H2H data updated: 2026-07-18 02:15 UTC
Byron Bertram vs Nicholas Kalogeropoulos H2H: 1-2
Nicholas Kalogeropoulos holds a 2–1 lead over Byron Bertram in their ATP head-to-head. Across 3 main-draw meetings, they are tied 1–1 on carpet, while Nicholas Kalogeropoulos leads 1–0 on grass. Most recently, Byron Bertram won the 1974 Omaha fourth round 7-6 6-1.
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RSA
Age 73
Right-Handed
H2H
1
–
2
3 main draw meetings
GRE
Age 81
Right-Handed
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Jan 26, 1974* | Omaha | ATP 250 | R16 | Carpet | Byron Bertram | 7-6 6-1 | Nicholas Kalogeropoulos | Match data |
| Mar 24, 1973* | Washington 2 | ATP 250 | R16 | Carpet | Nicholas Kalogeropoulos | 6-3 6-0 | Byron Bertram | Match data |
| Jun 13, 1970* | Beckenham | ATP 250 | QF | Grass | Nicholas Kalogeropoulos | 6-4 6-1 | Byron Bertram | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Byron Bertram | #150 | #51 | 0 | 1,810 | 113 | 138 | 45.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Nicholas Kalogeropoulos | #511 | #108 | 0 | 1,681 | 53 | 74 | 41.7% | 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 | Byron Bertram | Nicholas Kalogeropoulos | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | 1969 | 0–3 | 0.0% | — | 1,466 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 1970 | 11–11 | 50.0% | — | 1,540 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1971 | 9–13 | 40.9% | — | 1,542 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | 1972 | 2–2 | 50.0% | — | 1,532 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 1973 | 11–10 | 52.4% | #152 | 1,609 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 1974 | 15–13 | 53.6% | #156 | 1,649 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 1975 | 5–8 | 38.5% | #120 | 1,650 | 0 | 0 | — | — | — | — | — | — | — |
| 23 | 1976 | 21–23 | 47.7% | #57 | 1,728 | 0 | 0 | 1968 | 11–12 | 47.8% | — | 1,510 | 0 | 0 |
| 24 | 1977 | 21–27 | 43.8% | #84 | 1,741 | 0 | 0 | 1969 | 9–10 | 47.4% | — | 1,568 | 0 | 0 |
| 25 | 1978 | 10–11 | 47.6% | #92 | 1,664 | 0 | 0 | 1970 | 10–6 | 62.5% | — | 1,652 | 0 | 0 |
| 26 | 1979 | 1–2 | 33.3% | #219 | 1,646 | 0 | 0 | 1971 | 4–7 | 36.4% | — | 1,649 | 0 | 0 |
| 27 | 1980 | 7–15 | 31.8% | #150 | 1,567 | 0 | 0 | 1972 | 5–8 | 38.5% | — | 1,636 | 0 | 0 |
| 28 | — | — | — | — | — | — | — | 1973 | 12–18 | 40.0% | #113 | 1,565 | 0 | 0 |
| 29 | — | — | — | — | — | — | — | 1974 | 1–11 | 8.3% | #245 | 1,477 | 0 | 0 |
| 34 | — | — | — | — | — | — | — | 1979 | 1–1 | 50.0% | #511 | 1,487 | 0 | 0 |
| 35 | — | — | — | — | — | — | — | 1980 | 0–1 | 0.0% | — | 1,476 | 0 | 0 |