Prediction of Ayumi Oka vs Erika Sema Head-to-Head, At

Wojtek Kolan

Our Predictions

H2H Records Career Stats

HEAD TO HEAD
A. Oka vs E. Sema

Ayumi Oka

JPN

1

Win

Played

1

Win

Age

Height

Ret.

C. Rank

604

297

Best Rank

114

Total Titles

YTD Titles

Career Money

$117.4K

Plays

Erika Sema

JPN

1

Win

Played

1

Win

Age

Height

Ret.

C. Rank

604

297

Best Rank

114

Total Titles

YTD Titles

Career Money

$117.4K

Plays

Head-to-head: Oka 1 - 1 Sema

They have played 4 sets in total, with Ayumi Oka winning 2 and Erika Sema winning 2. The last match between Ayumi Oka and Erika Sema was at the Toyota, 21-11-2011, Round: R1, Surface: Carpet, with Ayumi Oka getting the victory 6-2 6-2.

Players	Head To Head Match Wins
Oka	1
Sema	1

Last 2 H2H Matches:

(R1) Toyota(11-21-11)

Stats

Ayumi Oka

Erika Sema

(R1) Makinohara(10-17-11)

Stats

Erika Sema

Ayumi Oka

A. Oka vs E. Sema H2H Profile

A. Oka	Stats	E. Sema
$0	Career Prize Money	$117,356
48.87% (108-113)	Career Total W/L	52.41% (501-455)
1	Indoor	1
2	Titles	11
1	Total H2H Matches	1
0% (0-0)	YTD Win/Loss	0% (0-0)

A. Oka vs E. Sema Match Preview:

Second serve performance recent form: In recent form (last 6 months), Ayumi Oka has won 0% of points on their second serve, while Erika Sema has won 35.88%. There is a high correlation between this stat and match prediction accuracy.
Return game stats recent form: Return stats show Ayumi Oka, in recent form, has won 0% of their opponent's second serve points, while Erika Sema has won 53.53%. The same stats for first serve returns are 0% and 35.48% respectively and this has a high correlation to pick who is favored in this H2H matchup.
Under pressure analysis: Ayumi Oka has saved 0% of breakpoints in recent form, whereas Erika Sema has saved 48.35% which is a useful statistic for in-game betting predictions.
Performance overview: Over the last year Ayumi Oka has won 0% of matches played (W/L 0/0), with Erika Sema winning 52.94% (W/L 27/24) that gives us an overall head-to head prediction overview.
Best surface: Ayumi Oka has their best career surface win % on Clay, winning 56% (W/L 9/7), and worse career win % on Grass, winning 0% (W/L 0/1). Erika Sema has their best career surface win % on Hard, winning 56% (W/L 389/318), and worse career win % on Grass, winning 42% (W/L 15/21).
Player level: In the last year, Ayumi Oka has played most of their matches on the N/A, winning 0% of matches (W/L 0/0), where as Erika Sema has played most of their matches on the Challengers/ITF tournaments > $10K, winning 51.28% of matches (W/L 20/19). When comparing stats between players to predict the favorite, it is of course all relative to the event level they have been playing at.
Direct H2H matches: They have played 2 times before with Ayumi Oka winning 1 times and Erika Sema being victorious 1 times. They have played 4 sets in total, with Ayumi Oka winning 2 and Erika Sema winning 2.
The last match between Ayumi Oka and Erika Sema was at the Toyota, 21-11-2011, Round: R1, Surface: Carpet, with Ayumi Oka getting the victory 6-2 6-2.
Head to head match duration: In past head to head matches, the average match time between these players has been 0:0:0.
Opponent quality stats: Over the last 12 months, Ayumi Oka has played against opponents with an average rank of 0 while Erika Sema has played against players with an average rank of 408.1.
Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Ayumi Oka has won 0% of deciding sets over the last 12 months, while Erika Sema has won 56% in all matches played on tour.
Break point conversion: In recent form, Ayumi Oka has converted 0% of breakpoint opportunities, and Erika Sema has converted 43.35% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.

Ayumi Oka vs Erika Sema Editorial Preview By TennisTipster88.

A. Oka vs E. Sema H2H Stats Used In Our Predictions

A. Oka	Stats	E. Sema
1	H2H Matches Won	1
2	Sets Won	2
17	Games Won	16
0:0:0	Average Match Time	0:0:0
50% (1/2)	Best‑of‑3 Win %	50% (1/2)
100% (1/1)	1st Set Won, Won Match	100% (1/1)
0% (0/1)	1st Set Won, Lost Match	0% (0/1)
0% (0/1)	1st Set Lost, Won Match	0% (0/1)

Recent Performance Stats

A. Oka Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Nishi-Tama - 26-03-2012
R1 Yumi NakanoY. Nakano	L	6-7(3) 6-3 6-4	Stats
Kofu - 19-03-2012
R2 Ting-Fei JuanT. Juan	W	6-3 5-7 6-4	Stats
R1 Yumi MiyazakiY. Miyazaki	W	3-6 6-4 6-2	Stats
QF Hiroko KuwataH. Kuwata	L	4-6 7-5 6-3	Stats
Sydney - 13-02-2012
Q2 Nicola GeuerN. Geuer	L	6-1 6-0	Stats

View All

E. Sema Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
W100 Takasaki - 17-11-2025
Q3 Jana KolodynskaJ. Kolodynska	L	6-0 6-3	Stats
Q1 Kisa YoshiokaK. Yoshioka	W	6-1 4-6 6-4	Stats
W35 Hamamatsu - 03-11-2025
R1 Sara SaitoS. Saito	L	6-1 6-2	Stats
W35 Brisbane - 27-10-2025
SF Natsumi KawaguchiN. Kawaguchi	L	6-1 7-5	Stats
QF Elena MicicE. Micic	W	w/o	Stats

View All

A. Oka vs E. Sema Stats Breakdown Vs All H2H Opponents

A. Oka	Stats	E. Sema
49.09% (108/112)	YTD Win/Loss	52.46% (501/454)
48.82% (249/261)	Sets Win/Loss	52.01% (1136/1048)
49.82% (2317/2334)	Games Win/Loss	51.54% (10209/9600)
44.05% (37/47)	Hard Win/Loss	55.02% (389/318)
56.25% (9/7)	Clay Win/Loss	44.68% (42/52)
52.10% (62/57)	Indoor Hard W/L	46.61% (55/63)
0.00% (0/1)	Grass Win/Loss	41.67% (15/21)
0	Aces Per Game	0.04
0	Aces Total	379
0	Double Faults Per Game	0.17
5	Total Double Faults	1681
1st Match	Average Match Time	1st Match
566.59	Average Opponent Rank	589.1
60% (34/57)	1st Serve %	73% (25647/35272)
53% (18/34)	1st Serve Win %	57% (14550/25647)
57% (13/23)	2nd Serve Win %	43% (4138/9625)
40% (2/5)	Break Points Won % (Total)	49% (2304/4686)
38% (25/65)	Return Points Win %	47% (16706/35557)
0% (0/0)	Slam W/L	33.33% (8/16)
0.00% (0/1)	Masters W/L	40.00% (2/3)
0.00% (0/2)	Main Tour W/L	39.13% (18/28)
39.66% (46/70)	Challenger W/L	52.84% (419/374)
61.39% (62/39)	Futures W/L	62.07% (54/33)
49% (107/217)	Best of 3 Sets Win %	52% (484/935)
0% (0/0)	Best of 5 Sets Win %	100% (3/3)
45% (18/40)	Tiebreaks Win % (Total)	44% (72/163)
55% (40/73)	Deciding Set Win %	48% (140/290)
81% (107/87)	1st Set Won, Won Match	84% (504/425)
19% (107/20)	1st Set Won, Lost Match	15% (504/77)
19% (113/22)	1st Set Lost, Won Match	15% (450/68)