H2H data updated: 2026-09-05 00:00 UTC

Thomaz Koch vs Mike Belkin H2H: 1-0

Thomaz Koch holds a 1–0 lead over Mike Belkin in their ATP head-to-head. Across 1 main-draw meeting, Thomaz Koch leads 1–0 on clay. Most recently, Thomaz Koch won the 1969 Washington Open semifinal 6-2 6-3.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Thomaz Koch

BRA Age 81 Left-Handed

H2H

1 – 0

1 main draw meetings

Mike Belkin

CAN Age 81 Right-Handed

H2H Match Log

Player	Score	Player	Match Data	Date	Round	Tournament	Category	Surface
Thomaz Koch	6-2 6-3	Mike Belkin	Match data	Jul 12, 1969*	SF	Washington Open	ATP 250	Clay

Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.

Career Comparison

Player	Current	Peak	Pts	Elo	W	L	Win %	GS	1000 including documented historical predecessor categories	Finals	500 including documented historical predecessor categories	250 including documented historical predecessor categories	Titles
Thomaz Koch	#857	#24	0	1,880	199	157	55.9%	0	0	0	0	6	6
Mike Belkin	#222	#128	0	1,770	77	58	57.0%	0	0	0	0	1	1

Career Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.

Age	Thomaz Koch							Mike Belkin
Age	Yr	W-L	Win %	Rank	Elo	GS	Titles	Yr	W-L	Win %	Rank	Elo	GS	Titles
23	1968	29–17	63.0%	—	1,672	0	1	1968	20–6	76.9%	—	1,680	0	0
24	1969	34–18	65.4%	—	1,796	0	4	1969	21–10	67.7%	—	1,736	0	0
25	1970	18–15	54.5%	—	1,804	0	4	1970	8–8	50.0%	—	1,680	0	0
26	1971	24–13	64.9%	—	1,747	0	5	1971	20–15	57.1%	—	1,720	0	1
27	1972	19–17	52.8%	—	1,706	0	6	1972	3–10	23.1%	—	1,664	0	1
28	1973	5–6	45.5%	#204	1,698	0	6	1973	3–6	33.3%	#161	1,624	0	1
29	1974	22–12	64.7%	#24	1,863	0	6	1974	0–1	0.0%	#318	1,622	0	1
30	1975	19–21	47.5%	#62	1,768	0	6	1975	2–2	50.0%	#222	1,643	0	1
31	1976	15–8	65.2%	#58	1,815	0	6	—	—	—	—	—	—	—
32	1977	1–6	14.3%	#94	1,715	0	6	—	—	—	—	—	—	—
34	1979	4–7	36.4%	#85	1,665	0	6	—	—	—	—	—	—	—
35	1980	7–9	43.8%	#49	1,654	0	6	—	—	—	—	—	—	—
36	1981	0–2	0.0%	#90	1,630	0	6	—	—	—	—	—	—	—
37	1982	1–5	16.7%	—	1,594	0	6	—	—	—	—	—	—	—
38	1983	1–1	50.0%	#185	1,585	0	6	—	—	—	—	—	—	—

Surface Results by Age

Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.

Age	Thomaz Koch																	Mike Belkin
	Yr	Hard				Clay				Grass				Carpet				Yr	Hard				Clay				Grass				Carpet
	Yr	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	Yr	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
23	1968	9	5	14	64.3%	18	9	27	66.7%	1	2	3	33.3%	1	1	2	50.0%	1968	0	1	1	0.0%	14	3	17	82.4%	6	2	8	75.0%	—	—	—	—
24	1969	12	6	18	66.7%	12	3	15	80.0%	1	4	5	20.0%	9	5	14	64.3%	1969	—	—	—	—	20	9	29	69.0%	1	1	2	50.0%	—	—	—	—
25	1970	12	7	19	63.2%	—	—	—	—	1	2	3	33.3%	5	6	11	45.5%	1970	0	1	1	0.0%	8	6	14	57.1%	0	1	1	0.0%	—	—	—	—
26	1971	6	4	10	60.0%	6	3	9	66.7%	5	3	8	62.5%	7	3	10	70.0%	1971	6	8	14	42.9%	14	5	19	73.7%	—	—	—	—	0	2	2	0.0%
27	1972	4	5	9	44.4%	2	4	6	33.3%	7	3	10	70.0%	6	5	11	54.5%	1972	1	2	3	33.3%	2	3	5	40.0%	0	1	1	0.0%	0	4	4	0.0%
28	1973	4	4	8	50.0%	1	1	2	50.0%	0	1	1	0.0%	—	—	—	—	1973	1	3	4	25.0%	1	1	2	50.0%	—	—	—	—	1	2	3	33.3%
29	1974	4	2	6	66.7%	12	7	19	63.2%	3	2	5	60.0%	3	1	4	75.0%	1974	—	—	—	—	0	1	1	0.0%	—	—	—	—	—	—	—	—
30	1975	1	4	5	20.0%	12	11	23	52.2%	0	2	2	0.0%	6	4	10	60.0%	1975	2	2	4	50.0%	—	—	—	—	—	—	—	—	—	—	—	—
31	1976	3	1	4	75.0%	4	4	8	50.0%	—	—	—	—	8	3	11	72.7%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
32	1977	0	2	2	0.0%	1	1	2	50.0%	0	1	1	0.0%	0	2	2	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
34	1979	1	3	4	25.0%	3	4	7	42.9%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
35	1980	0	1	1	0.0%	3	4	7	42.9%	1	3	4	25.0%	3	1	4	75.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
36	1981	0	1	1	0.0%	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
37	1982	—	—	—	—	1	3	4	25.0%	—	—	—	—	0	2	2	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
38	1983	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%	—	10	17	27	37.0%	59	28	87	67.8%	7	5	12	58.3%	1	8	9	11.1%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.

Age	Thomaz Koch																Mike Belkin
Age	Yr	Elo	P+	Serve+	Return+	PD	TPW%	Hard Elo	Clay Elo	Grass Elo	Set Win %	Set Margin	Dec. Set	Tiebreak	Pressure+	Schedule	Yr	Elo	P+	Serve+	Return+	PD	TPW%	Hard Elo	Clay Elo	Grass Elo	Set Win %	Set Margin	Dec. Set	Tiebreak	Pressure+	Schedule
23	1968	1672	129.3	—	—	—	—	-67	+38	-163	61.0%	+1.12	5–9 (36%)	—	—	+0.27	1968	1681	114.6	—	—	—	—	—	+18	-32	66.7%	+0.92	1–1	—	—	+1.63
24	1969	1796	127.3	—	—	—	—	+69	+56	-315	60.8%	+0.65	10–7 (59%)	—	—	+3.64	1969	1737	118.4	—	—	—	—	—	+71	—	62.8%	+0.41	4–1 (80%)	—	—	+1.74
25	1970	1804	127.6	—	—	—	—	+60	—	—	53.9%	+0.49	9–1 (90%)	0–2	—	+1.66	1970	1681	111.7	—	—	—	—	—	+66	—	50.0%	-0.38	1–2 (33%)	—	—	+0.53
26	1971	1748	129.9	—	—	—	—	+105	+80	-167	65.2%	+0.90	3–6 (33%)	7–0 (100%)	100.9	+4.08	1971	1720	128.3	—	—	—	—	-159	+97	—	59.8%	+0.77	4–7 (36%)	3–2 (60%)	96.5	+3.80
27	1972	1706	128.0	—	—	—	—	+63	+56	-87	50.6%	+0.08	3–6 (33%)	5–6 (45%)	94.9	+1.16	1972	1665	113.1	—	—	—	—	-136	+125	—	29.2%	-1.67	1–1	1–0	—	-1.60
28	1973	1698	118.0	—	—	—	—	+46	—	—	52.0%	-0.12	1–2 (33%)	3–0 (100%)	—	-0.13	1973	1624	101.1	—	—	—	—	-126	—	—	35.0%	-0.75	1–1	0–1	—	+0.96
29	1974	1863	142.6	—	—	—	—	-34	-6	-203	61.5%	+0.43	5–5 (50%)	7–2 (78%)	104.7	-2.09	1974	1622	109.3	—	—	—	—	—	—	—	0.0%	-4.00	—	—	—	-0.41
30	1975	1769	140.3	—	—	—	—	+80	+16	—	49.5%	+0.08	9–8 (53%)	4–5 (44%)	98.9	-1.45	1975	1643	112.7	—	—	—	—	-120	—	—	44.4%	-0.67	1–0	1–1	—	+0.23
31	1976	1816	127.2	—	—	—	—	+53	-51	—	60.7%	+0.64	5–2 (71%)	3–3 (50%)	102.5	+3.43	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
32	1977	1715	108.6	—	—	—	—	+35	—	—	31.8%	-1.27	1–3 (25%)	1–1	—	+0.02	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
34	1979	1665	115.2	—	—	—	—	+30	+52	—	42.3%	-0.85	1–3 (25%)	1–0	—	+0.07	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
35	1980	1654	135.1	—	—	—	—	+61	+52	-47	46.3%	-0.24	1–3 (25%)	3–2 (60%)	98.7	-0.22	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
36	1981	1630	99.5	—	—	—	—	—	—	—	0.0%	-2.75	—	—	—	-0.20	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
37	1982	1595	108.2	—	—	—	—	—	+58	—	21.4%	-2.21	0–1	0–1	—	-0.55	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
38	1983	1586	102.5	—	—	—	—	—	—	—	50.0%	+0.75	—	—	—	+0.52	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Career	—	1881	136.9	—	—	—	—	+50	+30	-156	55.5%	+0.38	53–56 (49%)	34–22 (61%)	101.5	+2.93	—	1770	122.6	—	—	—	—	-143	+69	-32	56.5%	+0.26	13–13 (50%)	5–4 (56%)	99.6	+5.29

Career Rivalries

Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.

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

Mike Belkin's most-played ATP rivals
Opponent	W	L	M	Last Played	H2H
Cliff Richey	1	3	4	May 5, 1971	H2H
Clark Graebner	1	3	4	Apr 25, 1971	H2H
Jan Kodes	2	1	3	Feb 21, 1975	H2H
Zeljko Franulovic	0	3	3	Jul 29, 1971	H2H
Bill Bowrey	2	1	3	Apr 23, 1971	H2H