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Predictions graded

Mei Yamaguchi #257Japan1Sofia Kenin #125United States2

Sets 6-2 · 0-6 · 1-6Sat 17 Oct 2026, 06:20 Predictions gradedQ1Hard

Predictions6–555%

Edges2–167%

Player Profiles

Ranking advantageSofia Kenin · 132 places

Mei Yamaguchi

Japan

Yamaguchi, 27, is the right-hander in this matchup. Her career-best singles ranking is No. 242, reached on 5 May 2025.

Current ranking: #257
Peak ranking: #242 · 2025
Current age: 27
Preferred surface: Carpet
Hand: Right handed
Height: —

Sofia Kenin

United States

Reached a career-high No. 4 in March 2020. The ITF lists hard courts as her preferred surface; no verified active fitness issue in the requested recent-search window was found.

Current ranking: #125
Peak ranking: #4 · 2020
Current age: 27
Preferred surface: Clay
Hand: Right handed
Height: 170 cm

Quick Take

Pre-match view

Context last updated 16 Oct 2026, 22:22 · Europe/Bucharest

In the opening round of Osaka qualifying, a former Australian Open champion now ranked No.

125, Sofia Kenin, meets Japanese wildcard Mei Yamaguchi, No. 257. Both have won four of their last 15. Kenin's serve and their 2024 meeting make her the likelier winner, but 1.1 offers little. Yamaguchi at 7, over 20.5 games at 2.4 and over 2.5 sets at 3.5 each offer something.

Context

Kenin reached a career-high No. 4 in March 2020 and won the 2020 Australian Open, but she now sits at No. 125 and is seeded in the qualifying draw at a WTA 250. Her recent record reflects that slide: four wins in her last 15 matches, including a 6-0 6-3 loss to Kamilla Rakhimova in the opening round of Wuhan qualifying on 10 October. The ranking and results place her well below her peak, so her first-round task is against a lower-ranked opponent rather than the seeds she once met. The caveat is that her record at this level is far deeper than Yamaguchi's, so recent form and career pedigree point in opposite directions.
- Kenin is a former world No. 4 and 2020 Australian Open champion, listed at No. 125 and seeded ninth in the Japan Open singles qualifying draw.
- Her recent matches show four wins in 15, including the 6-0 6-3 defeat to Kamilla Rakhimova at Wuhan qualifying on 10 October.
ReportedSources checked 16 Oct 2026, 22:20 · Europe/Bucharest
Serving is Kenin's main advantage, yet the same stroke has been giving opponents regular openings.
Kenin's serve produces points but also free points: 64 double faults across 15 matches against 19 aces, and she saved 51.2% of the break points she faced in that window. For Yamaguchi, who has been the steadier starter in recent hard-court sets, that fault rate is a route to games even if the ranking gap and the 2024 result point the other way.
- Kenin's last 15 matches contain 64 double faults, an average of 4.3 per match, and 19 aces, an average of 1.3.
- Kenin saved 66 of 129 break points faced in that same 15-match window, 51.2%.
The setting is the WTA 250 Japan Open at Osaka's Morita Tennis Center Utsubo, where qualifying begins on 17 October and the main draw follows. Because this is a qualifying round rather than the main draw, the reward is a place in the main draw and both players still need one more win after this one. The pairing is unusual in that Kenin, a former world No. 4 and Grand Slam champion, is playing the opening day of qualifying against a Japanese wildcard. That contrast, rather than any edge, is what makes the fixture notable.
- The official tournament account names the four singles qualifying wildcards, including Yamaguchi, and confirms qualifying opens on 17 October at the WTA 250 Japan Open.
- Court 1 order-of-play listings place Yamaguchi against Kenin as the third match on 17 October.
ConfirmedSources checked 16 Oct 2026, 22:20 · Europe/Bucharest
Yamaguchi is ranked No. 257 and holds one of four singles qualifying wildcards at her home WTA 250, a route that keeps her near her career-high ranking of No. 242 set in May 2025. Her most recent tour-level appearance came at the WTA 500 in Singapore, where she entered as a lucky loser and lost in the first round to World No. 70 Alycia Parks . She has spent most of 2026 on the lower-level ITF circuit and her tour-level wins are scarce. The wildcard gives her a home crowd and a WTA 250 opportunity she would not hold on ranking alone.
- The official wildcard list names Yamaguchi among four singles qualifying wildcards for the Japan Open.
- The Japan Tennis Association rankings list has Yamaguchi at No. 257 on 12 October.
- At the Singapore WTA 500 she entered as a lucky loser and lost 6-4 6-3 to Alycia Parks in the first round .
ConfirmedSources checked 16 Oct 2026, 22:20 · Europe/Bucharest

BetBugs edges

Compare BetBugs' chances with the market's.

BetBugs probabilities

How likely BetBugs thought each outcome was.

Result1 of 1 landed

Signal quality Medium · Uncertainty band Slight lean · Not priced
The read
Kenin has the higher ranking, the stronger first serve and a straight-sets win in the only previous meeting.
- Kenin is ranked 125, Yamaguchi 257
- Kenin wins 63.8% of first-serve points on hard, Yamaguchi 57.7%
- Kenin won the pair's only meeting 6-4 6-4 in 2024
- Kenin has faced top-70 opposition in four of her last six matches
BetBugs · Match WinnerwonSofia KeninEstimated chance56%

Games2 of 5 landed

Signal quality Low · Uncertainty band Strong lean · Not priced
The read
A six-and-a-half game Kenin win requires a lopsided scoreline she has not produced recently.
- Kenin has not won by more than five games in any of her last six matches
- Kenin is 2-7 on hard
- Yamaguchi averages 45.4% of games won on hard
- Kenin has lost six of her last seven completed matches
BetBugs · Game HandicaplostMei Yamaguchi +6.5Estimated chance86%
Signal quality Low · Uncertainty band Strong lean · Not priced
The read
Kenin has mostly been losing or winning narrowly, so Yamaguchi starting three and a half games ahead covers much of her recent output.
- Kenin's last six hard matches gave game margins of -9, -6, 0, -8, +5, -3
- Kenin has one win in her last six completed matches
- Kenin is 2-7 on hard
- Yamaguchi has won at least seven games in four of her last six matches
BetBugs · Game HandicaplostMei Yamaguchi +3.5Estimated chance67%
Signal quality Medium · Uncertainty band Slight lean · Market price 2.40
The read
Both players' hard-court matches sit around or above the 20.5-game mark.
- Yamaguchi's hard-court matches average 20.9 games
- Kenin's hard-court matches average 22.6 games
- Kenin's hard-court sets average 9.8 games
- Yamaguchi has played two three-set matches in her last six
BetBugs · Total GameswonOver 20.5Estimated chance56%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
The pair's combined first-set average is around nine games, favouring the under.
- Kenin's hard-court first sets average 8.4 games
- Yamaguchi's hard-court first sets average 9.6 games
- Kenin has won only 3 of 9 hard-court first sets
- Yamaguchi's first sets average 4.9 games won to 4.7 lost
BetBugs · Set 1 Total GameswonUnder 9.5Estimated chance54%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Both players' second sets average close to ten games, and tiebreaks have appeared.
- Yamaguchi's hard-court second sets average 9.9 games
- Kenin's hard-court second sets average 9.8 games
- Yamaguchi has played four tiebreaks in 14 hard-court second sets
- Kenin has played two tiebreaks in 9 hard-court second sets
BetBugs · Set 2 Total GameslostOver 9.5Estimated chance53%

Sets2 of 3 landed

Signal quality Medium · Uncertainty band Lean · Not priced
The read
The large majority of both players' recent hard-court matches finished in two sets.
- 11 of Yamaguchi's 14 hard-court matches finished in straight sets
- 5 of Kenin's 9 hard-court matches finished in straight sets
- Combined, 16 of 23 tracked hard-court matches ended in straight sets
- Yamaguchi has only played three three-set matches in her hard-court sample
BetBugs · Total SetslostUnder 2.5Estimated chance60%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Kenin's serve and higher ranking give her a small edge in a set both players have found difficult.
- Kenin has won 3 of 9 hard-court second sets
- Yamaguchi has won only 4 of 14 hard-court second sets
- Kenin's second sets average 4.4 games won to 5.3 lost
- Kenin wins 63.8% of first-serve points on hard
BetBugs · Set 2 WinnerwonSofia KeninEstimated chance53%
Signal quality Low · Uncertainty band Near coin-flip · Not priced
The read
Yamaguchi has been the more reliable first-set starter, while Kenin has lost six of nine opening sets.
- Yamaguchi has won 7 of 14 hard-court first sets
- Kenin has won only 3 of 9 hard-court first sets
- Kenin's first sets average 3.3 games won to 5.1 lost
- Yamaguchi's first sets average 4.9 games won to 4.7 lost
BetBugs · Set 1 WinnerwonMei YamaguchiEstimated chance51%

Match stats1 of 1 landed

Signal quality Low · Uncertainty band Strong lean · Not priced
The read
Both players produce few aces, keeping the match total low.
- Yamaguchi averages 0.8 aces per hard-court match
- Kenin averages 1.2 aces per hard-court match
- Yamaguchi has 11 aces in 14 hard-court matches
- Kenin has 11 aces in 9 hard-court matches
BetBugs · Total Acesnot gradableUnder 2.5Estimated chance68%
Signal quality Low · Uncertainty band Strong lean · Not priced
The read
Most of both players' recent hard-court matches finished without a tiebreak.
- 5 of Yamaguchi's 14 hard-court matches had a tiebreak
- 2 of Kenin's 9 hard-court matches had a tiebreak
- Combined, only 7 of 23 tracked hard-court matches had a tiebreak
- Many recent losses for both players were lopsided
BetBugs · Tiebreak in MatchwonNoEstimated chance66%
Signal quality Medium · Uncertainty band Slight lean · Not priced
The read
Kenin's high double-fault rate combined with Yamaguchi's regular faults points above the line.
- Kenin averages 4.9 double faults per hard-court match
- Yamaguchi averages 2.4 double faults per hard-court match
- Kenin has 44 double faults in 9 hard-court matches
- Yamaguchi has 34 double faults in 14 hard-court matches
BetBugs · Total Double Faultsnot gradableOver 6.5Estimated chance56%

Head-to-Head

0-1 (1 meetings)

L6-4 6-4Mei Yamaguchi#257vSofia Kenin#125Oct 29, 2024

1 total meetings

Mei Yamaguchi

4W 11L

6-1 6-3#437Wushuang Zheng

6-4 6-3#64Alycia Parks

6-1 6-1#244Kyoka Okamura

6-1 6-4#647Ulrikke Eikeri

4-6 7-6(7) 6-1#470Tahlia Kokkinis

3-6 6-1 6-0#200Zhuoxuan Bai

6-2 6-1#253Dayeon Back

7-6(6) 6-4#102Polina Kudermetova

5-7 6-3 6-2#405Reina Goto

7-5 7-6(7)#621Rebecca Marino

7-5 6-3#235Greetje Minnen

6-4 6-4#318Ena Koike

6-2 7-6(3)#229Whitney Osuigwe

6-3 7-6(6)#304Zongyu Li

7-5 6-2#612Junhan Zhang

Sofia Kenin

4W 11L

6-0 6-3#69Kamilla Rakhimova

6-3 6-3#68Ashlyn Krueger

3-6 7-6(4) 6-4#98Alina Charaeva

6-3 6-1#4Jessica Pegula

6-2 7-6(6)#596Venus Williams

4-6 6-3 7-5#10Marta Kostyuk

1-6 6-3 6-3#136Eva Lys

7-5 1-6 6-2#106Lucrezia Stefanini

6-0 7-5#27Emma Navarro

6-2 4-6 7-6(3)#17Amanda Anisimova

7-6(4) 6-4#78Petra Marcinko

6-3 6-1#42Daria Snigur

6-2 4-6 6-3#72Viktorija Golubic

6-3 6-4#72Viktorija Golubic

6-4 6-4#158Elsa Jacquemot

Stat Battle

Last 15 match performance, compared side by side.

MYMei YamaguchiYamaguchi

Last 15

4–4

9 core stats · 1 even

Sofia KeninKeninSK

Dead-even recent form — the edges are in serve.

Serve · 2–3

1st Serve In61.5%+2.3pp63.8%

1st Serve Won56.8%+7.0pp63.8%

2nd Serve Won45.0%+3.7pp41.3%

Aces / Match0.7+0.61.3

Double Faults / Match2.61.7 fewer4.3

Return · 1–0

Return Pts Won43.3%+3.1pp40.2%

Pressure · 1–1

Break Pts Converted47.1%+8.8pp38.3%

Break Pts Saved44.8%+6.4pp51.2%

Points · 0–0 · 1 even

Total Pts Won47.9%—47.6%

Serve · 2–3

61.5%1st Serve In+2.3pp63.8%

56.8%1st Serve Won+7.0pp63.8%

45.0%2nd Serve Won+3.7pp41.3%

0.7Aces / Match+0.61.3

2.6Double Faults / Match1.7 fewer4.3

Return · 1–0

43.3%Return Pts Won+3.1pp40.2%

Pressure · 1–1

47.1%Break Pts Converted+8.8pp38.3%

44.8%Break Pts Saved+6.4pp51.2%

Points · 0–0 · 1 even

47.9%Total Pts Won—47.6%

Mei Yamaguchi

Sofia Kenin

Quick Take

Context

BetBugs edges

Over 20.5

Mei Yamaguchi

Over 2.5

Result1 of 1 landed

Games2 of 5 landed

Sets2 of 3 landed

Match stats1 of 1 landed

Head-to-Head

Mei Yamaguchi

Sofia Kenin

Stat Battle