Player data updated: 2026-09-01 02:16 UTC

Osamu Ishiguro

JPN Died Nov 9, 2016 (age 80) Plays: Right-Handed ATP Tour years active: 1971–1975

Osamu Ishiguro represented Japan on the ATP Tour and reached a career-high ranking of No. 228. In TennisDB's records, Osamu Ishiguro finished with a career record of 0–6 and no singles titles.

Peak ranking

228 (Mar 10, 1975)

Elo peak

1500 (3rd percentile)

Career record

0–6 (0.0%)

Career titles

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 →

Osamu Ishiguro's recent, live, and scheduled ATP matches
Opponent	Score	Result	H2H	Match Data	Date	Round	Tournament	Category	Surface
Barry Phillips Moore	3-6 2-6	L	—	Match data	Apr 17, 1975*	R32	Tokyo Indoor	ATP 250	Carpet
Robert Rheinberger	6-3 3-6 4-6	L	H2H	Match data	Oct 15, 1974*	R64	Tokyo	ATP 250	Hard
Antonio Zugarelli	2-6 4-6	L	H2H	Match data	Apr 11, 1974*	R32	Japan Open	ATP 250	Clay
Jim Mcmanus	1-6 2-6	L	H2H	Match data	Nov 1, 1973*	R32	Hong Kong Open	ATP 250	Hard
Paul Kronk	6-3 6-7 6-7	L	—	Match data	Oct 10, 1973*	R32	Osaka	ATP 250	Hard

Rivals all rivalries →

Osamu Ishiguro's most-played ATP rivals
Opponent	L	M	Last Played	H2H
Barry Phillips Moore	1	1	Apr 17, 1975	—
Robert Rheinberger	1	1	Oct 15, 1974	H2H
Antonio Zugarelli	1	1	Apr 11, 1974	H2H
Jim Mcmanus	1	1	Nov 1, 1973	H2H
Paul Kronk	1	1	Oct 10, 1973	—

Career Results

Osamu Ishiguro career results by season
Season	Age	L	M	Win %	Start Rank	End Rank
1971	34	1	1	0.0%	—	—
1973	36	2	2	0.0%	—	—
1974	37	2	2	0.0%	297	318
1975	38	1	1	0.0%	323	373
Career		6	6	0.0%	—	—

Career Results by Surface

Osamu Ishiguro 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	34	—	—	—	—	—	—	—	—	0	1	1	0.0%	—	—	—	—	0	1	1	0.0%
1973	36	0	2	2	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	0	2	2	0.0%
1974	37	0	1	1	0.0%	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	2	2	0.0%
1975	38	—	—	—	—	—	—	—	—	—	—	—	—	0	1	1	0.0%	0	1	1	0.0%
Career	—	0	3	3	0.0%	0	1	1	0.0%	0	1	1	0.0%	0	1	1	0.0%	0	6	6	0.0%

Advanced Stats

Osamu Ishiguro 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	34	1488	100.3	—	—	—	—	—	—	—	0.0%	-3.00	—	—	—	+0.03
1973	36	1458	94.1	—	—	—	—	—	—	—	20.0%	-1.60	0–1	0–2	—	+0.46
1974	37	1433	98.3	—	—	—	—	—	—	—	20.0%	-1.60	0–1	—	—	+0.30
1975	38	1426	96.0	—	—	—	—	—	—	—	0.0%	-3.50	—	—	—	+0.03
Career		1500	94.9	—	—	—	—	—	—	—	13.3%	-2.13	0–2	0–2	—	+13.67

Tournament Results by Category

Grand Slams

Osamu Ishiguro Grand Slams results by season
Season	Age	AO	W-L Win %
1971	34	R64	0–1 (0%)
W-L		0–1 (0%)	0–1 (0%)

ATP 250

Osamu Ishiguro ATP 250 results by season
Season	Age	HKG	TKY	OSA	W-L Win %
1973	36	R32	—	R32	0–2 (0%)
1974	37	—	R32	—	0–1 (0%)
1975	38	—	R32	—	0–1 (0%)
W-L		0–1 (0%)	0–2 (0%)	0–1 (0%)	0–4 (0%)

Results show the best round reached per tournament and season.

ATP Ranking History full ranking history →

Career high

228

Career-high date

Mar 10, 1975

First Top 100

—

First Top 50

—

First Top 20

—

First Top 10

—

Ranking History Matrix

Osamu Ishiguro ranking history by month and season
Season	Age	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1974	37	—	—	—	—	—	—	—	—	—	—	297	318
1975	38	323	—	228	383	333	330	—	—	—	—	—	373

Similar Players

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

Osamu Ishiguro's most statistically similar ATP players
Player	Country	Peak Rank	Peak Elo	M	W	L	Win %	Years	Match Log
Alberto Martorell	ESP	225	1,500	9	1	8	11.1%	1968–1976	Match log
Roberto Lombardi	ITA	221	1,500	16	2	14	12.5%	1968–1980	Match log
Jan Zabrodsky	SWE	217	1,500	16	2	14	12.5%	1971–1976	Match log
Salvador Cabeza	ESP	245	1,513	7	1	6	14.3%	1971–1977	Match log
Alexander Marcial	PHI	262	1,514	9	1	8	11.1%	1968–1978	Match log
Hugo Varela	ARG	210	1,500	6	1	5	16.7%	1970–1978	Match log
Mark Shires	USA	264	1,524	8	1	7	12.5%	1972–1975	Match log
Victor Eke	AUS	249	1,500	9	1	8	11.1%	1972–1979	Match log
Greg Braun	AUS	269	1,516	19	2	17	10.5%	1970–1979	Match log
Guillermo Oropez	USA	222	1,531	8	3	5	37.5%	1968–1977	Match log
Fernando Gentil	BRA	222	1,516	13	3	10	23.1%	1968–1976	Match log
Nicolas Kelaidis	GRE	244	1,500	18	2	16	11.1%	1972–1981	Match log

Frequently Asked Questions

Which country does Osamu Ishiguro represent?: Osamu Ishiguro represents Japan in TennisDB's ATP records.
Is Osamu Ishiguro left-handed or right-handed?: Osamu Ishiguro plays right-handed.
How many Grand Slams has Osamu Ishiguro won?: Osamu Ishiguro has not won a Grand Slam title.
How many Masters 1000 titles has Osamu Ishiguro won?: TennisDB does not group any of Osamu Ishiguro's titles under the modern Masters 1000 category.
What is Osamu Ishiguro's highest ATP ranking?: Osamu Ishiguro's career-high ATP singles ranking is world No. 228, first achieved on March 10, 1975.
What is Osamu Ishiguro's career win-loss record?: Osamu Ishiguro has a career ATP singles record of 0 wins and 6 losses (0.0%).
Which seasons of Osamu Ishiguro's career appear in TennisDB?: Osamu Ishiguro appears in TennisDB's ATP main-tour match records from 1971 through 1975.
Who has Osamu Ishiguro faced most often?: Osamu Ishiguro's most frequent opponent is Barry Phillips Moore, with a head-to-head record of 0–1 across 1 meeting.