H2H data updated: 2026-09-11 00:00 UTC

Mona Guerrant vs Nancy Ornstein H2H: 2-0

Mona Guerrant holds a 2–0 lead over Nancy Ornstein in their WTA head-to-head. Across 2 main-draw meetings, Mona Guerrant leads 1–0 on clay. Most recently, Mona Guerrant won the 1980 Gainesville quarterfinal 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.

Mona Guerrant
USA Age 77 Right-Handed
H2H
2 – 0
2 main-draw meetings
Nancy Ornstein
USA Age 74

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Mona Guerrant 6-2 6-1 Nancy Ornstein Match data May 24, 1980* QF Gainesville WTA 250 —
Mona Guerrant 6-4 6-4 Nancy Ornstein Match data Sep 13, 1973* R32 St. Louis 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.

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
Mona Guerrant — — — 1,941 122 116 51.3% 0 0 0 0 3 3
Nancy Ornstein — — — 1,567 41 81 33.6% 0 0 0 0 2 2

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 Mona Guerrant Nancy Ornstein
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1968 3–2 60.0% — 1,522 0 0
17 — — — — — — — 1969 0–3 0.0% — 1,506 0 0
18 — — — — — — — 1970 4–3 57.1% — 1,529 0 1
19 — — — — — — — 1971 2–7 22.2% — 1,505 0 1
20 1969 1–1 50.0% — 1,500 0 0 1972 4–14 22.2% — 1,488 0 1
21 1970 1–2 33.3% — 1,504 0 0 1973 0–6 0.0% — 1,459 0 1
22 1971 3–8 27.3% — 1,517 0 0 1974 5–9 35.7% — 1,454 0 1
23 1972 28–22 56.0% — 1,733 0 1 1975 5–11 31.2% — 1,449 0 1
24 1973 17–19 47.2% — 1,780 0 2 1976 1–5 16.7% — 1,425 0 1
25 1974 12–14 46.2% — 1,779 0 2 1977 6–5 54.5% — 1,509 0 1
26 1975 12–12 50.0% — 1,905 0 2 1978 1–3 25.0% — 1,504 0 1
27 1976 15–14 51.7% — 1,898 0 2 1979 4–4 50.0% — 1,528 0 2
28 1977 14–9 60.9% — 1,890 0 2 1980 5–6 45.5% — 1,534 0 2
29 1978 5–11 31.2% — 1,808 0 2 1981 1–3 25.0% — 1,504 0 2
31 1980 14–4 77.8% — 1,812 0 3 — — — — — — —

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 Mona Guerrant Nancy Ornstein
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 %
16 — — — — — — — — — — — — — — — — — 1968 0 1 1 0.0% 3 1 4 75.0% — — — — — — — —
17 — — — — — — — — — — — — — — — — — 1969 0 1 1 0.0% — — — — 0 2 2 0.0% — — — —
18 — — — — — — — — — — — — — — — — — 1970 3 0 3 100.0% 0 2 2 0.0% 1 1 2 50.0% — — — —
19 — — — — — — — — — — — — — — — — — 1971 0 2 2 0.0% 2 4 6 33.3% 0 1 1 0.0% — — — —
20 1969 — — — — 1 1 2 50.0% — — — — — — — — 1972 0 1 1 0.0% 2 5 7 28.6% 2 4 6 33.3% 0 4 4 0.0%
21 1970 — — — — 1 2 3 33.3% — — — — — — — — 1973 0 1 1 0.0% 0 2 2 0.0% 0 2 2 0.0% 0 1 1 0.0%
22 1971 0 2 2 0.0% 2 2 4 50.0% 1 4 5 20.0% — — — — 1974 2 1 3 66.7% 0 5 5 0.0% 0 1 1 0.0% — — — —
23 1972 4 3 7 57.1% 9 8 17 52.9% 14 9 23 60.9% 1 1 2 50.0% 1975 2 3 5 40.0% 1 2 3 33.3% 0 1 1 0.0% 1 2 3 33.3%
24 1973 3 4 7 42.9% 7 7 14 50.0% 2 4 6 33.3% 5 4 9 55.6% 1976 1 3 4 25.0% 0 1 1 0.0% — — — — 0 1 1 0.0%
25 1974 1 2 3 33.3% 0 3 3 0.0% 5 5 10 50.0% 6 4 10 60.0% 1977 1 1 2 50.0% — — — — — — — — 2 2 4 50.0%
26 1975 4 4 8 50.0% 3 2 5 60.0% 1 1 2 50.0% 4 5 9 44.4% 1978 — — — — 0 2 2 0.0% 1 1 2 50.0% — — — —
27 1976 2 3 5 40.0% 0 1 1 0.0% 5 2 7 71.4% 8 8 16 50.0% 1979 0 1 1 0.0% — — — — — — — — 0 1 1 0.0%
28 1977 2 2 4 50.0% 6 3 9 66.7% 4 2 6 66.7% 2 2 4 50.0% 1980 1 2 3 33.3% — — — — — — — — — — — —
29 1978 — — — — 2 2 4 50.0% 0 2 2 0.0% 3 7 10 30.0% — — — — — — — — — — — — — — — — —
31 1980 0 1 1 0.0% — — — — — — — — 2 1 3 66.7% — — — — — — — — — — — — — — — — —
Career — 16 21 37 43.2% 31 31 62 50.0% 32 29 61 52.5% 31 32 63 49.2% — 10 17 27 37.0% 8 24 32 25.0% 4 13 17 23.5% 3 11 14 21.4%

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 Mona Guerrant Nancy Ornstein
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
16 — — — — — — — — — — — — — — — — 1968 1523 108.0 — — — — — +35 — 60.0% +1.00 — — — +0.01
17 — — — — — — — — — — — — — — — — 1969 1506 99.8 — — — — — — — 0.0% -3.33 — — — -0.56
18 — — — — — — — — — — — — — — — — 1970 1529 102.0 — — — — +65 — — 47.1% -0.53 3–0 (100%) 0–1 — +1.06
19 — — — — — — — — — — — — — — — — 1971 1505 114.4 — — — — — +3 — 31.6% -1.10 1–2 (33%) 2–1 (67%) 99.5 +0.11
20 1969 1500 92.5 — — — — — — — 40.0% -2.40 1–0 — — +0.28 1972 1489 109.0 — — — — +28 +20 -5 21.6% -1.86 1–0 — — -0.49
21 1970 1504 106.4 — — — — — +14 — 42.9% -1.00 0–1 — — +0.10 1973 1460 89.7 — — — — — — — 0.0% -3.92 — — — -0.54
22 1971 1517 118.6 — — — — — +38 +14 35.7% -0.75 2–4 (33%) 0–3 (0%) 95.8 0.00 1974 1455 105.0 — — — — +67 -32 — 31.0% -1.52 2–1 (67%) 0–1 — -0.60
23 1972 1734 136.4 — — — — -121 -79 -58 56.3% +0.56 8–11 (42%) 5–0 (100%) 103.8 +0.32 1975 1449 101.6 — — — — +120 -15 — 28.1% -1.41 1–1 — — +1.12
24 1973 1781 144.7 — — — — -54 -77 -115 48.8% -0.15 3–5 (38%) 2–2 (50%) 99.8 -3.77 1976 1426 94.0 — — — — +63 — — 33.3% -1.73 0–3 (0%) 1–1 — +0.60
25 1974 1779 137.0 — — — — -26 -97 -75 50.9% +0.11 1–4 (20%) 3–4 (43%) 97.1 -1.56 1977 1509 111.1 — — — — +17 — — 48.0% +0.08 3–0 (100%) — — +1.06
26 1975 1906 154.1 — — — — -52 -116 — 48.2% -0.13 5–3 (63%) 2–4 (33%) 103.0 -3.85 1978 1504 96.3 — — — — — — — 25.0% -2.50 — — — -0.07
27 1976 1898 149.2 — — — — -30 — -110 55.9% +0.57 2–8 (20%) 2–5 (29%) 93.6 -2.51 1979 1528 107.1 — — — — — — — 52.9% 0.00 0–3 (0%) 2–1 (67%) — +0.70
28 1977 1890 136.0 — — — — -64 -47 -93 57.7% +0.69 4–4 (50%) 3–1 (75%) 100.8 -0.54 1980 1535 105.6 — — — — -64 — — 44.4% -0.78 — 1–0 — -0.40
29 1978 1809 135.5 — — — — -44 -17 — 35.9% -0.87 3–4 (43%) 0–3 (0%) — -2.29 1981 1504 101.1 — — — — — — — 33.3% -0.67 0–1 0–1 — -0.05
31 1980 1812 138.2 — — — — -108 — — 73.8% +2.26 4–2 (67%) 1–0 — +0.36 — — — — — — — — — — — — — — — —
Career — 1942 149.0 — — — — -53 -61 -71 52.5% +0.27 33–46 (42%) 18–22 (45%) 98.6 -5.68 — 1567 107.2 — — — — +52 +4 -5 33.5% -1.22 11–11 (50%) 6–6 (50%) 103.5 +1.64

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.