H2H data updated: 2026-10-29 00:00 UTC

Mariana Simionescu vs Ilana Kloss H2H: 1-0

Mariana Simionescu holds a 1–0 lead over Ilana Kloss in their WTA head-to-head. Across 1 main-draw meeting, Mariana Simionescu leads 1–0 on grass. Most recently, Mariana Simionescu won the 1974 Eastbourne Open round of 32 6-2 2-6 6-4.

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Mariana Simionescu
ROU Age 69
H2H
1 – 0
1 main-draw meetings
Ilana Kloss
RSA Age 70 Left-Handed 164 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Mariana Simionescu 6-2 2-6 6-4 Ilana Kloss Match data Jun 20, 1974* R32 Eastbourne Open WTA 250 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.

Career Comparison

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
Mariana Simionescu — — — 1,725 68 73 48.2% 0 0 0 0 2 2
Ilana Kloss — — — 1,890 135 145 48.2% 0 0 0 0 8 8

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 Mariana Simionescu Ilana Kloss
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
14 — — — — — — — 1970 0–1 0.0% — 1,491 0 0
15 — — — — — — — 1971 5–4 55.6% — 1,561 0 1
16 1973 5–8 38.5% — 1,515 0 0 1972 13–12 52.0% — 1,592 0 3
17 1974 13–12 52.0% — 1,591 0 0 1973 38–18 67.9% — 1,872 0 8
18 1975 10–14 41.7% — 1,614 0 0 1974 19–16 54.3% — 1,801 0 8
19 1976 15–13 53.6% — 1,691 0 1 1975 9–20 31.0% — 1,688 0 8
20 1977 7–8 46.7% — 1,703 0 1 1976 18–15 54.5% — 1,785 0 8
21 1978 9–11 45.0% — 1,677 0 1 1977 4–13 23.5% — 1,668 0 8
22 1979 0–3 0.0% — 1,621 0 1 1978 14–11 56.0% — 1,741 0 8
23 1980 9–4 69.2% — 1,703 0 2 1979 15–26 36.6% — 1,699 0 8
24 — — — — — — — 1980 0–8 0.0% — 1,605 0 8
26 — — — — — — — 1982 0–1 0.0% — 1,586 0 8

Surface Results by Age

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 Mariana Simionescu Ilana Kloss
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
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 %
14 — — — — — — — — — — — — — — — — — 1970 0 1 1 0.0% — — — — — — — — — — — —
15 — — — — — — — — — — — — — — — — — 1971 5 4 9 55.6% — — — — — — — — — — — —
16 1973 — — — — 1 3 4 25.0% 0 2 2 0.0% 4 3 7 57.1% 1972 8 7 15 53.3% 0 1 1 0.0% 3 4 7 42.9% — — — —
17 1974 0 1 1 0.0% 11 6 17 64.7% 2 4 6 33.3% 0 1 1 0.0% 1973 15 6 21 71.4% 14 7 21 66.7% 9 5 14 64.3% — — — —
18 1975 0 1 1 0.0% 8 7 15 53.3% 0 1 1 0.0% 0 2 2 0.0% 1974 8 5 13 61.5% 3 4 7 42.9% 2 3 5 40.0% 2 2 4 50.0%
19 1976 1 1 2 50.0% 9 7 16 56.3% 4 1 5 80.0% 1 4 5 20.0% 1975 1 9 10 10.0% 1 2 3 33.3% 1 2 3 33.3% 2 6 8 25.0%
20 1977 — — — — 1 3 4 25.0% 3 1 4 75.0% 3 3 6 50.0% 1976 3 2 5 60.0% 9 8 17 52.9% 5 4 9 55.6% 1 1 2 50.0%
21 1978 1 3 4 25.0% 4 3 7 57.1% 0 1 1 0.0% 1 2 3 33.3% 1977 1 1 2 50.0% 1 6 7 14.3% 2 2 4 50.0% 0 4 4 0.0%
22 1979 0 1 1 0.0% 0 1 1 0.0% 0 1 1 0.0% — — — — 1978 4 4 8 50.0% — — — — 9 4 13 69.2% 1 3 4 25.0%
23 1980 5 1 6 83.3% 4 3 7 57.1% — — — — — — — — 1979 2 7 9 22.2% 1 4 5 20.0% 4 5 9 44.4% 8 10 18 44.4%
24 — — — — — — — — — — — — — — — — — 1980 0 1 1 0.0% 0 2 2 0.0% 0 2 2 0.0% 0 3 3 0.0%
26 — — — — — — — — — — — — — — — — — 1982 — — — — — — — — 0 1 1 0.0% — — — —
Career — 7 8 15 46.7% 38 33 71 53.5% 9 11 20 45.0% 9 15 24 37.5% — 47 47 94 50.0% 29 34 63 46.0% 35 32 67 52.2% 14 29 43 32.6%

Advanced Statistics Comparison by Age

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 Mariana Simionescu Ilana Kloss
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
14 — — — — — — — — — — — — — — — — 1970 1491 97.3 — — — — — — — 0.0% -4.50 — — — +0.01
15 — — — — — — — — — — — — — — — — 1971 1562 111.3 — — — — +63 — — 57.9% +0.26 0–1 0–1 — +1.35
16 1973 1516 96.6 — — — — +72 -34 — 41.9% -0.71 2–3 (40%) 1–1 — +1.60 1972 1593 123.4 — — — — +46 — -33 54.5% +0.64 1–4 (20%) 0–2 — +3.97
17 1974 1591 117.5 — — — — — +8 -55 49.1% -0.27 4–3 (57%) 1–1 — +0.78 1973 1872 144.6 — — — — -17 -132 -190 66.4% +1.36 7–9 (44%) 2–1 (67%) 101.0 +4.65
18 1975 1614 121.8 — — — — -39 +35 — 43.6% -0.09 3–4 (43%) 1–5 (17%) 93.9 +0.46 1974 1802 136.3 — — — — +25 -83 -116 52.2% +0.16 1–4 (20%) 2–1 (67%) 97.5 -2.24
19 1976 1691 134.0 — — — — -127 -4 -76 56.1% +0.48 3–7 (30%) 2–2 (50%) 95.9 +1.01 1975 1688 127.3 — — — — -12 -4 -4 36.4% -0.99 2–8 (20%) 3–5 (38%) 91.8 -1.35
20 1977 1704 124.8 — — — — -116 -11 -56 50.0% -0.03 1–1 — — +1.49 1976 1785 138.9 — — — — -89 -30 -55 50.6% +0.13 8–3 (73%) 3–2 (60%) 108.5 -2.55
21 1978 1677 123.0 — — — — -80 +33 — 43.5% -0.22 4–4 (50%) 0–4 (0%) 96.9 +0.34 1977 1668 111.1 — — — — -42 +3 +35 28.2% -1.69 2–3 (40%) 2–1 (67%) 99.1 -0.31
22 1979 1622 95.0 — — — — — — — 0.0% -3.17 — — — +0.60 1978 1741 124.4 — — — — -84 — +34 55.9% +0.24 4–5 (44%) 5–6 (45%) 100.4 +1.14
23 1980 1703 116.1 — — — — -72 +10 — 64.5% +0.64 3–2 (60%) 3–1 (75%) 104.0 +0.89 1979 1700 127.2 — — — — -31 -53 +29 36.8% -1.15 10–5 (67%) 7–2 (78%) 110.6 -0.20
24 — — — — — — — — — — — — — — — — 1980 1605 102.3 — — — — -47 — — 5.9% -3.18 0–1 0–2 — -0.55
26 — — — — — — — — — — — — — — — — 1982 1586 97.0 — — — — — — — 33.3% -2.67 0–1 — — +0.16
Career — 1725 126.1 — — — — -61 +10 -62 48.8% -0.06 20–24 (45%) 8–14 (36%) 94.6 +5.16 — 1890 136.2 — — — — -13 -69 -49 48.6% -0.10 35–44 (44%) 24–23 (51%) 101.2 +1.47

Career Rivalries

Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.