H2H data updated: 2026-09-13 00:00 UTC

Helga Masthoff vs Marcie Louie H2H: 1-0

Helga Masthoff holds a 1–0 lead over Marcie Louie in their WTA head-to-head. Across 1 main-draw meeting, Helga Masthoff leads 1–0 on grass. Most recently, Helga Masthoff won the 1973 US Open round of 64 6-4 6-1.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Helga Masthoff
FRG Age 84 Right-Handed
H2H
1 – 0
1 main-draw meetings
Marcie Louie
USA Age 73

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Helga Masthoff 6-4 6-1 Marcie Louie Match data Sep 1, 1973* R64 US Open Grand Slam 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
Helga Masthoff — — — 2,113 391 115 77.3% 0 0 0 4 46 50
Marcie Louie — — — 1,865 103 141 42.2% 0 0 0 0 4 4

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 Helga Masthoff Marcie Louie
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
14 — — — — — — — 1968 1–2 33.3% — 1,491 0 0
15 — — — — — — — 1969 4–1 80.0% — 1,545 0 1
16 — — — — — — — 1970 3–3 50.0% — 1,564 0 2
17 — — — — — — — 1971 4–3 57.1% — 1,593 0 3
18 — — — — — — — 1972 19–20 48.7% — 1,699 0 3
19 — — — — — — — 1973 7–20 25.9% — 1,626 0 3
20 — — — — — — — 1974 11–17 39.3% — 1,684 0 3
21 — — — — — — — 1975 16–15 51.6% — 1,784 0 4
22 — — — — — — — 1976 13–16 44.8% — 1,787 0 4
23 — — — — — — — 1977 11–22 33.3% — 1,649 0 4
24 — — — — — — — 1978 0–2 0.0% — 1,601 0 4
25 — — — — — — — 1979 2–5 28.6% — 1,609 0 4
26 1968 29–13 69.0% — 1,730 0 1 1980 10–10 50.0% — 1,609 0 4
27 1969 45–13 77.6% — 1,906 0 10 1981 2–3 40.0% — 1,609 0 4
28 1970 53–12 81.5% — 2,047 0 15 1982 0–2 0.0% — 1,576 0 4
29 1971 42–9 82.4% — 2,084 0 23 — — — — — — —
30 1972 29–12 70.7% — 2,023 0 27 — — — — — — —
31 1973 40–13 75.5% — 2,087 0 30 — — — — — — —
32 1974 27–10 73.0% — 2,019 0 33 — — — — — — —
33 1975 25–8 75.8% — 1,998 0 37 — — — — — — —
34 1976 34–8 81.0% — 1,950 0 42 — — — — — — —
35 1977 18–4 81.8% — 1,941 0 45 — — — — — — —
36 1978 13–5 72.2% — 1,895 0 45 — — — — — — —
37 1979 10–1 90.9% — 1,930 0 48 — — — — — — —
38 1980 26–7 78.8% — 1,873 0 50 — — — — — — —

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 Helga Masthoff Marcie Louie
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 — — — — — — — — — — — — — — — — — 1968 1 2 3 33.3% — — — — — — — — — — — —
15 — — — — — — — — — — — — — — — — — 1969 4 1 5 80.0% — — — — — — — — — — — —
16 — — — — — — — — — — — — — — — — — 1970 3 3 6 50.0% — — — — — — — — — — — —
17 — — — — — — — — — — — — — — — — — 1971 2 0 2 100.0% 1 1 2 50.0% 1 2 3 33.3% — — — —
18 — — — — — — — — — — — — — — — — — 1972 1 4 5 20.0% 6 7 13 46.2% 11 6 17 64.7% 1 3 4 25.0%
19 — — — — — — — — — — — — — — — — — 1973 2 4 6 33.3% 2 6 8 25.0% 0 2 2 0.0% 3 8 11 27.3%
20 — — — — — — — — — — — — — — — — — 1974 2 5 7 28.6% 2 3 5 40.0% 0 1 1 0.0% 7 8 15 46.7%
21 — — — — — — — — — — — — — — — — — 1975 3 5 8 37.5% 9 4 13 69.2% — — — — 4 6 10 40.0%
22 — — — — — — — — — — — — — — — — — 1976 4 3 7 57.1% 4 2 6 66.7% 1 3 4 25.0% 4 8 12 33.3%
23 — — — — — — — — — — — — — — — — — 1977 3 5 8 37.5% 2 8 10 20.0% — — — — 5 8 13 38.5%
24 — — — — — — — — — — — — — — — — — 1978 — — — — 0 1 1 0.0% 0 1 1 0.0% — — — —
25 — — — — — — — — — — — — — — — — — 1979 0 2 2 0.0% — — — — 0 1 1 0.0% 1 2 3 33.3%
26 1968 2 2 4 50.0% 22 7 29 75.9% 1 1 2 50.0% 4 3 7 57.1% 1980 1 2 3 33.3% 6 3 9 66.7% 0 2 2 0.0% 1 1 2 50.0%
27 1969 3 3 6 50.0% 39 7 46 84.8% — — — — 0 1 1 0.0% 1981 2 3 5 40.0% — — — — — — — — — — — —
28 1970 — — — — 45 10 55 81.8% 3 1 4 75.0% 5 1 6 83.3% 1982 0 2 2 0.0% — — — — — — — — — — — —
29 1971 5 2 7 71.4% 35 5 40 87.5% 2 2 4 50.0% — — — — — — — — — — — — — — — — — — — — —
30 1972 — — — — 28 8 36 77.8% 0 1 1 0.0% 1 3 4 25.0% — — — — — — — — — — — — — — — — —
31 1973 — — — — 34 10 44 77.3% 4 1 5 80.0% 2 2 4 50.0% — — — — — — — — — — — — — — — — —
32 1974 — — — — 24 8 32 75.0% 3 1 4 75.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
33 1975 — — — — 15 6 21 71.4% 9 2 11 81.8% — — — — — — — — — — — — — — — — — — — — —
34 1976 — — — — 29 5 34 85.3% 5 3 8 62.5% — — — — — — — — — — — — — — — — — — — — —
35 1977 — — — — 13 2 15 86.7% 1 2 3 33.3% 4 0 4 100.0% — — — — — — — — — — — — — — — — —
36 1978 — — — — 8 3 11 72.7% — — — — 3 1 4 75.0% — — — — — — — — — — — — — — — — —
37 1979 — — — — 5 1 6 83.3% — — — — — — — — — — — — — — — — — — — — — — — — —
38 1980 — — — — 23 6 29 79.3% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 10 7 17 58.8% 320 78 398 80.4% 28 14 42 66.7% 19 12 31 61.3% — 28 41 69 40.6% 32 35 67 47.8% 13 18 31 41.9% 26 44 70 37.1%

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 Helga Masthoff Marcie Louie
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 — — — — — — — — — — — — — — — — 1968 1492 100.8 — — — — +9 — — 42.9% -0.43 0–1 — — -0.04
15 — — — — — — — — — — — — — — — — 1969 1545 108.9 — — — — +74 — — 72.7% +1.73 1–0 — — +0.89
16 — — — — — — — — — — — — — — — — 1970 1565 106.0 — — — — +51 — — 46.2% +0.08 1–0 1–1 — +0.63
17 — — — — — — — — — — — — — — — — 1971 1593 107.1 — — — — — — -48 50.0% -0.42 — — — +1.18
18 — — — — — — — — — — — — — — — — 1972 1699 128.6 — — — — -98 -107 +10 47.1% -0.29 5–2 (71%) 1–2 (33%) 103.2 -3.23
19 — — — — — — — — — — — — — — — — 1973 1627 126.7 — — — — -36 -91 — 24.6% -1.54 3–2 (60%) 3–4 (43%) 100.9 -3.41
20 — — — — — — — — — — — — — — — — 1974 1684 131.0 — — — — -38 -120 — 40.0% -0.75 5–4 (56%) 4–1 (80%) 105.8 -1.83
21 — — — — — — — — — — — — — — — — 1975 1784 141.4 — — — — -69 -51 — 49.3% -0.27 4–3 (57%) 6–1 (86%) 106.0 -1.61
22 — — — — — — — — — — — — — — — — 1976 1788 133.0 — — — — -63 -23 -148 45.2% -0.10 6–2 (75%) 2–7 (22%) 101.6 -2.81
23 — — — — — — — — — — — — — — — — 1977 1649 127.8 — — — — +26 +9 — 35.1% -1.01 6–5 (55%) 3–6 (33%) 99.4 -0.50
24 — — — — — — — — — — — — — — — — 1978 1602 95.4 — — — — — — — 0.0% -2.25 — — — +0.67
25 — — — — — — — — — — — — — — — — 1979 1610 120.6 — — — — +45 — — 31.3% -1.81 1–1 — — -0.60
26 1968 1730 128.1 — — — — -162 +89 — 66.7% +1.31 7–8 (47%) — — -1.04 1980 1609 110.6 — — — — +2 +54 — 47.7% -0.20 3–3 (50%) 0–1 — +0.67
27 1969 1907 137.1 — — — — -313 +115 — 74.0% +1.89 8–7 (53%) — — -0.20 1981 1609 104.8 — — — — +37 — — 36.4% -1.27 1–0 2–0 — +0.25
28 1970 2047 159.4 — — — — -330 +75 -427 79.6% +2.22 6–5 (55%) — — -5.92 1982 1576 93.4 — — — — — — — 0.0% -3.00 — — — +0.12
29 1971 2084 146.6 — — — — -311 +124 -455 72.0% +1.78 17–3 (85%) 2–2 (50%) 105.8 -1.82 — — — — — — — — — — — — — — — —
30 1972 2024 152.0 — — — — -290 +162 — 69.4% +1.51 4–1 (80%) 3–0 (100%) — -3.25 — — — — — — — — — — — — — — — —
31 1973 2088 160.2 — — — — -369 +126 -344 72.2% +1.77 8–3 (73%) 3–5 (38%) 101.3 -2.46 — — — — — — — — — — — — — — — —
32 1974 2019 153.9 — — — — — +99 -212 67.5% +1.24 8–2 (80%) 2–2 (50%) 102.8 -3.17 — — — — — — — — — — — — — — — —
33 1975 1999 142.8 — — — — — +76 -105 71.6% +1.26 7–3 (70%) 6–3 (67%) 104.5 -0.41 — — — — — — — — — — — — — — — —
34 1976 1951 146.9 — — — — — +125 -61 76.1% +2.14 6–2 (75%) 1–2 (33%) 99.7 +1.10 — — — — — — — — — — — — — — — —
35 1977 1941 128.5 — — — — -150 +143 -91 75.5% +1.73 4–1 (80%) 3–1 (75%) 103.1 +2.07 — — — — — — — — — — — — — — — —
36 1978 1895 134.2 — — — — -97 +128 — 68.4% +1.55 2–2 (50%) 1–0 — +1.22 — — — — — — — — — — — — — — — —
37 1979 1930 131.0 — — — — — +128 — 85.7% +2.86 1–0 1–1 — +0.26 — — — — — — — — — — — — — — — —
38 1980 1873 133.5 — — — — — +139 — 73.1% +1.86 7–5 (58%) 3–2 (60%) 97.5 +1.56 — — — — — — — — — — — — — — — —
Career — 2114 153.3 — — — — -250 +115 -205 72.9% +1.76 85–42 (67%) 25–18 (58%) 104.1 -2.42 — 1866 133.0 — — — — -23 -46 -24 41.3% -0.61 36–23 (61%) 22–23 (49%) 108.5 -3.96

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.