H2H data updated: 2026-07-18 14:16 UTC
Marcos Ondruska vs George Kalovelonis H2H: 1-0
Marcos Ondruska holds a 1–0 lead over George Kalovelonis in their ATP head-to-head. Across 1 main-draw meeting, Marcos Ondruska leads 1–0 on clay. Most recently, Marcos Ondruska won the 1994 Athens third round 6-2 6-0.
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RSA
Age 53
Right-Handed
183 cm / 6'0"
H2H
1
–
0
1 main draw meetings
GRE
Age 66
Right-Handed
190 cm / 6'3"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Oct 6, 1994* | Athens | ATP 250 | R32 | Clay | Marcos Ondruska | 6-2 6-0 | George Kalovelonis | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Marcos Ondruska | #1,352 | #27 | 1,007 | 1,785 | 105 | 137 | 43.4% | 0 | 0 | 0 | 0 | 0 | 0 |
| George Kalovelonis | #1,301 | #208 | 1 | 1,541 | 3 | 10 | 23.1% | 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 | Marcos Ondruska | George Kalovelonis | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | 1990 | 3–3 | 50.0% | #256 | 1,536 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1991 | 3–5 | 37.5% | #137 | 1,588 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | 1992 | 11–10 | 52.4% | #67 | 1,640 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 1993 | 26–29 | 47.3% | #47 | 1,568 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 1994 | 15–17 | 46.9% | #98 | 1,685 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 1995 | 16–19 | 45.7% | #114 | 1,664 | 0 | 0 | — | — | — | — | — | — | — |
| 23 | 1996 | 16–19 | 45.7% | #102 | 1,664 | 0 | 0 | 1983 | 1–1 | 50.0% | #576 | 1,522 | 0 | 0 |
| 24 | 1997 | 12–16 | 42.9% | #113 | 1,652 | 0 | 0 | 1984 | 0–1 | 0.0% | #283 | 1,519 | 0 | 0 |
| 25 | 1998 | 2–10 | 16.7% | #142 | 1,539 | 0 | 0 | — | — | — | — | — | — | — |
| 26 | 1999 | 0–2 | 0.0% | #159 | 1,518 | 0 | 0 | 1986 | 1–1 | 50.0% | #285 | 1,528 | 0 | 0 |
| 27 | 2000 | 0–5 | 0.0% | #204 | 1,476 | 0 | 0 | 1987 | 0–1 | 0.0% | #542 | 1,518 | 0 | 0 |
| 28 | 2001 | 1–2 | 33.3% | #263 | 1,568 | 0 | 0 | 1988 | 1–1 | 50.0% | #473 | 1,520 | 0 | 0 |
| 29 | — | — | — | — | — | — | — | 1989 | 0–1 | 0.0% | #1103 | 1,513 | 0 | 0 |
| 30 | — | — | — | — | — | — | — | 1990 | 0–1 | 0.0% | #1007 | 1,497 | 0 | 0 |
| 31 | — | — | — | — | — | — | — | 1991 | 0–1 | 0.0% | #1131 | 1,479 | 0 | 0 |
| 33 | — | — | — | — | — | — | — | 1993 | 0–1 | 0.0% | #1178 | 1,473 | 0 | 0 |
| 34 | — | — | — | — | — | — | — | 1994 | 0–1 | 0.0% | #1219 | 1,465 | 0 | 0 |