H2H data updated: 2026-07-18 02:15 UTC
Nicholas Kalogeropoulos vs Clark Graebner H2H: 1-3
Clark Graebner holds a 3–1 lead over Nicholas Kalogeropoulos in their ATP head-to-head. Across 4 main-draw meetings, Clark Graebner leads 2–0 on grass, while Nicholas Kalogeropoulos leads 1–0 on carpet. Most recently, Clark Graebner won the 1973 Des Moines final 7-5 4-6 6-4.
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GRE
Age 81
Right-Handed
H2H
1
–
3
4 main draw meetings
USA
Age 82
Right-Handed
188 cm / 6'2"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Feb 10, 1973* | Des Moines | ATP 250 | F | Hard | Clark Graebner | 7-5 4-6 6-4 | Nicholas Kalogeropoulos | Match data |
| Jun 13, 1970* | Beckenham | ATP 250 | SF | Grass | Clark Graebner | 6-1 6-3 | Nicholas Kalogeropoulos | Match data |
| Jun 17, 1969* | London / Queen's Club | ATP 250 | R128 | Grass | Clark Graebner | (w/o) | Nicholas Kalogeropoulos | Match data |
| Feb 20, 1969* | Macon | ATP 250 | R32 | Carpet | Nicholas Kalogeropoulos | 6-2 10-12 6-3 | Clark Graebner | Match data |
* Estimated match date where the exact historical date is unavailable.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nicholas Kalogeropoulos | #511 | #108 | 0 | 1,681 | 53 | 74 | 41.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| Clark Graebner | #199 | #45 | 0 | 2,015 | 342 | 162 | 67.9% | 0 | 0 | 0 | 0 | 12 | 12 |
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 | Clark Graebner | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 23 | 1968 | 11–12 | 47.8% | — | 1,510 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 1969 | 9–10 | 47.4% | — | 1,568 | 0 | 0 | 1968 | 74–22 | 77.1% | — | 1,820 | 0 | 2 |
| 25 | 1970 | 10–6 | 62.5% | — | 1,652 | 0 | 0 | 1969 | 49–14 | 77.8% | — | 1,842 | 0 | 6 |
| 26 | 1971 | 4–7 | 36.4% | — | 1,649 | 0 | 0 | 1970 | 58–28 | 67.4% | — | 1,839 | 0 | 8 |
| 27 | 1972 | 5–8 | 38.5% | — | 1,636 | 0 | 0 | 1971 | 75–29 | 72.1% | — | 1,878 | 0 | 11 |
| 28 | 1973 | 12–18 | 40.0% | #113 | 1,565 | 0 | 0 | 1972 | 33–22 | 60.0% | — | 1,812 | 0 | 11 |
| 29 | 1974 | 1–11 | 8.3% | #245 | 1,477 | 0 | 0 | 1973 | 34–19 | 64.2% | #48 | 1,768 | 0 | 12 |
| 30 | — | — | — | — | — | — | — | 1974 | 11–14 | 44.0% | #99 | 1,685 | 0 | 12 |
| 31 | — | — | — | — | — | — | — | 1975 | 8–11 | 42.1% | #120 | 1,580 | 0 | 12 |
| 32 | — | — | — | — | — | — | — | 1976 | 0–3 | 0.0% | #199 | 1,537 | 0 | 12 |
| 34 | 1979 | 1–1 | 50.0% | #511 | 1,487 | 0 | 0 | — | — | — | — | — | — | — |
| 35 | 1980 | 0–1 | 0.0% | — | 1,476 | 0 | 0 | — | — | — | — | — | — | — |