6-3 · 6-1Wed 30 Sept 2026, 09:30 Predictions gradedSecond RoundHard

Predictions2–722%

Edges0–10%

Player Profiles

Ranking advantageSimona Waltert · 115 places

Erika Andreeva

Russia

The ITF lists Andreeva as a 22-year-old right-hander whose preferred surface is clay. Her reported singles career high is No. 65, reached in October 2024.

Current ranking: #213
Peak ranking: #65 · 2024
Current age: 22
Preferred surface: I.hard
Hand: Right handed
Height: —

Simona Waltert

Switzerland

Swiss right-hander, born 13 December 2000. Her reported career-high singles ranking was No. 81 in February 2026.

Current ranking: #98
Peak ranking: #81 · 2026
Current age: 25
Preferred surface: Carpet
Hand: Right handed
Height: 176 cm

Quick Take

Pre-match view

Context last updated 29 Sep 2026, 19:45 · Europe/Bucharest

Simona Waltert, 115 ranking places above Erika Andreeva, meets a qualifier who has already won three matches in Adana and is playing her fourth in five days.

Waltert's higher level and her three-set opening win make her the likely winner, with 5.6 double faults a match keeping the scoreline close. The quoted 1.8 on Waltert clears what it needs by a slim margin; the 2.0 on Andreeva does not.

Context

Andreeva had to win two qualifying matches to reach the main draw and has now played three matches in four days in Adana, the most recent a 6-3 6-2 win over Polina Iatcenko . That sequence gives her competitive rhythm on the venue's hard courts and follows a straight-sets loss to Reese Brantmeier in Porto on 22 September. The workload is contained rather than heavy, because Ilay Yoruk retired in the first qualifying match and the second was a two-set win, but it leaves Andreeva playing a fourth match in five days against a higher-ranked opponent.
- Erika Andreeva beat Ilay Yoruk 6-3 3-6 4-1 (retired) in the Adana first qualifying round on 26 September 2026.
- Erika Andreeva beat Elena Micic 6-2 6-2 in the Adana qualifying final on 27 September 2026.
- Erika Andreeva beat Polina Iatcenko 6-3 6-2 in the Adana opening round .
- Erika Andreeva lost in straight sets to Reese Brantmeier in the third round of the Porto event on 22 September 2026.
ConfirmedSources checked 29 Sep 2026, 19:43 · Europe/BucharestTennis Majors match pagewww.tennismajors.com · 29 Sep 2026
The Adana opener was Waltert's first competitive singles match in 18 days after the Montreux quarter-final defeat, and it required three sets after she lost the opening set. She recovered the match by taking the second set in a tiebreak and then closed out the decider 6-3, so this second-round fixture follows the longer of the two opening matches played . Both players have a one-day gap before this match, with Waltert's extra set the only confirmed difference in workload.
- Simona Waltert beat Anastasia Tikhonova 3-6 7-6(4) 6-3 in the Adana opening round .
- Simona Waltert lost 2-6 2-6 to Dalma Galfi in the Montreux quarter-final on 11 September 2026.
- Waltert's preceding singles match before Adana was that Montreux quarter-final.
ConfirmedSources checked 29 Sep 2026, 19:43 · Europe/BucharestTennis Majors match pagewww.tennismajors.com · 29 Sep 2026
Waltert's first serve does far more work than her second: she has won 63.9% of first-serve points (445 of 696) but only 43.9% on the second (205 of 467) in the same 15-match sample.
That gap hands back points in bunches, and Andreeva arrives having won her last two Adana matches in straight sets, so Waltert may have to win longer rallies rather than rely on free service points. The counts cover 15 matches through her 29 September 2026 first-round win, and the 8-7 record in that sample shows the pattern has not always been decisive.
- Waltert has served 84 double faults in a 15-match sample ending with her 29 September 2026 Adana first-round win, an average of 5.6 per match.
- She has hit 38 aces in the same 15 matches, 2.5 per match.
- She has won 43.9% of second-serve points (205 of 467) and 63.9% of first-serve points (445 of 696) across those 15 matches.
Waltert's most recent completed block of matches came on the clay in Montreux, ending with the quarter-final loss to Dalma Galfi on 11 September. Adana is a hard-court event, and she has already banked one completed hard-court match at the venue by beating Tikhonova in three sets . Andreeva has arrived through a hard-court stretch in Porto and Adana, so the surface change is a one-sided adjustment for Waltert in this fixture.
- Simona Waltert played three matches on clay in Montreux between 8 and 11 September 2026.
- Simona Waltert's Adana opening round against Anastasia Tikhonova was played on a hard court.
- Erika Andreeva's matches in Porto on 22 September 2026 and in Adana on 26, 27 and were all played on hard courts.
ConfirmedSources checked 29 Sep 2026, 19:43 · Europe/BucharestTennis Majors match pagewww.tennismajors.com · 29 Sep 2026

BetBugs edges

Compare BetBugs' chances with the market's.

BetBugs probabilities

How likely BetBugs thought each outcome was.

Result0 of 1 landed

Signal quality Medium · Uncertainty band Lean · Market price 1.80
The read
Waltert sits 115 ranking places higher and has already won a main-draw match in Adana, while Andreeva has lost four of her six hard-court matches in this stretch.
- Waltert is ranked 98; Andreeva is ranked 213
- Waltert is 2-3 on hard courts this window with 61 games won and 70 lost
- Waltert came from a set down to beat Tikhonova 3-6 7-6(4) 6-3 in the Adana first round
- Andreeva is 2-4 on hard courts this window with 74 games won and 70 lost
BetBugs · Match WinnerlostSimona WaltertEstimated chance58%

Games1 of 4 landed

Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Both players' recent hard-court matches have run long, with Waltert averaging over 26 games and Andreeva 24.
- Andreeva's six hard-court matches average 24 total games
- Waltert's five hard-court matches average 26.2 total games
- Waltert averages 136.9 minutes per hard-court match
- Four of Andreeva's six hard-court matches contained a tiebreak
BetBugs · Total GameslostOver 23.5Estimated chance56%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Second sets have been the longer set for both players on hard courts, averaging above ten games.
- Andreeva's second sets average 10.33 total games on hard
- Waltert's second sets average 10.6 total games on hard
- Andreeva has had two second-set tiebreaks in six hard-court matches
BetBugs · Set 2 Total GameslostOver 9.5Estimated chance56%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Both players' opening sets on hard have typically needed more than nine games to settle.
- Andreeva's first sets average 9.83 total games on hard
- Waltert's first sets average 10.4 total games on hard
- Andreeva has had one first-set tiebreak in six hard-court matches
BetBugs · Set 1 Total GameslostOver 9.5Estimated chance55%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Neither player has been winning matches by wide game margins on hard courts, so even a narrow Andreeva defeat would cover this line.
- Andreeva's six hard-court matches produced game margins of +7, +8, -1, -3, -3 and -4
- Waltert's hard-court matches show margins of +1, -2 and -5 in the visible rows
- Waltert's only visible hard-court win was 16-15 on games
BetBugs · Game HandicapwonErika Andreeva +1.5Estimated chance54%

Sets1 of 2 landed

Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Andreeva has split first sets on this surface while Waltert has lost four of five, including her Adana opener 3-6.
- Andreeva has won three of six opening sets on hard courts
- Waltert has won one of five opening sets on hard courts
- Andreeva averages 5.0 first-set games won to 4.83 lost
BetBugs · Set 1 WinnerwonErika AndreevaEstimated chance52%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Waltert's overall edge in ranking keeps her marginally ahead, but her second sets on hard have been close to even.
- Waltert has won two of five second sets on hard courts
- Waltert won the second set 7-6(4) in her Adana opener
- Waltert averages 4.8 second-set games won to 5.8 lost on hard
BetBugs · Set 2 WinnerlostSimona WaltertEstimated chance52%

Match stats0 of 1 landed

Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Andreeva's hard-court matches have frequently gone to tiebreaks, and Waltert's own opener included one.
- Four of Andreeva's six hard-court matches contained a tiebreak
- Two of Waltert's five hard-court matches contained a tiebreak
- Both players' second sets average over ten games on hard
BetBugs · Tiebreak in MatchlostYesEstimated chance56%

Prediction history

Simona Waltert: 6/8 recent winner projections matched

6 of 8 comparable winner projections favouring Simona Waltert matched the recorded result. This is a limited recent sample, not a guarantee for this match.

Recent evidence for Simona Waltert8 matches

Date / competitionMatch resultPredictedActualResult

14 Jul·WTA Iasi

#142Katarzyna Kawa2-0#81Simona Waltert

BetBugsSimona Waltert to win·72%

Missed

14 Jul 2026

WTA Iasi

#142Katarzyna Kawa2-0#81Simona Waltert

Simona Waltert to win

72%probability

Katarzyna Kawa won

Missed

10 Jul·WTA Bastad

#107Kaitlin Quevedo0-2#90Simona Waltert

BetBugsSimona Waltert to win·65%

Matched

10 Jul 2026

WTA Bastad

#107Kaitlin Quevedo0-2#90Simona Waltert

Simona Waltert to win

65%probability

Simona Waltert won

Matched

9 Jul·WTA Bastad

#90Simona Waltert2-0#143Leyre Romero Gormaz

BetBugsSimona Waltert to win·58%

Matched

9 Jul 2026

WTA Bastad

#90Simona Waltert2-0#143Leyre Romero Gormaz

Simona Waltert to win

58%probability

Simona Waltert won

Matched

8 Jul·WTA Bastad

#90Simona Waltert2-0#619Aneta Laboutkova

BetBugsSimona Waltert to win·82%

Matched

8 Jul 2026

WTA Bastad

#90Simona Waltert2-0#619Aneta Laboutkova

Simona Waltert to win

82%probability

Simona Waltert won

Matched

20 Jun·WTA Eastbourne

#52Petra Marcinko2-1#88Simona Waltert

BetBugsSimona Waltert to win·62%

Missed

20 Jun 2026

WTA Eastbourne

#52Petra Marcinko2-1#88Simona Waltert

Simona Waltert to win

62%probability

Petra Marcinko won

Missed

Previous match context available

Erika Andreeva

7W 8L

6-3 6-2#160Polina Iatcenko

6-2 6-2#278Elena Micic 6-3 3-6 4-1 ret.#757Ilay Yoruk

6-3 7-6(5)#292Reese Brantmeier

6-7(4) 6-4 6-4#211Viktoria Hruncakova

6-4 7-6(5)#370Mariam Bolkvadze

6-4 4-6 7-6(5)#177Mai Hontama

6-4 6-3#108Fiona Ferro

6-2 6-0#346Lina Gjorcheska

6-4 6-1#95Sinja Kraus

6-4 2-6 6-2#183Mia Ristic

6-2 6-1#192Despina Papamichail

7-6(4) 7-5#89Anna Blinkova

6-2 6-2#112Kayla Day

6-0 6-3#161Yexin Ma

Simona Waltert

8W 7L

3-6 7-6(4) 6-3#256Anastasia Tikhonova

6-2 6-2#150Dalma Galfi

2-6 6-1 6-3#192Despina Papamichail

7-6(4) 3-6 6-2#167Rebeka Masarova

4-6 7-6(5) 6-3#204Nadia Podoroska

7-5 6-3#234Fiona Crawley

6-3 6-2#3Jessica Pegula

5-7 6-4 6-2#81Petra Marcinko

5-7 6-4 7-6(3)#52Mayar Sherif

6-1 6-4#133Katarzyna Kawa

7-5 7-5#59Paula Badosa Gibert

7-5 6-2#78Kaitlin Quevedo

6-2 6-1#146Leyre Romero Gormaz

6-2 6-0#404Aneta Laboutkova

6-4 6-1#133Katarzyna Kawa

Stat Battle

Last 15 match performance, compared side by side.

EAErika AndreevaAndreeva

Last 15

5–1

9 core stats · 3 even

Simona WaltertWaltertSW

Erika Andreeva carries the stronger recent form — Simona Waltert's route runs through serve.

Serve · 4–1

1st Serve In62.1%+2.3pp59.8%

1st Serve Won63.1%+0.8pp63.9%

2nd Serve Won46.1%+2.2pp43.9%

Aces / Match3.0+0.52.5

Double Faults / Match2.33.3 fewer5.6

Return · 0–0 · 1 even

Return Pts Won44.7%—45.3%

Pressure · 1–0 · 1 even

Break Pts Converted48.0%—47.8%

Break Pts Saved59.7%+9.3pp50.4%

Points · 0–0 · 1 even

Total Pts Won50.7%—50.7%

Serve · 4–1

62.1%1st Serve In+2.3pp59.8%

63.1%1st Serve Won+0.8pp63.9%

46.1%2nd Serve Won+2.2pp43.9%

3.0Aces / Match+0.52.5

2.3Double Faults / Match3.3 fewer5.6

Return · 0–0 · 1 even

44.7%Return Pts Won—45.3%

Pressure · 1–0 · 1 even

48.0%Break Pts Converted—47.8%

59.7%Break Pts Saved+9.3pp50.4%

Points · 0–0 · 1 even

50.7%Total Pts Won—50.7%