H2H data updated: 2026-09-12 00:00 UTC

Helen Kayser vs Mona Guerrant H2H: 1-0

Helen Kayser holds a 1–0 lead over Mona Guerrant in their WTA head-to-head. Across 1 main-draw meeting, Helen Kayser leads 1–0 on grass. Most recently, Helen Kayser won the 1972 Sydney International round of 32 1-6 6-2 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.

Helen Kayser
AUS
H2H
1 – 0
1 main-draw meetings
Mona Guerrant
USA Age 77 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Helen Kayser 1-6 6-2 6-1 Mona Guerrant Match data Jan 7, 1972* R32 Sydney International WTA 500 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
Helen Kayser — — — 1,500 8 18 30.8% 0 0 0 0 0 0
Mona Guerrant — — — 1,941 122 116 51.3% 0 0 0 0 3 3

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.

Helen Kayser Mona Guerrant
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1968 0–1 0.0% — 1,484 0 0 1969 1–1 50.0% — 1,500 0 0
1969 0–1 0.0% — 1,473 0 0 1970 1–2 33.3% — 1,504 0 0
1970 5–11 31.2% — 1,446 0 0 1971 3–8 27.3% — 1,517 0 0
1971 1–1 50.0% — 1,464 0 0 1972 28–22 56.0% — 1,733 0 1
1972 2–2 50.0% — 1,482 0 0 1973 17–19 47.2% — 1,780 0 2
1974 0–2 0.0% — 1,467 0 0 1974 12–14 46.2% — 1,779 0 2
— — — — — — — 1975 12–12 50.0% — 1,905 0 2
— — — — — — — 1976 15–14 51.7% — 1,898 0 2
— — — — — — — 1977 14–9 60.9% — 1,890 0 2
— — — — — — — 1978 5–11 31.2% — 1,808 0 2
— — — — — — — 1980 14–4 77.8% — 1,812 0 3

Surface Results by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Helen Kayser Mona Guerrant
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 %
1968 — — — — 0 1 1 0.0% — — — — — — — — 1969 — — — — 1 1 2 50.0% — — — — — — — —
1969 — — — — — — — — 0 1 1 0.0% — — — — 1970 — — — — 1 2 3 33.3% — — — — — — — —
1970 0 1 1 0.0% 2 4 6 33.3% 3 6 9 33.3% — — — — 1971 0 2 2 0.0% 2 2 4 50.0% 1 4 5 20.0% — — — —
1971 — — — — — — — — 1 1 2 50.0% — — — — 1972 4 3 7 57.1% 9 8 17 52.9% 14 9 23 60.9% 1 1 2 50.0%
1972 — — — — 0 1 1 0.0% 2 1 3 66.7% — — — — 1973 3 4 7 42.9% 7 7 14 50.0% 2 4 6 33.3% 5 4 9 55.6%
1974 — — — — — — — — 0 2 2 0.0% — — — — 1974 1 2 3 33.3% 0 3 3 0.0% 5 5 10 50.0% 6 4 10 60.0%
— — — — — — — — — — — — — — — — — 1975 4 4 8 50.0% 3 2 5 60.0% 1 1 2 50.0% 4 5 9 44.4%
— — — — — — — — — — — — — — — — — 1976 2 3 5 40.0% 0 1 1 0.0% 5 2 7 71.4% 8 8 16 50.0%
— — — — — — — — — — — — — — — — — 1977 2 2 4 50.0% 6 3 9 66.7% 4 2 6 66.7% 2 2 4 50.0%
— — — — — — — — — — — — — — — — — 1978 — — — — 2 2 4 50.0% 0 2 2 0.0% 3 7 10 30.0%
— — — — — — — — — — — — — — — — — 1980 0 1 1 0.0% — — — — — — — — 2 1 3 66.7%
Career 0 1 1 0.0% 2 6 8 25.0% 6 11 17 35.3% — — — — Career 16 21 37 43.2% 31 31 62 50.0% 32 29 61 52.5% 31 32 63 49.2%

Advanced Statistics Comparison by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Helen Kayser Mona Guerrant
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
1968 1485 96.5 — — — — — — — 0.0% -3.50 — — — +0.06 1969 1500 92.5 — — — — — — — 40.0% -2.40 1–0 — — +0.28
1969 1473 96.5 — — — — — — — 0.0% -4.00 — — — +0.13 1970 1504 106.4 — — — — — +14 — 42.9% -1.00 0–1 — — +0.10
1970 1447 98.9 — — — — — +26 +43 29.4% -1.09 2–2 (50%) — — +1.33 1971 1517 118.6 — — — — — +38 +14 35.7% -0.75 2–4 (33%) 0–3 (0%) 95.8 0.00
1971 1464 103.3 — — — — — — — 0.0% -5.00 — — — +0.23 1972 1734 136.4 — — — — -121 -79 -58 56.3% +0.56 8–11 (42%) 5–0 (100%) 103.8 +0.32
1972 1483 109.5 — — — — — — +58 44.4% 0.00 1–0 — — +0.01 1973 1781 144.7 — — — — -54 -77 -115 48.8% -0.15 3–5 (38%) 2–2 (50%) 99.8 -3.77
1974 1467 108.7 — — — — — — — 0.0% -3.25 — — — -0.18 1974 1779 137.0 — — — — -26 -97 -75 50.9% +0.11 1–4 (20%) 3–4 (43%) 97.1 -1.56
— — — — — — — — — — — — — — — — 1975 1906 154.1 — — — — -52 -116 — 48.2% -0.13 5–3 (63%) 2–4 (33%) 103.0 -3.85
— — — — — — — — — — — — — — — — 1976 1898 149.2 — — — — -30 — -110 55.9% +0.57 2–8 (20%) 2–5 (29%) 93.6 -2.51
— — — — — — — — — — — — — — — — 1977 1890 136.0 — — — — -64 -47 -93 57.7% +0.69 4–4 (50%) 3–1 (75%) 100.8 -0.54
— — — — — — — — — — — — — — — — 1978 1809 135.5 — — — — -44 -17 — 35.9% -0.87 3–4 (43%) 0–3 (0%) — -2.29
— — — — — — — — — — — — — — — — 1980 1812 138.2 — — — — -108 — — 73.8% +2.26 4–2 (67%) 1–0 — +0.36
Career 1500 103.9 — — — — — +26 +47 26.4% -1.42 3–2 (60%) — — +6.08 Career 1942 149.0 — — — — -53 -61 -71 52.5% +0.27 33–46 (42%) 18–22 (45%) 98.6 -5.68

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.