Prediction of Issei Okamura vs Keita Koyama Head-to-Head, At

Wojtek Kolan

Our Predictions

H2H Records Career Stats

HEAD TO HEAD
I. Okamura vs K. Koyama

Issei Okamura

JPN

3

Win

Played

0

Win

Age

5'7" (170 cm)

Height

5'7" (170 cm)

870

C. Rank

Ret.

574

Best Rank

896

Total Titles

YTD Titles

Career Money

Right-Handed

Plays

Right-Handed

Keita Koyama

JPN

3

Win

Played

0

Win

Age

5'7" (170 cm)

Height

5'7" (170 cm)

870

C. Rank

Ret.

574

Best Rank

896

Total Titles

YTD Titles

Career Money

Right-Handed

Plays

Right-Handed

Head-to-head: Okamura 3 - 0 Koyama

They have played 5 sets in total, with Issei Okamura winning 5 and Keita Koyama winning 0. The last match between Issei Okamura and Keita Koyama was at the Toyota Challenger, 15-11-2014, Round: Q2, Surface: Carpet, with Issei Okamura getting the victory 6-3 7-5.

Players	Head To Head Match Wins
Okamura	3
Koyama	0

Last 3 H2H Matches:

(Q2) Toyota Challenger(11-15-14)

Stats

Issei Okamura

Keita Koyama

(R1) Japan F8(07-01-13)

Stats

Issei Okamura

Keita Koyama

(R2) Japan F4(04-01-13)

Stats

Issei Okamura

Keita Koyama

I. Okamura vs K. Koyama H2H Profile

I. Okamura	Stats	K. Koyama
$0	Career Prize Money	$0
47.67% (246-270)	Career Total W/L	43.59% (34-44)
2	Hard	0
1	Indoor	0
3	Total H2H Matches	0
0% (0-0)	YTD Win/Loss	0% (0-0)

I. Okamura vs K. Koyama Match Preview:

Second serve performance recent form: In recent form (last 6 months), Issei Okamura has won 40.72% of points on their second serve, while Keita Koyama has won 0%. There is a high correlation between this stat and match prediction accuracy.
Return game stats recent form: Return stats show Issei Okamura, in recent form, has won 41.01% of their opponent's second serve points, while Keita Koyama has won 0%. The same stats for first serve returns are 24.92% and 0% respectively and this has a high correlation to pick who is favored in this H2H matchup.
Under pressure analysis: Issei Okamura has saved 45.61% of breakpoints in recent form, whereas Keita Koyama has saved 0% which is a useful statistic for in-game betting predictions.
Performance overview: Over the last year Issei Okamura has won 46.34% of matches played (W/L 19/22), with Keita Koyama winning 0% (W/L 0/0) that gives us an overall head-to head prediction overview.
Best surface: Issei Okamura has their best career surface win % on Grass, winning 67% (W/L 4/2), and worse career win % on I.hard, winning 13% (W/L 2/13). Keita Koyama has their best career surface win % on Grass, winning 67% (W/L 3/2), and worse career win % on I.hard, winning 0% (W/L 0/1).
Player level: In the last year, Issei Okamura has played most of their matches on the Futures/Satellites/ITF tournaments $10K, winning 46.34% of matches (W/L 19/22), where as Keita Koyama has played most of their matches on the N/A, winning 0% of matches (W/L 0/0). 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 3 times before with Issei Okamura winning 2 times and Keita Koyama being victorious 0 times. They have played 5 sets in total, with Issei Okamura winning 5 and Keita Koyama winning 0.
The last match between Issei Okamura and Keita Koyama was at the Toyota Challenger, 15-11-2014, Round: Q2, Surface: Carpet, with Issei Okamura getting the victory 6-3 7-5.
Head to head match duration: In past head to head matches, the average match time between these players has been 0:22:12.
Opponent quality stats: Over the last 12 months, Issei Okamura has played against opponents with an average rank of 112.98 while Keita Koyama has played against players with an average rank of 0.
Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Issei Okamura has won 50% of deciding sets over the last 12 months, while Keita Koyama has won 0% in all matches played on tour.
Break point conversion: In recent form, Issei Okamura has converted 23.91% of breakpoint opportunities, and Keita Koyama has converted 0% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.

Issei Okamura vs Keita Koyama Editorial Preview By TennisTipster88.

I. Okamura vs K. Koyama H2H Stats Used In Our Predictions

I. Okamura	Stats	K. Koyama
2	H2H Matches Won	0
5	Sets Won	0
33	Games Won	21
2	Aces (Total)	2
1	Total Double Faults	2
0:22:12	Average Match Time	0:22:12
62% (36/58)	1st Serve %	58% (33/57)
83% (30/36)	1st Serve Win %	64% (21/33)
59% (13/22)	2nd Serve Win %	54% (13/24)
43% (3/7)	Break Pts Won %	100% (1/1)
40% (23/57)	Return Points Win %	26% (15/58)
100% (2/2)	Best‑of‑3 Win %	0% (0/2)
100% (3/3)	1st Set Won, Won Match	0% (0/0)
0% (0/3)	1st Set Won, Lost Match	0% (0/0)
0% (0/0)	1st Set Lost, Won Match	0% (0/3)

Recent Performance Stats

I. Okamura Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
M25 Takasaki - 15-09-2025
Q1 Jonathan MridhaJ. Mridha	L	6-3 7-6(5)	Stats
M25 Sapporo - 08-09-2025
Q1 Natsuki YamamotoN. Yamamoto	L	6-2 4-6 10-5	Stats
M25 Sapporo - 01-09-2025
R1 Naoya HondaN. Honda	L	6-3 6-2	Stats
Q3 Seiya NakanishiS. Nakanishi	W	4-6 7-6(5) 10-8	Stats
M15 Singapore - 11-08-2025
R1 Antoine BergerA. Berger	L	6-1 6-1	Stats

View All

K. Koyama Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Chinese Taipei F1 - 17-08-2015
R1 Tsung-Hua YangT. Yang	L	6-3 6-3	Stats
Japan F7 - 15-06-2015
R1 Jumpei YamasakiJ. Yamasaki	L	4-6 6-4 5-1 ret.	Stats
Japan F6 - 08-06-2015
R1 Masayoshi OnoM. Ono	L	4-6 6-2 6-1	Stats
Japan F5 - 01-06-2015
R1 Keisuke WatanukiK. Watanuki	L	6-1 6-1	Stats
Japan F3 - 23-03-2015
Q2 Ryota HisamatsuR. Hisamatsu	W	6-3 6-2	Stats

View All

I. Okamura vs K. Koyama Stats Breakdown Vs All H2H Opponents

I. Okamura	Stats	K. Koyama
47.67% (246/270)	YTD Win/Loss	43.59% (34/44)
48.10% (558/602)	Sets Win/Loss	44.32% (78/98)
49.25% (5292/5454)	Games Win/Loss	45.86% (726/857)
49.88% (203/204)	Hard Win/Loss	44.23% (23/29)
44.00% (33/42)	Clay Win/Loss	50.00% (7/7)
21.43% (6/22)	Indoor Hard W/L	14.29% (1/6)
66.67% (4/2)	Grass Win/Loss	60.00% (3/2)
0.13	Aces Per Game	0.01
676	Aces Total	9
0.19	Double Faults Per Game	0.02
997	Total Double Faults	18
1:7:51	Average Match Time	1st Match
165.43	Average Opponent Rank	114.27
61% (13952/22795)	1st Serve %	69% (362/528)
64% (8954/13952)	1st Serve Win %	64% (232/362)
47% (4192/8843)	2nd Serve Win %	52% (87/166)
42% (915/2180)	Break Points Won % (Total)	55% (22/40)
39% (8872/22653)	Return Points Win %	39% (196/507)
29.73% (11/26)	Challenger W/L	45.45% (5/6)
49.06% (235/244)	Futures W/L	43.28% (29/38)
47% (240/509)	Best of 3 Sets Win %	44% (33/75)
100% (2/2)	Best of 5 Sets Win %	50% (1/2)
48% (51/106)	Tiebreaks Win % (Total)	59% (10/17)
46% (61/132)	Deciding Set Win %	53% (10/19)
85% (261/221)	1st Set Won, Won Match	79% (33/26)
15% (261/40)	1st Set Won, Lost Match	21% (33/7)
9% (254/24)	1st Set Lost, Won Match	18% (45/8)