H2H data updated: 2026-09-11 00:00 UTC

Jun Kamiwazumi vs Vladimir Zednik H2H: 1-0

Jun Kamiwazumi holds a 1–0 lead over Vladimir Zednik in their ATP head-to-head. Across 1 main-draw meeting, Jun Kamiwazumi leads 1–0 on grass. Most recently, Jun Kamiwazumi won the 1973 US Open round of 64 4-6 6-3 6-4 5-7 6-4.

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Jun Kamiwazumi
JPN Age 78 Right-Handed
H2H
1 – 0
1 main-draw meetings
Vladimir Zednik
CZE Age 79 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jun Kamiwazumi #123 4-6 6-3 6-4 5-7 6-4 Vladimir Zednik #96 Match data Sep 2, 1973* R64 US Open Grand Slam Grass

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
Jun Kamiwazumi #808 #78 0 1,624 64 99 39.3% 0 0 0 0 0 0
Vladimir Zednik #300 #35 0 1,757 113 158 41.7% 0 0 0 0 2 2

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 Jun Kamiwazumi Vladimir Zednik
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 1968 1–1 50.0% — 1,498 0 0 — — — — — — —
21 1969 0–1 0.0% — 1,483 0 0 1968 1–1 50.0% — 1,500 0 0
22 — — — — — — — 1969 4–2 66.7% — 1,561 0 0
23 1971 6–5 54.5% — 1,535 0 0 1970 6–7 46.2% — 1,576 0 0
24 1972 13–13 50.0% — 1,537 0 0 1971 17–20 45.9% — 1,629 0 0
25 1973 10–16 38.5% #94 1,526 0 0 1972 19–20 48.7% — 1,653 0 1
26 1974 14–22 38.9% #100 1,579 0 0 1973 14–24 36.8% #90 1,636 0 1
27 1975 11–23 32.4% #127 1,570 0 0 1974 12–19 38.7% #93 1,635 0 1
28 1976 1–10 9.1% #206 1,514 0 0 1975 3–11 21.4% #157 1,622 0 1
29 1977 1–2 33.3% #264 1,523 0 0 1976 5–11 31.2% #106 1,593 0 1
30 1978 2–2 50.0% #284 1,549 0 0 1977 9–13 40.9% #66 1,642 0 1
31 1979 3–1 75.0% #257 1,589 0 0 1978 22–22 50.0% #70 1,660 0 2
32 1980 2–2 50.0% #269 1,595 0 0 1979 1–7 12.5% #300 1,582 0 2
33 — — — — — — — 1980 0–1 0.0% — 1,572 0 2
36 1984 0–1 0.0% #745 1,581 0 0 — — — — — — —

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 Jun Kamiwazumi Vladimir Zednik
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
20 1968 — — — — — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
21 1969 — — — — — — — — 0 1 1 0.0% — — — — 1968 — — — — 1 1 2 50.0% — — — — — — — —
22 — — — — — — — — — — — — — — — — — 1969 3 1 4 75.0% 1 1 2 50.0% — — — — — — — —
23 1971 4 3 7 57.1% 0 1 1 0.0% 2 1 3 66.7% — — — — 1970 — — — — 2 3 5 40.0% 3 3 6 50.0% 1 1 2 50.0%
24 1972 5 3 8 62.5% 6 5 11 54.5% 2 5 7 28.6% — — — — 1971 9 10 19 47.4% 5 5 10 50.0% 0 4 4 0.0% 3 1 4 75.0%
25 1973 2 3 5 40.0% 2 6 8 25.0% 6 7 13 46.2% — — — — 1972 4 6 10 40.0% 5 6 11 45.5% 0 2 2 0.0% 10 6 16 62.5%
26 1974 2 4 6 33.3% 10 11 21 47.6% 0 2 2 0.0% 2 5 7 28.6% 1973 0 3 3 0.0% 8 9 17 47.1% 3 3 6 50.0% 3 9 12 25.0%
27 1975 0 5 5 0.0% 7 10 17 41.2% 1 2 3 33.3% 3 6 9 33.3% 1974 0 2 2 0.0% 4 6 10 40.0% 5 6 11 45.5% 3 5 8 37.5%
28 1976 0 2 2 0.0% 1 6 7 14.3% 0 2 2 0.0% — — — — 1975 0 2 2 0.0% 3 2 5 60.0% — — — — 0 7 7 0.0%
29 1977 — — — — 1 1 2 50.0% 0 1 1 0.0% — — — — 1976 1 2 3 33.3% 3 8 11 27.3% — — — — 1 1 2 50.0%
30 1978 — — — — 2 1 3 66.7% — — — — 0 1 1 0.0% 1977 0 1 1 0.0% 7 8 15 46.7% — — — — 2 4 6 33.3%
31 1979 — — — — 3 1 4 75.0% — — — — — — — — 1978 1 3 4 25.0% 19 12 31 61.3% 0 1 1 0.0% 2 6 8 25.0%
32 1980 — — — — 2 1 3 66.7% — — — — 0 1 1 0.0% 1979 0 3 3 0.0% 0 2 2 0.0% — — — — 1 2 3 33.3%
33 — — — — — — — — — — — — — — — — — 1980 0 1 1 0.0% — — — — — — — — — — — —
36 1984 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 13 21 34 38.2% 34 43 77 44.2% 12 22 34 35.3% 5 13 18 27.8% — 18 34 52 34.6% 58 63 121 47.9% 11 19 30 36.7% 26 42 68 38.2%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. 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 Jun Kamiwazumi Vladimir Zednik
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
20 1968 1498 97.2 — — — — — — — 50.0% -0.83 — — — +0.25 — — — — — — — — — — — — — — — —
21 1969 1483 95.1 — — — — — — — 0.0% -4.50 — — — +0.04 1968 1500 101.6 — — — — — — — 60.0% +0.60 0–1 — — +0.06
22 — — — — — — — — — — — — — — — — 1969 1562 110.4 — — — — +69 — — 58.8% +0.47 1–0 — — +0.42
23 1971 1535 104.7 — — — — +40 — +24 52.8% -0.42 1–2 (33%) 4–0 (100%) 102.6 +1.62 1970 1576 112.1 — — — — — -41 -8 44.2% -0.47 3–1 (75%) 3–0 (100%) — +0.55
24 1972 1537 106.9 — — — — +69 +52 -33 47.8% -0.15 6–3 (67%) 1–2 (33%) 103.3 +3.48 1971 1630 112.7 — — — — +20 -4 -140 46.0% -0.41 6–7 (46%) 6–4 (60%) 100.6 +2.74
25 1973 1527 111.0 — — — — +83 -10 +15 39.7% -0.59 5–3 (63%) 5–6 (45%) 103.9 +1.55 1972 1654 127.7 — — — — +75 -41 — 47.8% -0.14 5–3 (63%) 10–5 (67%) 106.7 +1.73
26 1974 1579 122.1 — — — — -11 +27 — 38.8% -0.85 5–6 (45%) 5–3 (63%) 102.1 +0.29 1973 1637 128.2 — — — — +13 +39 -161 42.9% -0.51 2–5 (29%) 3–8 (27%) 94.4 -0.89
27 1975 1570 124.1 — — — — -82 +30 -45 37.5% -0.76 2–5 (29%) 4–3 (57%) 97.0 -0.39 1974 1636 122.3 — — — — -16 -23 -87 43.5% -0.32 3–7 (30%) 8–5 (62%) 100.5 -0.80
28 1976 1515 119.5 — — — — — +32 — 14.8% -2.19 1–1 0–3 (0%) — -1.33 1975 1622 129.9 — — — — -78 +28 — 29.0% -0.93 3–1 (75%) 1–6 (14%) 100.9 -1.26
29 1977 1523 106.2 — — — — — — — 42.9% -1.14 0–1 — — -0.19 1976 1593 122.5 — — — — -42 -10 — 38.1% -0.67 3–6 (33%) 4–3 (57%) 102.3 -0.27
30 1978 1549 104.8 — — — — — +39 — 50.0% -0.40 1–1 1–1 — -0.01 1977 1643 134.4 — — — — -94 -5 — 50.8% +0.08 1–10 (9%) 4–5 (44%) 93.7 +0.22
31 1979 1589 113.2 — — — — — +29 — 75.0% +1.75 — 0–1 — +0.47 1978 1661 140.4 — — — — -125 +79 — 50.0% +0.10 6–8 (43%) 6–10 (38%) 98.0 +1.29
32 1980 1596 103.5 — — — — — +22 — 40.0% -0.20 2–0 1–1 — +0.26 1979 1583 117.3 — — — — -89 — — 11.8% -2.00 1–0 0–3 (0%) — +0.12
33 — — — — — — — — — — — — — — — — 1980 1573 101.3 — — — — — — — 33.3% 0.00 0–1 0–2 — -0.06
36 1984 1581 98.5 — — — — — — — 0.0% -3.50 — — — +0.05 — — — — — — — — — — — — — — — —
Career — 1624 119.1 — — — — -1 +28 -4 40.7% -0.68 23–22 (51%) 21–20 (51%) 104.4 +3.78 — 1757 133.1 — — — — -8 +19 -94 44.8% -0.30 34–50 (40%) 45–51 (47%) 99.4 +1.45

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.