Player data updated: 2026-10-19 10:34 UTC

Kenichi Hirai

JPN Age 76 Plays: Right-Handed ATP Tour years active: 1971–1981

Kenichi Hirai represented Japan on the ATP Tour and reached a career high of No. 180. TennisDB's records show a singles record of 7–32 and no singles titles.

Peak singles rank

180 (Jul 29, 1974)

Elo peak

1504 (4th percentile)

Singles record

7–32 (17.9%)

Singles titles

Prize money

$557

Records cover recorded main-draw singles results in TennisDB's ATP event archive, including credited walkovers; qualifying is shown separately below.

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ATP Matches full match log →

Kenichi Hirai's recent, live, and scheduled ATP matches
Opponent	Score	Result	H2H	Match Data	Date	Round	Tournament	Category	Surface
Joel Bailey	4-6 2-6	L	H2H	Match data	Oct 21, 1981*	R64	Japan Open	ATP 250	Clay
Hank Pfister #36	1-6 2-6	L	H2H	Match data	Nov 16, 1978*	R32	Taipei	ATP 250	Carpet
Terry Moor #62	2-6 7-5 4-6	L	H2H	Match data	Oct 26, 1978*	R32	Japan Open	ATP 250	Clay
John Whitlinger	0-6 6-7	L	H2H	Match data	Nov 2, 1977*	R64	Japan Open	ATP 250	Clay
Dick Crealy #40	9-8 4-6 2-6	L	H2H	Match data	Jun 8, 1977*	R64	Eastbourne Open	ATP 250	Grass

Rivals all rivalries →

Kenichi Hirai's most-played ATP rivals
Opponent	L	M	Last Played	H2H
Tom Gorman	2	2	Nov 3, 1976	H2H
Joel Bailey	1	1	Oct 21, 1981	H2H
Hank Pfister	1	1	Nov 16, 1978	H2H
Terry Moor	1	1	Oct 26, 1978	H2H
John Whitlinger	1	1	Nov 2, 1977	H2H

Career Results

Kenichi Hirai career results by season
Season	Age	W	L	M	Win %	Start Rank	End Rank
1971	21	1	7	8	12.5%	—	—
1972	22	2	3	5	40.0%	—	—
1973	23	1	5	6	16.7%	217	226
1974	24	1	4	5	20.0%	237	228
1975	25	0	4	4	0.0%	231	252
1976	26	2	4	6	33.3%	254	187
1977	27	0	2	2	0.0%	220	220
1978	28	0	2	2	0.0%	332	496
1981	31	0	1	1	0.0%	—	—
Career		7	32	39	17.9%	—	—

Career Results by Surface

Kenichi Hirai career results by season and surface
Season	Age	Hard				Clay				Grass				Carpet				Total
Season	Age	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
1971	21	1	4	5	20.0%	0	2	2	0.0%	0	1	1	0.0%	—	—	—	—	1	7	8	12.5%
1972	22	1	1	2	50.0%	0	1	1	0.0%	1	1	2	50.0%	—	—	—	—	2	3	5	40.0%
1973	23	0	2	2	0.0%	1	2	3	33.3%	0	1	1	0.0%	—	—	—	—	1	5	6	16.7%
1974	24	1	1	2	50.0%	0	1	1	0.0%	0	2	2	0.0%	—	—	—	—	1	4	5	20.0%
1975	25	—	—	—	—	0	2	2	0.0%	0	1	1	0.0%	0	1	1	0.0%	0	4	4	0.0%
1976	26	0	1	1	0.0%	1	2	3	33.3%	1	1	2	50.0%	—	—	—	—	2	4	6	33.3%
1977	27	—	—	—	—	0	1	1	0.0%	0	1	1	0.0%	—	—	—	—	0	2	2	0.0%
1978	28	—	—	—	—	0	1	1	0.0%	—	—	—	—	0	1	1	0.0%	0	2	2	0.0%
1981	31	—	—	—	—	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	1	1	0.0%
Career	—	3	9	12	25.0%	2	13	15	13.3%	2	8	10	20.0%	0	2	2	0.0%	7	32	39	17.9%

Career Results by Opponent Rank

Kenichi Hirai career results by season and opponent rank
Season	Age	1-10				11-30				31-100				100+				Total
Season	Age	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
1973	23	0	0	—	—	0	1	1	0.0%	0	1	1	0.0%	0	0	—	—	0	2	2	0.0%
1974	24	0	1	1	0.0%	0	0	—	—	0	0	—	—	0	0	—	—	0	1	1	0.0%
1975	25	0	1	1	0.0%	0	1	1	0.0%	0	0	—	—	0	0	—	—	0	2	2	0.0%
1976	26	0	0	—	—	0	1	1	0.0%	0	0	—	—	0	0	—	—	0	1	1	0.0%
1977	27	0	0	—	—	0	0	—	—	0	1	1	0.0%	0	0	—	—	0	1	1	0.0%
1978	28	0	0	—	—	0	0	—	—	0	2	2	0.0%	0	0	—	—	0	2	2	0.0%
Career		0	2	2	0.0%	0	3	3	0.0%	0	4	4	0.0%	0	0	—	—	0	9	9	0.0%

Opponent ranking data available for 9/39 (23.1%) of Kenichi Hirai's ATP main draw matches.

Advanced Stats

Kenichi Hirai advanced statistics by season
Season	Age	Elo	P+	Serve+	Return+	PD	TPW%	Hard Elo	Clay Elo	Grass Elo	Set Win %	Set Margin	Dec. Set	Tiebreak	Pressure+	Schedule
1971	21	1444	96.8	—	—	—	—	+64	—	—	11.1%	-2.11	1–0	0–2	—	+0.41
1972	22	1467	108.1	—	—	—	—	—	—	—	45.5%	-0.27	0–1	—	—	-0.18
1973	23	1460	113.9	—	—	—	—	—	+51	—	31.3%	-1.13	0–2	0–1	—	-0.37
1974	24	1439	100.0	—	—	—	—	—	—	—	33.3%	-1.42	0–2	0–1	—	+0.48
1975	25	1413	115.4	—	—	—	—	—	—	—	10.0%	-2.60	—	0–1	—	-0.20
1976	26	1439	111.6	—	—	—	—	—	+37	—	35.7%	-0.43	—	0–1	—	+0.34
1977	27	1421	99.6	—	—	—	—	—	—	—	20.0%	-2.40	0–1	0–1	—	+0.09
1978	28	1414	105.5	—	—	—	—	—	—	—	20.0%	-2.60	0–1	—	—	-0.11
1981	31	1400	96.5	—	—	—	—	—	—	—	0.0%	-3.00	—	—	—	+0.23
Career		1504	112.0	—	—	—	—	+64	+44	—	25.8%	-1.50	1–7 (13%)	0–7 (0%)	88.6	+1.77

Tournament Results by Category

Grand Slams

Kenichi Hirai Grand Slams results by season
Season	Age	AO	W	USO	W-L Win %
1971	21	—	—	R128	0–1 (0%)
1973	23	—	R128	—	0–1 (0%)
1974	24	R64	—	—	0–1 (0%)
1975	25	R64	—	—	0–1 (0%)
1976	26	—	R64	—	1–1 (50%)
W-L		0–2 (0%)	1–2 (33%)	0–1 (0%)	1–5 (17%)

ATP 500

Kenichi Hirai ATP 500 results by season
Season	Age	CIN	W-L Win %
1971	21	R64	0–1 (0%)
W-L		0–1 (0%)	0–1 (0%)

ATP 250

Kenichi Hirai ATP 250 results by season
Season	Age	GST	NAP	TKY	BEC	COL	DUT	LOS	MAN	MAN	MER	EAS	TKY	SAC	SYD	TAI	W-L Win %
1971	21	—	R64	—	—	—	R16	R64	—	—	R64	—	—	R64	—	—	1–5 (17%)
1972	22	R32	—	—	R64	—	R32	—	R64	—	—	—	—	—	—	—	2–3 (40%)
1973	23	R32	—	R32	—	—	—	—	—	R32	—	—	R32	—	—	—	1–4 (20%)
1974	24	—	—	R32	—	—	R32	—	—	—	—	—	—	—	R64	—	1–3 (25%)
1975	25	R32	—	R32	—	—	—	—	—	—	—	—	—	—	—	—	0–2 (0%)
1976	26	R16	—	R64	—	R32	—	—	—	—	—	—	—	—	—	—	1–3 (25%)
1977	27	—	—	R64	—	—	—	—	—	—	—	R64	—	—	—	—	0–2 (0%)
1978	28	—	—	—	—	—	—	—	—	—	—	—	R32	—	—	R32	0–2 (0%)
1981	31	—	—	R64	—	—	—	—	—	—	—	—	—	—	—	—	0–1 (0%)
W-L		1–4 (20%)	0–1 (0%)	2–6 (25%)	0–1 (0%)	0–1 (0%)	2–3 (40%)	0–1 (0%)	1–0 (100%)	0–1 (0%)	0–1 (0%)	0–1 (0%)	0–2 (0%)	0–1 (0%)	0–1 (0%)	0–1 (0%)	6–25 (19%)

Results show the best round reached per tournament and season.

ATP Ranking History full ranking history →

Career high

180

Career-high date

Jul 29, 1974

First Top 100

—

First Top 50

—

First Top 20

—

First Top 10

—

Ranking History Matrix

Kenichi Hirai ranking history by month and season
Season	Age	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	23	—	—	—	—	—	—	—	—	—	—	224	226
1974	24	—	—	237	230	233	226	180	187	190	—	194	228
1975	25	231	—	243	257	247	249	—	—	—	—	—	252
1976	26	—	—	—	—	—	254	—	—	—	—	—	187
1977	27	—	—	—	—	—	—	220	—	—	—	—	—
1978	28	322	—	—	—	—	—	429	—	—	—	—	496
1979	29	—	—	—	—	—	—	—	—	—	—	—	511
1983	33	743	—	—	—	—	—	—	—	—	—	—	—
1984	34	661	—	—	—	—	612	610	631	620	603	592	609
1985	35	604	619	630	628	648	—	—	—	—	—	—	—

Similar Players

Other ATP players with comparable peak level, era, career record, and career scale.

Kenichi Hirai's most statistically similar ATP players
Player	Country	Peak ranking	Peak Elo	M	W	L	Win %	Prize money	Years	Rivalries	Match log
Peter Campbell	AUS	#179	1,500	31	6	25	19.4%	—	1968–1981	Rivalries	Match log
John Holladay	USA	#167	1,500	27	5	22	18.5%	—	1974–1977	Rivalries	Match log
Bill Lofgren	USA	#169	1,500	25	4	21	16.0%	—	1973–1978	Rivalries	Match log
Mike Wayman	GBR	#171	1,535	18	4	14	22.2%	—	1974–1978	Rivalries	Match log
Tim Garcia	USA	#175	1,502	25	3	22	12.0%	—	1977–1980	Rivalries	Match log
Robert Reininger	AUT	#182	1,500	41	9	32	22.0%	$57,642	1973–1983	Rivalries	Match log
Spencer Segura	USA	#193	1,500	22	3	19	13.6%	—	1974–1976	Rivalries	Match log
Hubertus Hoyt	USA	#195	1,500	21	3	18	14.3%	—	1976–1979	Rivalries	Match log
Glenn Petrovic	USA	#199	1,517	12	2	10	16.7%	—	1977–1981	Rivalries	Match log
Patrice Hagelauer	FRA	#190	1,536	12	3	9	25.0%	—	1974–1977	Rivalries	Match log
Enrique Caviglia	ARG	#190	1,500	9	1	8	11.1%	—	1973–1977	Rivalries	Match log
Fernando Maynetto	PER	#175	1,544	29	7	22	24.1%	$1,121	1978–1982	Rivalries	Match log

Frequently Asked Questions

How old is Kenichi Hirai?: Kenichi Hirai is 76 years old, born on March 19, 1950.
Which country does Kenichi Hirai represent?: Kenichi Hirai represents Japan in TennisDB's ATP records.
Is Kenichi Hirai left-handed or right-handed?: Kenichi Hirai plays right-handed.
How many Grand Slam singles titles has Kenichi Hirai won?: Kenichi Hirai has not won a Grand Slam singles title.
How many Masters 1000 titles has Kenichi Hirai won?: TennisDB does not group any of Kenichi Hirai's titles under the modern Masters 1000 category.
What is Kenichi Hirai's highest ATP ranking?: Kenichi Hirai's career-high ATP singles ranking is world No. 180, first achieved on July 29, 1974.
What is Kenichi Hirai's career win-loss record?: Kenichi Hirai has a career ATP singles record of 7 wins and 32 losses (17.9%).
How much career prize money has Kenichi Hirai earned?: Kenichi Hirai has earned at least $557 in career prize money from professional tennis.
Which seasons of Kenichi Hirai's career appear in TennisDB?: Kenichi Hirai appears in TennisDB's ATP main-tour match records from 1971 through 1981.
Who has Kenichi Hirai faced most often?: Kenichi Hirai's most frequent opponent is Tom Gorman, with a head-to-head record of 0–2 across 2 meetings.