H2H data updated: 2026-09-05 00:00 UTC
Nicholas Kalogeropoulos holds a 1–0 lead over Vladimir Korotkov in their ATP head-to-head. Across 1 main-draw meeting, Nicholas Kalogeropoulos leads 1–0 on grass. Most recently, Nicholas Kalogeropoulos won the 1969 Wimbledon round of 64 2-6 6-4 6-3 3-6 6-3.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Nicholas Kalogeropoulos | 2-6 6-4 6-3 3-6 6-3 | Vladimir Korotkov | Match data | Jun 27, 1969* | R64 | Wimbledon | 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.
| 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 |
| Vladimir Korotkov | #396 | #113 | 0 | 1,657 | 24 | 20 | 54.5% | 0 | 0 | 0 | 0 | 0 | 0 |
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 | Vladimir Korotkov | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 20 | — | — | — | — | — | — | — | 1968 | 7–5 | 58.3% | — | 1,549 | 0 | 0 |
| 21 | — | — | — | — | — | — | — | 1969 | 4–2 | 66.7% | — | 1,583 | 0 | 0 |
| 22 | — | — | — | — | — | — | — | 1970 | 3–5 | 37.5% | — | 1,551 | 0 | 0 |
| 23 | 1968 | 13–13 | 50.0% | — | 1,533 | 0 | 0 | 1971 | 1–1 | 50.0% | — | 1,558 | 0 | 0 |
| 24 | 1969 | 9–10 | 47.4% | — | 1,587 | 0 | 0 | 1972 | 4–4 | 50.0% | — | 1,567 | 0 | 0 |
| 25 | 1970 | 10–6 | 62.5% | — | 1,661 | 0 | 0 | 1973 | 5–2 | 71.4% | #129 | 1,650 | 0 | 0 |
| 26 | 1971 | 4–7 | 36.4% | — | 1,655 | 0 | 0 | 1974 | 0–1 | 0.0% | #318 | 1,638 | 0 | 0 |
| 27 | 1972 | 5–8 | 38.5% | — | 1,641 | 0 | 0 | — | — | — | — | — | — | — |
| 28 | 1973 | 12–18 | 40.0% | #113 | 1,567 | 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 | — | — | — | — | — | — | — |
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 | Vladimir Korotkov | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| 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 | — | — | — | — | 0 | 1 | 1 | 0.0% | 4 | 3 | 7 | 57.1% | 3 | 1 | 4 | 75.0% |
| 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1969 | — | — | — | — | 3 | 1 | 4 | 75.0% | 1 | 1 | 2 | 50.0% | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1970 | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | 3 | 3 | 6 | 50.0% | — | — | — | — |
| 23 | 1968 | — | — | — | — | 12 | 11 | 23 | 52.2% | 1 | 2 | 3 | 33.3% | — | — | — | — | 1971 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| 24 | 1969 | 0 | 1 | 1 | 0.0% | 6 | 6 | 12 | 50.0% | 2 | 2 | 4 | 50.0% | 1 | 1 | 2 | 50.0% | 1972 | 1 | 1 | 2 | 50.0% | 3 | 2 | 5 | 60.0% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 25 | 1970 | 2 | 1 | 3 | 66.7% | 2 | 2 | 4 | 50.0% | 6 | 3 | 9 | 66.7% | — | — | — | — | 1973 | — | — | — | — | 5 | 2 | 7 | 71.4% | — | — | — | — | — | — | — | — |
| 26 | 1971 | 2 | 3 | 5 | 40.0% | 0 | 2 | 2 | 0.0% | 2 | 2 | 4 | 50.0% | — | — | — | — | 1974 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 27 | 1972 | — | — | — | — | 3 | 5 | 8 | 37.5% | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 1973 | 5 | 7 | 12 | 41.7% | 3 | 6 | 9 | 33.3% | 0 | 2 | 2 | 0.0% | 4 | 3 | 7 | 57.1% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 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% | — | 1 | 2 | 3 | 33.3% | 12 | 9 | 21 | 57.1% | 8 | 8 | 16 | 50.0% | 3 | 1 | 4 | 75.0% |
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 | Vladimir Korotkov | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1549 | 103.3 | — | — | — | — | +41 | — | +19 | 51.4% | -0.37 | 3–0 (100%) | — | — | +0.13 |
| 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1969 | 1584 | 107.5 | — | — | — | — | — | -21 | — | 61.9% | +0.52 | 1–1 | — | — | +0.04 |
| 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1970 | 1552 | 101.2 | — | — | — | — | — | — | -1 | 34.8% | -0.83 | 1–1 | 1–3 (25%) | — | +0.20 |
| 23 | 1968 | 1534 | 109.4 | — | — | — | — | — | +10 | — | 49.3% | -0.23 | 6–3 (67%) | — | — | +0.08 | 1971 | 1558 | 104.5 | — | — | — | — | — | — | — | 42.9% | -0.29 | — | — | — | +0.09 |
| 24 | 1969 | 1588 | 115.4 | — | — | — | — | -11 | -27 | -2 | 45.8% | -0.31 | 2–1 (67%) | — | — | +0.63 | 1972 | 1567 | 110.5 | — | — | — | — | — | +41 | — | 48.3% | +0.03 | 2–2 (50%) | 1–1 | — | +0.98 |
| 25 | 1970 | 1661 | 120.0 | — | — | — | — | -41 | -97 | +6 | 54.8% | +0.31 | 4–2 (67%) | — | — | +0.07 | 1973 | 1651 | 122.9 | — | — | — | — | — | +44 | — | 55.6% | +0.39 | 3–0 (100%) | — | — | +0.06 |
| 26 | 1971 | 1656 | 117.3 | — | — | — | — | -52 | — | +30 | 43.9% | -0.24 | 3–5 (38%) | 2–2 (50%) | 98.2 | -1.13 | 1974 | 1638 | 103.0 | — | — | — | — | — | — | — | 0.0% | -1.00 | — | 0–2 | — | -0.07 |
| 27 | 1972 | 1641 | 114.3 | — | — | — | — | — | -44 | +3 | 42.9% | -0.36 | 3–2 (60%) | 2–0 | — | -0.43 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 1973 | 1568 | 120.8 | — | — | — | — | +76 | -4 | — | 46.6% | +0.05 | 5–9 (36%) | 3–5 (38%) | 94.6 | +2.25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1974 | 1479 | 110.7 | — | — | — | — | +22 | — | — | 25.8% | -1.13 | 1–6 (14%) | 2–3 (40%) | 93.2 | +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 | — | 1658 | 114.0 | — | — | — | — | +41 | +27 | +10 | 48.9% | -0.13 | 10–4 (71%) | 2–6 (25%) | 103.4 | +3.33 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Ilie Nastase | 0 | 4 | 4 | Mar 25, 1973 | H2H |
| Clark Graebner | 1 | 3 | 4 | Feb 10, 1973 | H2H |
| Ian Fletcher | 2 | 1 | 3 | Feb 7, 1974 | H2H |
| Byron Bertram | 2 | 1 | 3 | Jan 26, 1974 | H2H |
| Ion Tiriac | 0 | 3 | 3 | Jan 28, 1973 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Tom Okker | 0 | 2 | 2 | Jun 7, 1973 | H2H |
| Michael Sangster | 2 | 0 | 2 | Jun 25, 1969 | — |
| Erik Van Dillen | 0 | 1 | 1 | May 28, 1974 | — |
| Manuel Orantes | 0 | 1 | 1 | Jul 21, 1973 | H2H |
| Martin Mulligan | 1 | 0 | 1 | Jul 20, 1973 | — |