H2H data updated: 2026-09-02 00:00 UTC

Nicholas Kalogeropoulos vs John Clifton H2H: 1-0

Nicholas Kalogeropoulos holds a 1–0 lead over John Clifton in their ATP head-to-head. Across 1 main-draw meeting, Nicholas Kalogeropoulos leads 1–0 on grass. Most recently, Nicholas Kalogeropoulos won the 1970 Eastbourne round of 32 6-8 6-4 6-4.

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Nicholas Kalogeropoulos
GRE Age 81 Right-Handed
H2H
1 – 0
1 main draw meetings
John Clifton
GBR Age 80 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Nicholas Kalogeropoulos 6-8 6-4 6-4 John Clifton Match data Jun 18, 1970* R32 Eastbourne 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
Nicholas Kalogeropoulos #511 #108 0 1,687 55 75 42.3% 0 0 0 0 0 0
John Clifton #323 #243 0 1,504 15 35 30.0% 0 0 0 0 0 0

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 Nicholas Kalogeropoulos John Clifton
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
22 — — — — — — — 1968 4–7 36.4% — 1,455 0 0
23 1968 13–13 50.0% — 1,533 0 0 1969 3–4 42.9% — 1,480 0 0
24 1969 9–10 47.4% — 1,587 0 0 1970 4–10 28.6% — 1,444 0 0
25 1970 10–6 62.5% — 1,661 0 0 1971 2–7 22.2% — 1,431 0 0
26 1971 4–7 36.4% — 1,655 0 0 1972 0–3 0.0% — 1,401 0 0
27 1972 5–8 38.5% — 1,641 0 0 1973 0–2 0.0% — 1,385 0 0
28 1973 12–18 40.0% #113 1,567 0 0 1974 2–2 50.0% #318 1,407 0 0
29 1974 1–11 8.3% #245 1,479 0 0 — — — — — — —
34 1979 1–1 50.0% #511 1,488 0 0 — — — — — — —
35 1980 0–1 0.0% — 1,477 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 Nicholas Kalogeropoulos John Clifton
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 %
22 — — — — — — — — — — — — — — — — — 1968 0 1 1 0.0% 1 2 3 33.3% 2 2 4 50.0% 1 2 3 33.3%
23 1968 — — — — 12 11 23 52.2% 1 2 3 33.3% — — — — 1969 — — — — — — — — 2 2 4 50.0% 1 2 3 33.3%
24 1969 0 1 1 0.0% 6 6 12 50.0% 2 2 4 50.0% 1 1 2 50.0% 1970 0 1 1 0.0% 2 5 7 28.6% 2 4 6 33.3% — — — —
25 1970 2 1 3 66.7% 2 2 4 50.0% 6 3 9 66.7% — — — — 1971 — — — — 1 3 4 25.0% 1 4 5 20.0% — — — —
26 1971 2 3 5 40.0% 0 2 2 0.0% 2 2 4 50.0% — — — — 1972 — — — — — — — — 0 3 3 0.0% — — — —
27 1972 — — — — 3 5 8 37.5% 2 3 5 40.0% — — — — 1973 — — — — — — — — 0 2 2 0.0% — — — —
28 1973 5 7 12 41.7% 3 6 9 33.3% 0 2 2 0.0% 4 3 7 57.1% 1974 0 1 1 0.0% — — — — 2 1 3 66.7% — — — —
29 1974 0 2 2 0.0% — — — — — — — — 1 9 10 10.0% — — — — — — — — — — — — — — — — —
34 1979 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
35 1980 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 10 16 26 38.5% 26 32 58 44.8% 13 14 27 48.1% 6 13 19 31.6% — 0 3 3 0.0% 4 10 14 28.6% 9 18 27 33.3% 2 4 6 33.3%

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 Nicholas Kalogeropoulos John Clifton
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
22 — — — — — — — — — — — — — — — — 1968 1456 101.2 — — — — +17 +31 +64 40.7% -0.63 0–1 — — +0.13
23 1968 1534 109.4 — — — — — +10 — 49.3% -0.23 6–3 (67%) — — +0.08 1969 1481 108.3 — — — — +55 — +35 44.4% -0.39 1–1 — — +0.11
24 1969 1588 115.4 — — — — -11 -27 -2 45.8% -0.31 2–1 (67%) — — +0.63 1970 1445 104.0 — — — — — +12 +38 31.4% -1.03 0–1 — — +0.73
25 1970 1661 120.0 — — — — -41 -97 +6 54.8% +0.31 4–2 (67%) — — +0.07 1971 1431 106.5 — — — — — +13 +46 20.8% -1.88 1–0 — — +0.18
26 1971 1656 117.3 — — — — -52 — +30 43.9% -0.24 3–5 (38%) 2–2 (50%) — -1.13 1972 1402 99.1 — — — — — — +30 33.3% -2.17 0–2 — — -0.11
27 1972 1641 114.3 — — — — — -44 +3 42.9% -0.36 3–2 (60%) 2–0 — -0.43 1973 1385 98.6 — — — — — — — 40.0% 0.00 0–1 — — +0.11
28 1973 1568 120.8 — — — — +76 -4 — 46.6% +0.05 5–9 (36%) 3–5 (38%) — +2.25 1974 1407 100.6 — — — — — — +15 55.6% -0.22 0–1 — — +0.46
29 1974 1479 110.7 — — — — +22 — — 25.8% -1.13 1–6 (14%) 2–3 (40%) — +0.86 — — — — — — — — — — — — — — — —
34 1979 1489 103.6 — — — — — — — 50.0% -0.50 — 1–0 — +0.24 — — — — — — — — — — — — — — — —
35 1980 1478 100.1 — — — — — — — 0.0% -2.00 — — — +0.08 — — — — — — — — — — — — — — — —
Career — 1687 120.8 — — — — +31 -16 +8 45.2% -0.23 24–28 (46%) 10–10 (50%) 100.1 +2.09 — 1505 105.5 — — — — +33 +16 +40 35.5% -0.97 2–7 (22%) — — +3.29

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.