Player data updated: 2026-09-14 13:26 UTC

Thomaz Koch

BRA Age 81 Plays: Left-Handed ATP Tour years active: 1968–1983

Thomaz Koch represented Brazil on the ATP Tour and reached a career high of No. 24. TennisDB's records show a singles record of 199–157 and 6 singles titles.

Peak singles rank

24 (Dec 23, 1974)

Elo peak

1880 (80th percentile)

Singles record

199–157 (55.9%)

Singles titles

Prize money

$2,532

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 →

Thomaz Koch's recent, live, and scheduled ATP matches
Opponent	Score	Result	H2H	Match Data	Date	Round	Tournament	Category	Surface
Fernando Roese	5-7 4-6	L	H2H	Match data	Nov 25, 1983*	R16	Bahia	ATP 250	Hard
Javier Restrepo	6-3 6-2	W	—	Match data	Nov 24, 1983*	R32	Bahia	ATP 250	Hard
Carlos Kirmayr #59	6-7 4-6 3-6	L	H2H	Match data	Nov 25, 1982*	R32	Bahia	ATP 250	Carpet
Kevin Curren #31	1-6 5-7	L	H2H	Match data	Sep 23, 1982*	R32	Los Angeles-2 Wct	ATP 250	Carpet
Rod Frawley #46	4-6 1-6	L	H2H	Match data	May 4, 1982*	R64	Forest Hills Wct	ATP 250	Clay

Rivals all rivalries →

Thomaz Koch's most-played ATP rivals
Opponent	W	L	M	Last Played	H2H
Arthur Ashe	3	5	8	Aug 8, 1975	H2H
Clark Graebner	3	5	8	Jun 21, 1972	H2H
Manuel Orantes	3	4	7	Jun 28, 1974	H2H
Ilie Nastase	0	6	6	Aug 16, 1975	H2H
Cliff Richey	3	3	6	Jun 18, 1975	H2H

Singles Titles (6)

Thomaz Koch singles titles by season and category
Season	Age	Singles titles	GS	Masters 1000 including documented historical predecessor categories	ATP 500 including documented historical predecessor categories	ATP 250 including documented historical predecessor categories	ATP Finals	Tournaments
1968	23	1	—	—	—	1	—	Quebec City
1969	24	3	—	—	—	3	—	Caracas, Kingston, Washington Open
1971	26	1	—	—	—	1	—	Caracas
1972	27	1	—	—	—	1	—	Manchester
Total		6	—	—	—	6	—

Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.

Career Results

Thomaz Koch career results by season
Season	Age	W	L	M	Win %	Start Rank	End Rank
1968	23	29	17	46	63.0%	—	—
1969	24	34	18	52	65.4%	—	—
1970	25	18	15	33	54.6%	—	—
1971	26	24	13	37	64.9%	—	—
1972	27	19	17	36	52.8%	—	—
1973	28	5	6	11	45.5%	204	204
1974	29	22	12	34	64.7%	210	24
1975	30	19	21	40	47.5%	24	62
1976	31	15	8	23	65.2%	43	58
1977	32	1	6	7	14.3%	58	94
1979	34	4	7	11	36.4%	98	85
1980	35	7	9	16	43.8%	89	49
1981	36	0	2	2	0.0%	56	90
1982	37	1	5	6	16.7%	—	—
1983	38	1	1	2	50.0%	185	185
Career		199	157	356	55.9%	—	—

Career Results by Surface

Thomaz Koch 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 %
1968	23	9	5	14	64.3%	18	9	27	66.7%	1	2	3	33.3%	1	1	2	50.0%	29	17	46	63.0%
1969	24	12	6	18	66.7%	12	3	15	80.0%	1	4	5	20.0%	9	5	14	64.3%	34	18	52	65.4%
1970	25	12	7	19	63.2%	—	—	—	—	1	2	3	33.3%	5	6	11	45.5%	18	15	33	54.5%
1971	26	6	4	10	60.0%	6	3	9	66.7%	5	3	8	62.5%	7	3	10	70.0%	24	13	37	64.9%
1972	27	4	5	9	44.4%	2	4	6	33.3%	7	3	10	70.0%	6	5	11	54.5%	19	17	36	52.8%
1973	28	4	4	8	50.0%	1	1	2	50.0%	0	1	1	0.0%	—	—	—	—	5	6	11	45.5%
1974	29	4	2	6	66.7%	12	7	19	63.2%	3	2	5	60.0%	3	1	4	75.0%	22	12	34	64.7%
1975	30	1	4	5	20.0%	12	11	23	52.2%	0	2	2	0.0%	6	4	10	60.0%	19	21	40	47.5%
1976	31	3	1	4	75.0%	4	4	8	50.0%	—	—	—	—	8	3	11	72.7%	15	8	23	65.2%
1977	32	0	2	2	0.0%	1	1	2	50.0%	0	1	1	0.0%	0	2	2	0.0%	1	6	7	14.3%
1979	34	1	3	4	25.0%	3	4	7	42.9%	—	—	—	—	—	—	—	—	4	7	11	36.4%
1980	35	0	1	1	0.0%	3	4	7	42.9%	1	3	4	25.0%	3	1	4	75.0%	7	9	16	43.8%
1981	36	0	1	1	0.0%	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	2	2	0.0%
1982	37	—	—	—	—	1	3	4	25.0%	—	—	—	—	0	2	2	0.0%	1	5	6	16.7%
1983	38	1	1	2	50.0%	—	—	—	—	—	—	—	—	—	—	—	—	1	1	2	50.0%
Career	—	57	46	103	55.3%	75	55	130	57.7%	19	23	42	45.2%	48	33	81	59.3%	199	157	356	55.9%

Career Results by Opponent Rank

Thomaz Koch 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	28	0	0	—	—	0	1	1	0.0%	0	1	1	0.0%	0	0	—	—	0	2	2	0.0%
1974	29	1	1	2	50.0%	0	1	1	0.0%	3	0	3	100.0%	0	0	—	—	4	2	6	66.7%
1975	30	1	2	3	33.3%	1	1	2	50.0%	5	3	8	62.5%	0	0	—	—	7	6	13	53.8%
1977	32	0	0	—	—	0	1	1	0.0%	1	1	2	50.0%	0	0	—	—	1	2	3	33.3%
1979	34	0	1	1	0.0%	0	0	—	—	0	4	4	0.0%	0	0	—	—	0	5	5	0.0%
1980	35	0	3	3	0.0%	0	1	1	0.0%	3	2	5	60.0%	0	0	—	—	3	6	9	33.3%
1981	36	0	0	—	—	0	1	1	0.0%	0	1	1	0.0%	0	0	—	—	0	2	2	0.0%
1982	37	0	0	—	—	0	0	—	—	1	4	5	20.0%	0	0	—	—	1	4	5	20.0%
Career		2	7	9	22.2%	1	6	7	14.3%	13	16	29	44.8%	0	0	—	—	16	29	45	35.6%

Opponent ranking data available for 45/356 (12.6%) of Thomaz Koch's ATP main draw matches.

Advanced Stats

Thomaz Koch 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
1968	23	1672	129.3	—	—	—	—	-67	+38	-163	61.0%	+1.12	5–9 (36%)	—	—	+0.27
1969	24	1796	127.3	—	—	—	—	+69	+56	-315	60.8%	+0.65	10–7 (59%)	—	—	+3.64
1970	25	1804	127.6	—	—	—	—	+60	—	—	53.9%	+0.49	9–1 (90%)	0–2	—	+1.65
1971	26	1748	129.9	—	—	—	—	+105	+80	-167	65.2%	+0.90	3–6 (33%)	7–0 (100%)	100.9	+4.08
1972	27	1706	128.0	—	—	—	—	+63	+56	-87	50.6%	+0.08	3–6 (33%)	5–6 (45%)	94.9	+1.16
1973	28	1698	118.0	—	—	—	—	+46	—	—	52.0%	-0.12	1–2 (33%)	3–0 (100%)	—	-0.13
1974	29	1863	142.5	—	—	—	—	-34	-6	-203	61.5%	+0.43	5–5 (50%)	7–2 (78%)	104.7	-2.09
1975	30	1768	140.3	—	—	—	—	+80	+17	—	49.5%	+0.08	9–8 (53%)	4–5 (44%)	98.9	-1.44
1976	31	1816	127.2	—	—	—	—	+53	-51	—	60.7%	+0.64	5–2 (71%)	3–3 (50%)	102.5	+3.43
1977	32	1715	108.6	—	—	—	—	+34	—	—	31.8%	-1.27	1–3 (25%)	1–1	—	+0.02
1979	34	1665	115.2	—	—	—	—	+30	+52	—	42.3%	-0.85	1–3 (25%)	1–0	—	+0.07
1980	35	1654	135.1	—	—	—	—	+61	+52	-47	46.3%	-0.24	1–3 (25%)	3–2 (60%)	98.7	-0.22
1981	36	1630	99.5	—	—	—	—	—	—	—	0.0%	-2.75	—	—	—	-0.20
1982	37	1595	108.2	—	—	—	—	—	+58	—	21.4%	-2.21	0–1	0–1	—	-0.55
1983	38	1586	102.5	—	—	—	—	—	—	—	50.0%	+0.75	—	—	—	+0.53
Career		1880	136.9	—	—	—	—	+50	+30	-156	55.5%	+0.38	53–56 (49%)	34–22 (61%)	101.5	+2.94

Tournament Results by Category

Grand Slams

Thomaz Koch Grand Slams results by season
Season	Age	RG	W	USO	W-L Win %
1968	23	QF	R64	R64	5–3 (62%)
1969	24	—	R128	R64	1–2 (33%)
1970	25	—	—	R64	1–1 (50%)
1971	26	R128	R64	R64	2–3 (40%)
1972	27	R64	R128	—	0–2 (0%)
1973	28	—	—	R128	0–1 (0%)
1974	29	R16	R64	R32	6–3 (67%)
1975	30	R128	R128	—	0–2 (0%)
1977	32	R64	—	—	1–1 (50%)
1980	35	R64	R128	—	1–2 (33%)
W-L		9–7 (56%)	3–7 (30%)	5–6 (45%)	17–20 (46%)

ATP 500

Thomaz Koch ATP 500 results by season
Season	Age	ITA	CAN	W-L Win %
1974	29	R64	—	0–1 (0%)
1975	30	R32	R16	3–2 (60%)
W-L		1–2 (33%)	2–1 (67%)	3–3 (50%)

ATP 250

Thomaz Koch ATP 250 results by season
Season	Age	SWE	BAR	BAS	BUE	CIN	DAL	EAS	GST	HAM	HOU	AUS	MAD	MUN	NAP	PAR	QUE	ITA	SPB	STG	STO	VIE	WAS	BAH	BAR	BER	BLO	BOG	BOS	BRI	CAP	CAR	CAR	CED	CHA	CUR	DEN	DES	DUR	DUS	FOR	GUA	HAM	HIL	IST	JOH	KAN	KHA	KIN	AUS	LA	LA	LA	LOS	LOS	LOS	LOU	MAC	MAN	NEW	EAS	NUR	OMA	ORL	PHI	POR	QUE	QUI	RIC	ROA	SAL	SAN	SAN	SAO	SAO	SEN	SOU	SOU	ST.	SUR	TAN	TEH	W-L Win %
1968	23	R16	R16	—	SF	—	—	—	—	—	—	—	QF	—	—	—	—	R32	—	—	—	—	—	—	—	—	QF	—	—	—	R64	—	—	—	—	—	—	—	R16	—	—	—	—	—	—	—	—	—	—	QF	SF	—	—	—	—	—	—	—	—	—	—	—	—	—	QF	F	W	—	—	—	R64	—	—	—	—	QF	—	—	—	—	—	—	24–14 (63%)
1969	24	—	R16	—	—	—	F	—	—	—	QF	—	—	—	—	—	R128	—	—	—	—	—	W	—	QF	BR	—	—	R128	—	—	W	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	W	—	—	—	—	—	QF	—	—	SF	—	R32	—	—	R16	—	R16	—	—	—	F	—	R16	—	R16	—	—	—	—	—	—	—	—	—	33–16 (67%)
1970	25	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R64	—	—	—	—	—	—	—	—	QF	—	—	—	—	—	SF	—	—	—	QF	—	—	—	—	—	—	F	—	—	—	—	—	—	—	—	—	—	—	R16	—	—	R16	—	RR	—	—	SF	—	R32	—	—	—	—	—	R32	—	—	—	—	—	—	R32	—	—	—	—	17–14 (55%)
1971	26	—	—	—	R32	—	—	—	—	—	—	—	QF	—	—	—	—	—	—	—	—	—	F	—	—	—	—	—	—	—	—	W	—	—	—	—	—	—	—	—	—	—	QF	—	—	—	—	—	—	—	—	—	—	—	—	—	—	QF	R16	SF	—	—	SF	—	—	—	—	—	—	—	QF	—	—	—	—	—	—	—	—	—	R64	—	22–10 (69%)
1972	27	—	—	—	—	—	—	R32	R16	—	—	R16	—	—	—	—	—	—	—	—	—	—	R16	—	—	—	—	—	—	R16	—	—	—	—	—	—	—	QF	—	R16	—	—	R16	—	—	—	QF	—	—	—	—	—	—	SF	—	—	—	—	W	R32	—	—	QF	—	—	—	—	—	—	QF	R64	—	—	—	—	—	—	QF	—	—	—	—	19–15 (56%)
1973	28	—	—	—	R16	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	RR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	RR	—	—	—	—	—	—	—	—	—	5–5 (50%)
1974	29	—	R32	—	—	—	—	—	R16	—	—	R32	—	—	—	QF	—	—	—	—	R16	—	—	—	—	—	—	—	—	—	—	—	—	SF	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	SF	—	—	—	—	—	—	SF	16–8 (67%)
1975	30	SF	—	—	R16	R32	—	—	—	—	—	—	—	—	R16	—	—	—	R32	—	—	—	R64	—	—	—	—	—	—	—	—	—	R32	—	R32	—	QF	—	—	—	—	—	—	—	QF	—	—	—	—	—	—	—	R32	—	—	—	—	—	—	—	R64	—	—	R16	R64	—	—	—	—	—	R16	—	—	—	SF	—	—	—	R16	—	—	—	16–17 (48%)
1976	31	—	—	—	SF	—	—	—	—	—	—	—	—	—	R32	—	—	—	—	—	—	—	R64	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	F	—	—	—	—	—	—	—	—	R64	—	—	—	—	F	—	—	—	—	—	—	—	—	—	—	—	SF	SF	—	—	—	—	—	—	—	15–8 (65%)
1977	32	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R32	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R32	—	—	—	—	—	R64	—	—	R64	—	—	—	—	—	R64	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0–5 (0%)
1979	34	—	—	R16	R32	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R16	—	R64	—	—	—	—	—	QF	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R32	—	—	—	R32	—	—	—	—	—	—	—	—	—	—	4–7 (36%)
1980	35	—	—	—	R16	—	—	—	—	R32	—	—	—	R32	—	—	R64	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	SF	—	—	R32	—	—	R16	—	—	6–7 (46%)
1981	36	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R32	R32	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0–2 (0%)
1982	37	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R32	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R64	R16	—	R32	—	—	—	—	—	—	—	—	—	—	—	R32	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1–5 (17%)
1983	38	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R16	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1–1 (50%)
W-L		4–2 (67%)	5–3 (62%)	1–1 (50%)	9–7 (56%)	0–1 (0%)	3–1 (75%)	0–1 (0%)	2–2 (50%)	1–1 (50%)	2–1 (67%)	1–2 (33%)	4–2 (67%)	0–1 (0%)	3–2 (60%)	2–1 (67%)	0–3 (0%)	2–1 (67%)	0–1 (0%)	1–1 (50%)	2–1 (67%)	0–1 (0%)	9–5 (64%)	1–2 (33%)	0–1 (0%)	6–3 (67%)	3–1 (75%)	2–1 (67%)	0–1 (0%)	1–1 (50%)	0–1 (0%)	11–3 (79%)	0–1 (0%)	3–1 (75%)	0–1 (0%)	1–1 (50%)	2–1 (67%)	1–1 (50%)	2–1 (67%)	0–1 (0%)	0–2 (0%)	1–2 (33%)	7–3 (70%)	0–1 (0%)	2–1 (67%)	0–1 (0%)	0–1 (0%)	3–1 (75%)	4–0 (100%)	2–1 (67%)	1–1 (50%)	0–1 (0%)	0–1 (0%)	3–1 (75%)	5–3 (62%)	0–1 (0%)	0–1 (0%)	6–3 (67%)	9–1 (90%)	4–6 (40%)	0–2 (0%)	3–1 (75%)	5–4 (56%)	1–1 (50%)	2–4 (33%)	3–1 (75%)	1–0 (100%)	0–1 (0%)	2–1 (67%)	0–1 (0%)	4–6 (40%)	0–1 (0%)	3–3 (50%)	6–2 (75%)	8–3 (73%)	1–1 (50%)	0–1 (0%)	3–2 (60%)	1–1 (50%)	1–1 (50%)	0–1 (0%)	4–1 (80%)	179–134 (57%)

Results show the best round reached per tournament and season.

ATP Ranking History full ranking history →

Career high

Career-high date

Dec 23, 1974

First Top 100

Jul 29, 1974

First Top 50

Sep 30, 1974

First Top 20

—

First Top 10

—

Ranking History Matrix

Thomaz Koch ranking history by month and season
Season	Age	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	28	—	—	—	—	—	—	—	—	—	—	—	204
1974	29	—	—	210	132	131	119	72	63	44	—	40	24
1975	30	24	—	31	35	42	48	—	—	—	—	—	62
1976	31	—	—	—	—	—	43	—	—	—	—	—	58
1977	32	60	63	74	94	100	89	93	94	—	—	—	—
1978	33	258	—	—	—	—	—	—	—	—	—	—	—
1979	34	—	—	—	—	—	—	—	79	64	66	80	85
1980	35	88	84	76	78	67	68	82	76	70	59	48	49
1981	36	60	59	59	53	68	84	86	90	—	—	—	—
1983	38	185	—	—	—	—	—	—	—	—	—	—	—
1984	39	331	—	—	—	—	379	483	511	498	485	726	745
1985	40	748	—	—	—	—	—	—	—	—	—	805	794
1986	41	789	783	782	773	759	761	799	839	853	856	857	—

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

Thomaz Koch's most statistically similar ATP players
Player	Country	Peak ranking	Peak Elo	M	W	L	Win %	Prize money	Titles	Years	Rivalries	Match log
Ross Case	AUS	#24	1,962	567	293	274	51.7%	—	4	1968–1983	Rivalries	Match log
Brian Fairlie	NZL	#24	1,903	453	233	220	51.4%	—	3	1968–1979	Rivalries	Match log
Jiri Hrebec	CZE	#25	1,912	341	171	170	50.1%	$29,559	4	1968–1981	Rivalries	Match log
Ray Ruffels	AUS	#27	1,905	451	246	205	54.5%	—	5	1968–1980	Rivalries	Match log
Patrick Proisy	FRA	#23	1,876	417	222	195	53.2%	—	1	1968–1981	Rivalries	Match log
Karl Meiler	GER	#20	1,903	442	252	190	57.0%	$2,148	4	1968–1985	Rivalries	Match log
Fred Stolle	AUS	#30	1,922	344	177	167	51.5%	$328	6	1968–1982	Rivalries	Match log
Antonio Zugarelli	ITA	#24	1,821	261	112	149	42.9%	$1,809	1	1968–1983	Rivalries	Match log
Paul Mcnamee	AUS	#24	1,900	446	229	217	51.3%	$1,233,615	2	1972–1988	Rivalries	Match log
Onny Parun	NZL	#19	1,991	716	375	341	52.4%	$4,000	6	1968–1982	Rivalries	Match log
Jeff Borowiak	USA	#20	1,958	594	290	304	48.8%	$598	5	1968–1984	Rivalries	Match log
Francois Jauffret	FRA	#20	1,911	332	199	133	59.9%	—	2	1968–1980	Rivalries	Match log

Frequently Asked Questions

How old is Thomaz Koch?: Thomaz Koch is 81 years old, born on May 11, 1945.
Which country does Thomaz Koch represent?: Thomaz Koch represents Brazil in TennisDB's ATP records.
Is Thomaz Koch left-handed or right-handed?: Thomaz Koch plays left-handed.
How many Grand Slam singles titles has Thomaz Koch won?: Thomaz Koch has not won a Grand Slam singles title.
How many Masters 1000 titles has Thomaz Koch won?: TennisDB does not group any of Thomaz Koch's titles under the modern Masters 1000 category.
How many ATP titles has Thomaz Koch won?: Thomaz Koch has won 6 ATP singles titles across all categories. The most recent was Manchester in 1972.
What is Thomaz Koch's highest ATP ranking?: Thomaz Koch's career-high ATP singles ranking is world No. 24, first achieved on December 23, 1974.
What is Thomaz Koch's career win-loss record?: Thomaz Koch has a career ATP singles record of 199 wins and 157 losses (55.9%).
How much career prize money has Thomaz Koch earned?: Thomaz Koch has earned at least $2,532 in career prize money from professional tennis.
Which seasons of Thomaz Koch's career appear in TennisDB?: Thomaz Koch appears in TennisDB's ATP main-tour match records from 1968 through 1983.
On which surface does Thomaz Koch have the highest recorded win rate?: Among surfaces with at least 20 recorded matches, Thomaz Koch's highest ATP main-draw win rate is on carpet: 59.3% (48–33).
Who has Thomaz Koch faced most often?: Thomaz Koch's most frequent opponent is Arthur Ashe, with a head-to-head record of 3–5 across 8 meetings.