H2H data updated: 2026-09-06 00:00 UTC

John James vs Heinz Gunthardt H2H: 1-1

John James and Heinz Gunthardt are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, John James leads 1–0 on grass, while Heinz Gunthardt leads 1–0 on hard courts. Most recently, Heinz Gunthardt won the 1978 South African Open round of 32 6-2 2-6 6-4.

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John James
AUS Age 75 Right-Handed 183 cm / 6'0"
H2H
1 – 1
2 main-draw meetings
Heinz Gunthardt
SUI Age 67 Right-Handed 180 cm / 5'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Heinz Gunthardt #53 6-2 2-6 6-4 John James Match data Dec 7, 1978* R32 South African Open ATP 250 Hard
John James 6-4 6-3 Heinz Gunthardt #59 Match data Jun 22, 1978* R32 Queen's Club Championships ATP 250 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
John James #808 #81 28 1,682 98 144 40.5% 0 0 0 0 0 0
Heinz Gunthardt #1,013 #22 0 1,969 225 189 54.3% 0 0 0 0 5 5

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 John James Heinz Gunthardt
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 1968 3–3 50.0% — 1,516 0 0 1976 1–4 20.0% #210 1,496 0 0
18 — — — — — — — 1977 3–6 33.3% #234 1,509 0 0
19 1970 1–1 50.0% — 1,513 0 0 1978 25–25 50.0% #55 1,765 0 1
20 — — — — — — — 1979 30–23 56.6% #51 1,815 0 1
21 1972 7–4 63.6% — 1,570 0 0 1980 37–21 63.8% #26 1,834 0 4
22 1973 0–5 0.0% — 1,514 0 0 1981 28–22 56.0% #38 1,813 0 4
23 1974 2–3 40.0% #249 1,517 0 0 1982 26–25 51.0% #85 1,722 0 4
24 1975 5–10 33.3% #135 1,517 0 0 1983 27–15 64.3% #25 1,853 0 5
25 1976 6–14 30.0% #146 1,512 0 0 1984 23–19 54.8% #31 1,779 0 5
26 1977 16–23 41.0% #97 1,583 0 0 1985 22–19 53.7% #36 1,820 0 5
27 1978 20–27 42.6% #102 1,629 0 0 1986 3–9 25.0% #251 1,671 0 5
28 1979 19–22 46.3% #91 1,644 0 0 1987 0–1 0.0% #954 1,664 0 5
29 1980 12–25 32.4% #209 1,493 0 0 — — — — — — —
30 1981 3–4 42.9% — 1,490 0 0 — — — — — — —
31 1982 4–3 57.1% — 1,559 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 John James Heinz Gunthardt
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 %
17 1968 — — — — — — — — 3 3 6 50.0% — — — — 1976 0 1 1 0.0% 1 2 3 33.3% — — — — 0 1 1 0.0%
18 — — — — — — — — — — — — — — — — — 1977 0 2 2 0.0% 0 2 2 0.0% 1 1 2 50.0% 2 1 3 66.7%
19 1970 — — — — — — — — 1 1 2 50.0% — — — — 1978 9 7 16 56.3% 9 12 21 42.9% 1 3 4 25.0% 6 3 9 66.7%
20 — — — — — — — — — — — — — — — — — 1979 15 9 24 62.5% 13 8 21 61.9% 1 1 2 50.0% 1 5 6 16.7%
21 1972 0 1 1 0.0% — — — — 7 3 10 70.0% — — — — 1980 13 6 19 68.4% 11 5 16 68.8% 2 1 3 66.7% 11 9 20 55.0%
22 1973 — — — — — — — — 0 5 5 0.0% — — — — 1981 6 4 10 60.0% 15 10 25 60.0% 0 1 1 0.0% 7 7 14 50.0%
23 1974 — — — — — — — — 2 3 5 40.0% — — — — 1982 2 3 5 40.0% 16 12 28 57.1% 0 1 1 0.0% 8 9 17 47.1%
24 1975 0 1 1 0.0% 2 4 6 33.3% 2 3 5 40.0% 1 2 3 33.3% 1983 10 4 14 71.4% 17 9 26 65.4% — — — — 0 2 2 0.0%
25 1976 1 4 5 20.0% 1 6 7 14.3% 4 3 7 57.1% 0 1 1 0.0% 1984 7 6 13 53.8% 12 6 18 66.7% 0 1 1 0.0% 4 6 10 40.0%
26 1977 1 3 4 25.0% 8 8 16 50.0% 4 6 10 40.0% 3 6 9 33.3% 1985 9 7 16 56.3% 6 5 11 54.5% 4 1 5 80.0% 3 6 9 33.3%
27 1978 7 8 15 46.7% 2 8 10 20.0% 9 6 15 60.0% 2 5 7 28.6% 1986 0 1 1 0.0% 1 5 6 16.7% 1 1 2 50.0% 1 2 3 33.3%
28 1979 5 6 11 45.5% 4 6 10 40.0% 8 7 15 53.3% 2 3 5 40.0% 1987 0 1 1 0.0% — — — — — — — — — — — —
29 1980 4 7 11 36.4% 5 10 15 33.3% 3 5 8 37.5% 0 3 3 0.0% — — — — — — — — — — — — — — — — —
30 1981 2 2 4 50.0% 1 1 2 50.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
31 1982 — — — — 1 2 3 33.3% 3 1 4 75.0% — — — — — — — — — — — — — — — — — — — — —
Career — 20 32 52 38.5% 24 45 69 34.8% 46 47 93 49.5% 8 20 28 28.6% — 71 51 122 58.2% 101 76 177 57.1% 10 11 21 47.6% 43 51 94 45.7%

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 John James Heinz Gunthardt
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
17 1968 1517 105.8 — — — — — — +24 56.5% +0.69 1–2 (33%) — — +0.22 1976 1497 106.8 — — — — — +44 — 27.3% -2.09 0–1 0–1 — -0.14
18 — — — — — — — — — — — — — — — — 1977 1510 115.1 — — — — +44 — — 40.0% -0.60 0–2 1–1 — +0.49
19 1970 1514 99.8 — — — — — — — 50.0% 0.00 — — — +0.23 1978 1766 146.9 — — — — +3 -145 -225 48.8% -0.21 10–7 (59%) 9–7 (56%) 107.7 -3.10
20 — — — — — — — — — — — — — — — — 1979 1815 145.2 — — — — -9 -69 — 54.6% +0.22 11–8 (58%) 11–6 (65%) 106.3 -1.34
21 1972 1570 111.6 — — — — — — +66 56.7% +0.27 1–1 3–0 (100%) — +0.69 1980 1835 148.3 — — — — +31 -59 -191 59.5% +0.48 12–8 (60%) 11–5 (69%) 105.9 -2.27
22 1973 1514 96.4 — — — — — — -5 23.1% -1.54 0–1 0–1 — -0.23 1981 1813 148.5 — — — — -9 +4 — 53.1% +0.19 8–4 (67%) 8–6 (57%) 106.5 -2.56
23 1974 1518 116.6 — — — — — — -4 30.0% -2.20 0–1 1–0 — -0.43 1982 1722 150.4 — — — — +6 +108 — 50.0% +0.01 5–3 (63%) 8–8 (50%) 100.4 -3.00
24 1975 1517 115.0 — — — — +32 +20 -4 35.3% -1.26 0–2 2–0 — +0.66 1983 1853 151.4 — — — — -33 0 — 59.8% +0.76 10–9 (53%) 5–9 (36%) 96.3 -0.24
25 1976 1513 125.5 — — — — -18 -10 +71 36.0% -0.80 3–4 (43%) 2–3 (40%) 99.0 +1.02 1984 1779 140.1 — — — — -19 +105 — 50.5% +0.08 9–3 (75%) 10–13 (43%) 103.8 -0.50
26 1977 1583 129.9 — — — — -86 +21 -28 40.0% -0.40 4–4 (50%) 1–3 (25%) 99.4 -0.34 1985 1820 135.6 — — — — -43 -26 -105 50.0% +0.11 11–6 (65%) 6–11 (35%) 100.8 0.00
27 1978 1629 127.4 — — — — -82 -94 +53 43.9% -0.27 6–6 (50%) 4–7 (36%) 99.8 +1.51 1986 1672 117.2 — — — — +63 +24 — 38.2% -0.35 0–4 (0%) 2–7 (22%) 88.0 +0.03
28 1979 1645 125.5 — — — — -50 -102 +53 47.9% -0.21 2–3 (40%) 5–7 (42%) 97.3 +2.00 1987 1665 110.5 — — — — — — — 33.3% -0.67 0–1 — — -0.32
29 1980 1494 113.3 — — — — +7 +34 +158 34.9% -0.97 2–7 (22%) 1–4 (20%) 92.6 +3.49 — — — — — — — — — — — — — — — —
30 1981 1490 106.2 — — — — +36 — — 50.0% -0.45 0–2 — — +1.40 — — — — — — — — — — — — — — — —
31 1982 1560 121.8 — — — — — -22 +96 50.0% -0.56 2–0 1–0 — -0.32 — — — — — — — — — — — — — — — —
Career — 1683 127.2 — — — — -44 -17 +47 42.3% -0.49 21–33 (39%) 20–25 (44%) 94.5 +4.13 — 1970 150.7 — — — — -3 -2 -167 52.3% +0.15 76–56 (58%) 71–74 (49%) 103.5 -3.13

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.