JapanWTA OsakaFinishedFeatured

Predictions graded

Mary Stoiana #114United States2Rinko Matsuda #436Japan0

Sets 6-3 · 7-6Sat 17 Oct 2026, 02:35 Predictions gradedQ1Hard

Predictions10–191%

Edges2–340%

Player Profiles

Ranking advantageMary Stoiana · 322 places

Mary Stoiana

United States

Limited reliable public profile information was found. Use the structured ranking and form data as the main current context.

Current ranking: #114
Peak ranking: —
Current age: 23
Preferred surface: I.hard
Hand: —
Height: —

Rinko Matsuda

Japan

Matsuda is ranked No. 470 and has built her 2026 season on the ITF World Tennis Tour, including a W35 semifinal in Kyoto in September. Limited reliable public profile information is available for her beyond her recent ITF results.

Current ranking: #436
Peak ranking: —
Current age: —
Preferred surface: I.hard
Hand: —
Height: —

Quick Take

Pre-match view

Context last updated 16 Oct 2026, 15:13 · Europe/Bucharest

Stoiana, sixth seed at No. 114, meets a home player 322 places below her in the first round of Osaka qualifying, and Matsuda's serve and 9-6 recent record mean the gap may not play out simply.

Stoiana is still the likelier winner. Four reviewed prices offer something: over 20.5 games at 2.6, Matsuda to win the match at 8, Matsuda to win the first set at 5.25, and over 2.5 sets at 3.5. Stoiana at 1.08 offers nothing.

Context

Women's qualifying at this event runs as a two-day competition before the main draw begins on 19 October, so a first-round loss ends the tournament for the loser with no main-draw fallback. Both players are competing for the same prize: a place in the main draw at the Utsubo complex in Osaka. No reporting identifies altitude, heat or a surface change that would alter how this specific first-round match plays. The qualifying draw itself is unusually deep for a WTA 250, with five entrants ranked inside the top 100.
- Women's qualifying 17-18 October, main draw 19-25 October
- Venue listed as Morita Tennis Center Utsubo, Osaka
- Match listed as Women's Singles Qualifying Round 1 on Court 2
- Official qualifying draw includes both players
ConfirmedSources checked 16 Oct 2026, 15:11 · Europe/BucharestMatch listing, qualifying first round, Court 2www.tennis.com · 16 Oct 2026
Stoiana is the sixth seed and ranked No. 114, 322 places above Matsuda, so the ranking gap is the default reading of this qualifying opener. Seeding fixes her position in the draw and marks her as one of the strongest entrants in a field headed by Sinja Kraus at No. 75. It provides no cushion in a two-day qualifying event, where a single loss removes her from the tournament. The seed position is entry status rather than evidence about how she will handle an opponent playing at home.
- Stoiana listed as seed 6 in the Osaka qualifying draw at No. 114
- Qualifying field headed by Sinja Kraus (75), Taylah Preston (86), Maya Joint (92), Claire Liu (96)
- Match listed as a qualifying first-round tie
ReportedSources checked 16 Oct 2026, 15:11 · Europe/BucharestStoiana qualifying entry and seedingwww.tennis.com · 16 Oct 2026
Reaching the quarterfinals of a WTA 250 in September 2026 was a step above Stoiana's usual ITF and WTA 125 level, and the run ended 6-4 6-2 against Paula Badosa, a former world No. 2. That result is the clearest recent evidence she can win main-draw matches at tour level, which matters because Osaka qualifying is itself a tour-level event. It says less about her form after a quiet October in which she lost a tight second-round match at a W100 event in California. The Badosa defeat also shows the level she still meets above the qualifying field.
- Stoiana reached the quarterfinal at the WTA 250 Sao Paulo Open in September 2026
- Badosa beat Stoiana 6-4 6-2 in the quarterfinal
- Badosa advanced from the match to the semifinal
ConfirmedSources checked 16 Oct 2026, 15:11 · Europe/Bucharest
Stoiana's 43-26 record and $411,643 in 2026 prize money mark her as a full-time tour player, and Fran Vittar has coached her since October 2025. A coaching arrangement that has run for a year points to continuity in her preparation rather than a late change before Osaka. The record spans ITF, WTA 125 and WTA 250 events, so it is not a like-for-like comparison with Matsuda's ITF-heavy schedule. Season totals describe the year to date and do not speak directly to current form.
- 2026 singles record of 43-26
- 2026 prize money of $411,643
- Coached by Fran Vittar since October 2025
ConfirmedSources checked 16 Oct 2026, 15:11 · Europe/BucharestWTA player profile, 2026 season record and coachingwww.wtatennis.com · 16 Oct 2026

BetBugs edges

Compare BetBugs' chances with the market's.

Positive edges · 4

BetBugs probabilities

How likely BetBugs thought each outcome was.

Result1 of 1 landed

Signal quality Medium · Uncertainty band Strong lean · Not priced
The read
Stoiana is the higher-ranked, more tour-tested player and her hard-court return numbers are stronger.
- WTA No. 114 against No. 436
- Hard-court record 9-6 with 57.1% of sets won
- Total points won 51.2% on hard
- Break points saved 56.7% on hard
BetBugs · Match WinnerwonMary StoianaEstimated chance68%

Games5 of 5 landed

Signal quality Low · Uncertainty band Strong lean · Not priced
The read
Stoiana has rarely won by nine games, making the bigger cushion likely to hold.
- Stoiana's largest recent hard-court margin is +6 games
- Stoiana's 15-match game differential is only +20
BetBugs · Game HandicapwonRinko Matsuda +8.5Estimated chance85%
Signal quality Low · Uncertainty band Lean · Not priced
The read
Stoiana's overall game margin is small, so Matsuda covering four and a half games is the more likely side.
- Stoiana's 15-match hard game differential is +20
- Stoiana's best recent margin is +6 games
BetBugs · Game HandicapwonRinko Matsuda +4.5Estimated chance62%
Signal quality Medium · Uncertainty band Lean · Market price 2.60
The read
Both players tend to play matches lasting more than twenty games, often with a dropped set.
- Stoiana matches average 22.8 games
- Matsuda matches average 23.4 games
- Both average over 2.3 sets per match
BetBugs · Total GameswonOver 20.5Estimated chance58%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Second sets for both players average above ten games, favouring the higher side.
- Stoiana's second set averages 10.3 games
- Matsuda's second set averages 10.3 games
BetBugs · Set 2 Total GameswonOver 9.5Estimated chance56%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Both opening-set averages sit below ten games, slightly favouring the lower side.
- Stoiana's set 1 game average is 9.4
- Matsuda's set 1 game average is 9.4
BetBugs · Set 1 Total GameswonUnder 9.5Estimated chance53%

Sets3 of 3 landed

Signal quality Medium · Uncertainty band Lean · Not priced
The read
Straight-set finishes are the norm for both players on hard courts.
- Stoiana's straight-set results total 10 of 15
- Matsuda's straight-set results total 8 of 13
BetBugs · Total SetswonUnder 2.5Estimated chance64%
Signal quality Medium · Uncertainty band Lean · Not priced
The read
Stoiana wins opening sets far more often than she loses them and starts with better game margins.
- Set 1 record 10-5 on hard
- Set 1 games 5.27 won against 4.13 lost
BetBugs · Set 1 WinnerwonMary StoianaEstimated chance62%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Stoiana remains the stronger player, though her second sets have been close.
- Set 2 record 7-8 on hard
- Overall match-winner share 68%
BetBugs · Set 2 WinnerwonMary StoianaEstimated chance57%

Match stats0 of 1 landed

Signal quality Low · Uncertainty band Lean · Not priced
The read
Tiebreaks appear in only about a third of their matches, so none is the more common outcome.
- Stoiana's tiebreak rate is 33%
- Matsuda's tiebreak rate is 38%
BetBugs · Tiebreak in MatchlostNoEstimated chance62%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
The two players' combined double-fault average is below the line.
- Stoiana averages 4.3 double faults per match
- Matsuda averages 1.8 per match
BetBugs · Total Double Faultsnot gradableUnder 6.5Estimated chance53%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Neither player serves many aces, keeping the combined total modest.
- Stoiana averages 1.3 aces per match on hard
- Matsuda averages 2.4 aces per match on hard
BetBugs · Total Acesnot gradableUnder 3.5Estimated chance52%

Mary Stoiana

9W 6L

7-5 7-5#250Julieta Pareja

6-3 6-4#289Hanna Chang

6-4 6-2#58Paula Badosa Gibert

7-6(5) 6-1#120Dominika Salkova

6-3 7-5#96Claire Liu

4-6 7-6(7) 6-3#138Julia Riera

6-3 6-2#155Jazmin Ortenzi

6-1 6-2#19Alexandra Eala

6-3 4-6 6-4#141Yue Yuan

6-7(5) 6-3 6-3#191Katie Swan

6-4 6-3#223Harmony Tan

6-2 7-6(4)#62Tereza Valentova

6-0 5-7 6-4#100Oksana Selekhmeteva

6-2 7-6(3)#144Veronika Erjavec

2-6 6-4 6-3#74Alina Korneeva

Rinko Matsuda

9W 6L

6-2 6-2#383Sijia Wei

7-6(6) 2-6 6-3#127Katarzyna Kawa

5-7 6-3 7-5#329Sakura Hosogi

6-2 6-3#638Ikumi Yamazaki

6-1 5-7 6-4#272Hiromi Abe

6-4 6-2#411Natsumi Kawaguchi

6-4 6-4#319Hina Inoue

6-3 7-6(2)#776Ayumi Miyamoto

6-2 7-6(4)#723Unknown Player

4-6 7-6(3) 7-5#329Sakura Hosogi

6-3 6-0#370Priska Madelyn Nugroho

6-2 6-4#686Kamonwan Yodpetch

6-3 4-6 6-1#815Meng Yi Chen

6-2 6-4#749Peangtarn Plipuech

7-6(9) 6-7(2) 6-4#506Ya-Yi Yang

Stat Battle

Last 15 match performance, compared side by side.

MSMary StoianaStoiana

Last 15

3–6

9 core stats · 0 even

Rinko MatsudaMatsudaRM

Rinko Matsuda carries the stronger recent form — Mary Stoiana's route runs through serve.

Serve · 1–4

1st Serve In60.4%+5.7pp66.1%

1st Serve Won62.8%+2.6pp60.2%

2nd Serve Won46.9%+3.3pp50.2%

Aces / Match1.3+1.02.3

Double Faults / Match4.32.5 fewer1.8

Return · 1–0

Return Pts Won45.9%+2.3pp43.6%

Pressure · 0–2

Break Pts Converted49.3%+3.6pp52.9%

Break Pts Saved56.7%+3.6pp60.3%

Points · 1–0

Total Pts Won51.2%+0.8pp50.4%

Serve · 1–4

60.4%1st Serve In+5.7pp66.1%

62.8%1st Serve Won+2.6pp60.2%

46.9%2nd Serve Won+3.3pp50.2%

1.3Aces / Match+1.02.3

4.3Double Faults / Match2.5 fewer1.8

Return · 1–0

45.9%Return Pts Won+2.3pp43.6%

Pressure · 0–2

49.3%Break Pts Converted+3.6pp52.9%

56.7%Break Pts Saved+3.6pp60.3%

Points · 1–0

51.2%Total Pts Won+0.8pp50.4%

Mary Stoiana #114United States2Rinko Matsuda #436Japan0

Player Profiles

Mary Stoiana

Rinko Matsuda

Quick Take

Context

BetBugs edges

Over 20.5

Rinko Matsuda

Over 2.5

Rinko Matsuda

Mary Stoiana 2-0

BetBugs probabilities

Result1 of 1 landed

Games5 of 5 landed

Sets3 of 3 landed

Match stats0 of 1 landed

Mary Stoiana

Rinko Matsuda

Stat Battle