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

Sandy Collins vs Roberta Mccallum H2H: 1-0

Sandy Collins holds a 1–0 lead over Roberta Mccallum in their WTA head-to-head. Across 1 main-draw meeting, Sandy Collins leads 1–0 on carpet. Most recently, Sandy Collins won the 1980 Dallas round of 32 5-7 6-3 6-0.

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

Sandy Collins
USA Age 67
H2H
1 – 0
1 main-draw meetings
Roberta Mccallum
USA Age 67

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Sandy Collins 5-7 6-3 6-0 Roberta Mccallum Match data Mar 6, 1980* R32 Dallas WTA 250 Carpet

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
Sandy Collins — — — 1,823 89 151 37.1% 0 0 0 0 0 0
Roberta Mccallum — — — 1,660 24 43 35.8% 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 Sandy Collins Roberta Mccallum
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
14 1973 1–1 50.0% — 1,497 0 0 — — — — — — —
19 1978 6–6 50.0% — 1,536 0 0 1978 0–1 0.0% — 1,484 0 0
20 1979 2–7 22.2% — 1,495 0 0 1979 6–5 54.5% — 1,573 0 0
21 1980 10–12 45.5% — 1,630 0 0 1980 14–27 34.1% — 1,582 0 0
22 1981 25–20 55.6% — 1,785 0 0 1981 4–9 30.8% — 1,568 0 0
23 1982 14–21 40.0% — 1,733 0 0 1982 0–1 0.0% — 1,549 0 0
24 1983 13–20 39.4% — 1,684 0 0 — — — — — — —
25 1984 9–18 33.3% — 1,599 0 0 — — — — — — —
26 1985 1–9 10.0% — 1,507 0 0 — — — — — — —
27 1986 0–1 0.0% — 1,499 0 0 — — — — — — —
28 1987 0–4 0.0% — 1,453 0 0 — — — — — — —
29 1988 3–5 37.5% — 1,490 0 0 — — — — — — —
30 1989 2–8 20.0% — 1,472 0 0 — — — — — — —
31 1990 1–9 10.0% — 1,421 0 0 — — — — — — —
32 1991 1–5 16.7% — 1,405 0 0 — — — — — — —
33 1992 1–2 33.3% — 1,412 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 Sandy Collins Roberta Mccallum
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% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
19 1978 2 2 4 50.0% 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
20 1979 0 1 1 0.0% 1 4 5 20.0% 1 1 2 50.0% 0 1 1 0.0% 1979 — — — — — — — — 3 4 7 42.9% — — — —
21 1980 4 6 10 40.0% 1 1 2 50.0% 0 1 1 0.0% 5 4 9 55.6% 1980 3 4 7 42.9% 0 3 3 0.0% 1 4 5 20.0% 10 16 26 38.5%
22 1981 4 5 9 44.4% 11 6 17 64.7% 3 2 5 60.0% 7 7 14 50.0% 1981 2 4 6 33.3% 0 1 1 0.0% 0 1 1 0.0% 2 3 5 40.0%
23 1982 3 2 5 60.0% 4 5 9 44.4% 0 2 2 0.0% 7 12 19 36.8% 1982 0 1 1 0.0% — — — — — — — — — — — —
24 1983 5 6 11 45.5% 2 6 8 25.0% 2 3 5 40.0% 4 5 9 44.4% — — — — — — — — — — — — — — — — —
25 1984 7 6 13 53.8% 0 3 3 0.0% 0 6 6 0.0% 2 3 5 40.0% — — — — — — — — — — — — — — — — —
26 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 — 33 55 88 37.5% 20 32 52 38.5% 6 24 30 20.0% 26 38 64 40.6% — 5 9 14 35.7% 0 4 4 0.0% 4 9 13 30.8% 12 19 31 38.7%

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 Sandy Collins Roberta Mccallum
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 — — — — — — — — — — — — — — — —
19 1978 1537 117.1 — — — — +89 — — 57.1% +0.64 0–4 (0%) — — +0.85 1978 1484 96.8 — — — — — — — 0.0% -3.50 — 0–1 — +0.04
20 1979 1495 107.9 — — — — — -5 — 30.0% -0.55 0–2 0–1 — +1.38 1979 1573 116.3 — — — — — — +15 50.0% -0.46 1–3 (25%) 1–0 — -0.41
21 1980 1631 128.8 — — — — +4 — — 48.9% +0.22 3–2 (60%) 1–2 (33%) 101.6 +0.03 1980 1582 127.2 — — — — +6 -80 -45 35.9% -1.14 5–5 (50%) 1–2 (33%) 99.9 +1.55
22 1981 1786 137.9 — — — — -48 -81 -187 52.6% -0.04 6–3 (67%) 5–4 (56%) 104.5 -1.75 1981 1568 107.3 — — — — +56 — — 33.3% -1.81 0–1 2–1 (67%) — +0.48
23 1982 1733 126.3 — — — — -17 -43 — 38.7% -0.91 6–3 (67%) 2–4 (33%) 103.2 -0.59 1982 1549 95.7 — — — — — — — 0.0% -4.00 — — — +0.17
24 1983 1684 124.1 — — — — +35 -29 -111 40.8% -0.63 2–3 (40%) 1–5 (17%) 95.5 -0.13 — — — — — — — — — — — — — — — —
25 1984 1600 117.7 — — — — +113 -7 -91 34.4% -0.97 4–5 (44%) 1–2 (33%) 98.9 -0.20 — — — — — — — — — — — — — — — —
26 1985 1508 99.2 — — — — +101 — — 18.2% -2.36 0–2 1–0 — +0.70 — — — — — — — — — — — — — — — —
27 1986 1500 101.5 — — — — — — — 33.3% -2.33 0–1 — — -0.02 — — — — — — — — — — — — — — — —
28 1987 1453 94.2 — — — — — — — 11.1% -2.56 0–1 — — +0.23 — — — — — — — — — — — — — — — —
29 1988 1491 114.4 — — — — +84 — — 42.1% -0.63 1–2 (33%) 1–3 (25%) 97.4 -0.02 — — — — — — — — — — — — — — — —
30 1989 1473 103.4 — — — — +55 — — 23.8% -1.71 0–1 2–0 — +0.37 — — — — — — — — — — — — — — — —
31 1990 1421 95.6 — — — — +39 +113 — 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 1407 95.8 — — — — — — — 0.0% -5.00 — — — -0.07 — — — — — — — — — — — — — — — —
35 1994 1393 103.0 — — — — — — — 33.3% -1.33 0–2 1–1 — -0.05 — — — — — — — — — — — — — — — —
Career — 1823 125.8 — — — — +27 -35 -127 39.2% -0.76 24–34 (41%) 15–24 (38%) 92.7 +0.78 — 1661 121.1 — — — — +19 -80 -10 36.6% -1.23 6–9 (40%) 4–4 (50%) 98.5 +2.73

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.