H2H data updated: 2026-09-12 00:00 UTC
Ulla Sandulf holds a 2–0 lead over Carol Ann Kalogeropoulos in their WTA head-to-head. Across 2 main-draw meetings, Ulla Sandulf leads 2–0 on clay. Most recently, Ulla Sandulf won the 1968 Italian Open round of 64 6-2 2-6 6-3.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Ulla Sandulf | 6-2 2-6 6-3 | Carol Ann Kalogeropoulos | Match data | May 8, 1968* | R64 | Italian Open | WTA 250 | Clay |
| Ulla Sandulf | 6-0 6-2 | Carol Ann Kalogeropoulos | Match data | Apr 25, 1968* | R32 | Naples | WTA 250 | Clay |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Carol Ann Kalogeropoulos | — | — | — | 1,500 | 7 | 44 | 13.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| Ulla Sandulf | — | — | — | 1,500 | 5 | 22 | 18.5% | 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 | Carol Ann Kalogeropoulos | Ulla Sandulf | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 25 | 1968 | 3–13 | 18.8% | — | 1,382 | 0 | 0 | 1968 | 3–10 | 23.1% | — | 1,425 | 0 | 0 |
| 26 | 1969 | 1–9 | 10.0% | — | 1,342 | 0 | 0 | 1969 | 0–6 | 0.0% | — | 1,357 | 0 | 0 |
| 27 | 1970 | 1–9 | 10.0% | — | 1,292 | 0 | 0 | 1970 | 2–3 | 40.0% | — | 1,370 | 0 | 0 |
| 28 | 1971 | 2–5 | 28.6% | — | 1,292 | 0 | 0 | 1971 | 0–1 | 0.0% | — | 1,369 | 0 | 0 |
| 29 | 1972 | 0–7 | 0.0% | — | 1,254 | 0 | 0 | 1972 | 0–2 | 0.0% | — | 1,358 | 0 | 0 |
| 30 | 1973 | 0–1 | 0.0% | — | 1,253 | 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 | Carol Ann Kalogeropoulos | Ulla Sandulf | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 25 | 1968 | — | — | — | — | 3 | 13 | 16 | 18.8% | — | — | — | — | — | — | — | — | 1968 | — | — | — | — | 3 | 9 | 12 | 25.0% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 26 | 1969 | — | — | — | — | 1 | 8 | 9 | 11.1% | 0 | 1 | 1 | 0.0% | — | — | — | — | 1969 | — | — | — | — | 0 | 5 | 5 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 27 | 1970 | — | — | — | — | 0 | 7 | 7 | 0.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | 1970 | — | — | — | — | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — |
| 28 | 1971 | 1 | 1 | 2 | 50.0% | 0 | 3 | 3 | 0.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | 1971 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 29 | 1972 | 0 | 2 | 2 | 0.0% | 0 | 2 | 2 | 0.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | 1972 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 30 | 1973 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1 | 3 | 4 | 25.0% | 4 | 34 | 38 | 10.5% | 2 | 6 | 8 | 25.0% | — | — | — | — | — | — | — | — | — | 5 | 19 | 24 | 20.8% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% |
Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. 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 | Carol Ann Kalogeropoulos | Ulla Sandulf | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 25 | 1968 | 1382 | 86.5 | — | — | — | — | — | -64 | — | 25.0% | -1.86 | 1–5 (17%) | — | — | +0.42 | 1968 | 1426 | 85.9 | — | — | — | — | — | -32 | — | 19.2% | -2.31 | 1–1 | — | — | +0.11 |
| 26 | 1969 | 1343 | 89.9 | — | — | — | — | — | -67 | — | 17.6% | -2.35 | 0–1 | — | — | +0.69 | 1969 | 1357 | 92.9 | — | — | — | — | — | -37 | — | 16.7% | -2.00 | 0–2 | — | — | +0.84 |
| 27 | 1970 | 1292 | 93.0 | — | — | — | — | — | -71 | — | 5.3% | -3.68 | 0–1 | — | — | +0.42 | 1970 | 1370 | 97.6 | — | — | — | — | — | -19 | — | 44.4% | 0.00 | 1–0 | — | — | +0.87 |
| 28 | 1971 | 1292 | 96.9 | — | — | — | — | — | -92 | — | 23.1% | -2.15 | 0–1 | — | — | +0.46 | 1971 | 1370 | 107.8 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | — | -0.13 |
| 29 | 1972 | 1255 | 78.5 | — | — | — | — | — | — | — | 0.0% | -4.36 | — | — | — | +0.32 | 1972 | 1359 | 96.6 | — | — | — | — | — | — | — | 0.0% | -3.00 | — | 0–1 | — | +0.19 |
| 30 | 1973 | 1254 | 102.0 | — | — | — | — | — | — | — | 0.0% | -4.00 | — | — | — | -0.12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1500 | 84.2 | — | — | — | — | — | -69 | — | 15.8% | -2.71 | 1–8 (11%) | — | — | +4.76 | — | 1500 | 90.6 | — | — | — | — | — | -30 | — | 21.6% | -1.94 | 2–3 (40%) | 0–1 | — | +7.23 |
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 |
|---|---|---|---|---|---|
| Fiorella Bonicelli | 1 | 2 | 3 | Jun 23, 1972 | H2H |
| Patti Hogan | 0 | 2 | 2 | May 9, 1973 | H2H |
| Maria Teresa Nasuelli | 0 | 2 | 2 | Sep 5, 1970 | H2H |
| Esme Emmanuel | 1 | 1 | 2 | Jun 19, 1970 | H2H |
| Alessandra Gobbo | 0 | 2 | 2 | Aug 26, 1969 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Maria Teresa Nasuelli | 0 | 3 | 3 | Aug 6, 1969 | H2H |
| Suzana Gesteira | 0 | 3 | 3 | Sep 6, 1968 | H2H |
| Pamela Austin | 0 | 2 | 2 | Apr 11, 1970 | H2H |
| Maria Teresa Riedl | 0 | 2 | 2 | Aug 10, 1968 | H2H |
| Carol Ann Kalogeropoulos | 2 | 0 | 2 | May 8, 1968 | H2H |