H2H data updated: 2026-10-21 00:00 UTC

Barbara Hallquist vs Sandy Collins H2H: 1-0

Barbara Hallquist holds a 1–0 lead over Sandy Collins in their WTA head-to-head. Across 1 main-draw meeting, Barbara Hallquist leads 1–0 on grass. Most recently, Barbara Hallquist won the 1982 Eastbourne Open round of 64 6-4 1-6 7-5.

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

Barbara Hallquist
USA Age 69
H2H
1 – 0
1 main-draw meetings
Sandy Collins
USA Age 68

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Barbara Hallquist 6-4 1-6 7-5 Sandy Collins Match data Jun 16, 1982* R64 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
Barbara Hallquist — — — 1,778 67 90 42.7% 0 0 0 0 0 0
Sandy Collins — — — 1,824 90 152 37.2% 0 0 0 0 0 0

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 Barbara Hallquist Sandy Collins
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
14 — — — — — — — 1973 1–1 50.0% — 1,497 0 0
16 1973 2–1 66.7% — 1,516 0 0 — — — — — — —
17 1974 2–3 40.0% — 1,500 0 0 — — — — — — —
18 1975 3–1 75.0% — 1,541 0 0 — — — — — — —
19 1976 0–1 0.0% — 1,530 0 0 1978 7–7 50.0% — 1,541 0 0
20 1977 4–2 66.7% — 1,577 0 0 1979 2–7 22.2% — 1,498 0 0
21 1978 8–9 47.1% — 1,616 0 0 1980 10–12 45.5% — 1,632 0 0
22 1979 3–13 18.8% — 1,565 0 0 1981 25–20 55.6% — 1,787 0 0
23 1980 14–13 51.9% — 1,703 0 0 1982 14–21 40.0% — 1,734 0 0
24 1981 14–17 45.2% — 1,737 0 0 1983 13–20 39.4% — 1,684 0 0
25 1982 12–14 46.2% — 1,707 0 0 1984 9–18 33.3% — 1,600 0 0
26 1983 5–16 23.8% — 1,567 0 0 1985 1–9 10.0% — 1,508 0 0
27 — — — — — — — 1986 0–1 0.0% — 1,500 0 0
28 — — — — — — — 1987 0–4 0.0% — 1,453 0 0
29 — — — — — — — 1988 3–5 37.5% — 1,491 0 0
30 — — — — — — — 1989 2–8 20.0% — 1,473 0 0
31 — — — — — — — 1990 1–9 10.0% — 1,421 0 0
32 — — — — — — — 1991 1–5 16.7% — 1,406 0 0
33 — — — — — — — 1992 1–2 33.3% — 1,413 0 0
34 — — — — — — — 1993 0–1 0.0% — 1,407 0 0
35 — — — — — — — 1994 0–2 0.0% — 1,393 0 0

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 Barbara Hallquist Sandy Collins
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 — — — — — — — — — — — — — — — — — 1973 1 1 2 50.0% — — — — — — — — — — — —
16 1973 2 1 3 66.7% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
17 1974 2 2 4 50.0% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
18 1975 — — — — — — — — 3 1 4 75.0% — — — — — — — — — — — — — — — — — — — — —
19 1976 — — — — 0 1 1 0.0% — — — — — — — — 1978 3 3 6 50.0% 0 1 1 0.0% 0 1 1 0.0% — — — —
20 1977 — — — — 1 1 2 50.0% — — — — — — — — 1979 0 1 1 0.0% 1 4 5 20.0% 1 1 2 50.0% 0 1 1 0.0%
21 1978 3 4 7 42.9% 0 1 1 0.0% 1 2 3 33.3% — — — — 1980 4 6 10 40.0% 1 1 2 50.0% 0 1 1 0.0% 5 4 9 55.6%
22 1979 3 4 7 42.9% 0 1 1 0.0% 0 6 6 0.0% 0 2 2 0.0% 1981 4 5 9 44.4% 11 6 17 64.7% 3 2 5 60.0% 7 7 14 50.0%
23 1980 7 8 15 46.7% 2 2 4 50.0% 5 3 8 62.5% — — — — 1982 3 2 5 60.0% 4 5 9 44.4% 0 2 2 0.0% 7 12 19 36.8%
24 1981 7 6 13 53.8% — — — — 7 6 13 53.8% 0 5 5 0.0% 1983 5 6 11 45.5% 2 6 8 25.0% 2 3 5 40.0% 4 5 9 44.4%
25 1982 7 5 12 58.3% 0 3 3 0.0% 5 6 11 45.5% — — — — 1984 7 6 13 53.8% 0 3 3 0.0% 0 6 6 0.0% 2 3 5 40.0%
26 1983 3 8 11 27.3% 0 3 3 0.0% 1 3 4 25.0% 1 2 3 33.3% 1985 1 5 6 16.7% 0 1 1 0.0% 0 2 2 0.0% 0 1 1 0.0%
27 — — — — — — — — — — — — — — — — — 1986 — — — — — — — — 0 1 1 0.0% — — — —
28 — — — — — — — — — — — — — — — — — 1987 0 2 2 0.0% — — — — 0 2 2 0.0% — — — —
29 — — — — — — — — — — — — — — — — — 1988 3 4 7 42.9% — — — — 0 1 1 0.0% — — — —
30 — — — — — — — — — — — — — — — — — 1989 1 5 6 16.7% — — — — 0 1 1 0.0% 1 2 3 33.3%
31 — — — — — — — — — — — — — — — — — 1990 0 5 5 0.0% 1 3 4 25.0% — — — — 0 1 1 0.0%
32 — — — — — — — — — — — — — — — — — 1991 1 2 3 33.3% 0 1 1 0.0% 0 1 1 0.0% 0 1 1 0.0%
33 — — — — — — — — — — — — — — — — — 1992 1 1 2 50.0% 0 1 1 0.0% — — — — — — — —
34 — — — — — — — — — — — — — — — — — 1993 — — — — — — — — — — — — 0 1 1 0.0%
35 — — — — — — — — — — — — — — — — — 1994 0 2 2 0.0% — — — — — — — — — — — —
Career — 34 38 72 47.2% 3 12 15 20.0% 22 28 50 44.0% 1 9 10 10.0% — 34 56 90 37.8% 20 32 52 38.5% 6 24 30 20.0% 26 38 64 40.6%

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 Barbara Hallquist Sandy Collins
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 — — — — — — — — — — — — — — — — 1973 1497 99.4 — — — — — — — 50.0% 0.00 — — — +0.62
16 1973 1516 110.1 — — — — +80 — — 66.7% +2.33 — — — +0.83 — — — — — — — — — — — — — — — —
17 1974 1500 97.3 — — — — +94 — — 38.5% -0.85 2–1 (67%) 0–1 — +1.26 — — — — — — — — — — — — — — — —
18 1975 1541 102.9 — — — — — — +36 60.0% +0.60 2–0 1–1 — +0.62 — — — — — — — — — — — — — — — —
19 1976 1530 102.4 — — — — — — — 33.3% -1.00 0–1 — — +0.08 1978 1541 118.0 — — — — +85 — — 56.3% +0.66 0–4 (0%) — — +1.24
20 1977 1578 113.0 — — — — — — — 57.1% +0.21 2–0 1–0 — +0.30 1979 1498 107.8 — — — — — -8 — 30.0% -0.55 0–2 0–1 — +1.31
21 1978 1616 117.7 — — — — +29 — -43 48.6% -0.16 3–2 (60%) 2–1 (67%) — +0.13 1980 1632 129.0 — — — — +7 — — 48.9% +0.22 3–2 (60%) 1–2 (33%) 101.5 -0.07
22 1979 1566 114.8 — — — — +87 — -68 27.0% -1.76 3–4 (43%) 0–1 — -0.92 1981 1787 138.1 — — — — -48 -82 -188 52.6% -0.04 6–3 (67%) 5–4 (56%) 104.5 -1.55
23 1980 1704 131.6 — — — — -27 -213 -91 52.4% -0.19 4–5 (44%) 6–1 (86%) 104.8 -1.47 1982 1734 126.6 — — — — -17 -44 — 38.7% -0.91 6–3 (67%) 2–4 (33%) 103.2 -0.37
24 1981 1737 128.5 — — — — -9 — -69 43.2% -0.74 8–4 (67%) 2–0 — -2.02 1983 1685 124.3 — — — — +34 -29 -111 40.8% -0.63 2–3 (40%) 1–5 (17%) 95.5 -0.09
25 1982 1708 102.3 — — — — -1 -251 -62 44.1% -0.80 5–2 (71%) 4–4 (50%) 102.9 -0.55 1984 1601 117.8 — — — — +112 -8 -91 34.4% -0.97 4–5 (44%) 1–2 (33%) 98.9 -0.22
26 1983 1568 105.1 — — — — +49 -96 +31 28.3% -1.37 1–3 (25%) 0–3 (0%) 93.9 +0.62 1985 1508 99.3 — — — — +102 — — 18.2% -2.36 0–2 1–0 — +0.69
27 — — — — — — — — — — — — — — — — 1986 1500 101.5 — — — — — — — 33.3% -2.33 0–1 — — -0.03
28 — — — — — — — — — — — — — — — — 1987 1454 94.2 — — — — — — — 11.1% -2.56 0–1 — — +0.23
29 — — — — — — — — — — — — — — — — 1988 1491 114.4 — — — — +85 — — 42.1% -0.63 1–2 (33%) 1–3 (25%) 97.4 -0.02
30 — — — — — — — — — — — — — — — — 1989 1473 103.5 — — — — +56 — — 23.8% -1.71 0–1 2–0 — +0.43
31 — — — — — — — — — — — — — — — — 1990 1422 95.6 — — — — +39 +112 — 17.4% -2.65 1–2 (33%) — — +0.17
32 — — — — — — — — — — — — — — — — 1991 1406 104.6 — — — — +39 — — 21.4% -2.00 1–1 0–1 — +0.16
33 — — — — — — — — — — — — — — — — 1992 1413 104.4 — — — — — — — 33.3% -0.83 — 0–1 — +0.18
34 — — — — — — — — — — — — — — — — 1993 1408 95.8 — — — — — — — 0.0% -5.00 — — — -0.07
35 — — — — — — — — — — — — — — — — 1994 1394 103.0 — — — — — — — 33.3% -1.33 0–2 1–1 — -0.05
Career — 1778 121.7 — — — — +21 -189 -53 43.1% -0.66 30–22 (58%) 16–12 (57%) 106.7 -0.71 — 1825 126.0 — — — — +28 -36 -128 39.2% -0.75 24–34 (41%) 15–24 (38%) 92.7 +1.07

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.