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

Debbie Graham vs Mariaan De Swardt H2H: 0-1

Mariaan De Swardt holds a 1–0 lead over Debbie Graham in their WTA head-to-head. Across 1 main-draw meeting, Mariaan De Swardt leads 1–0 on clay. Most recently, Mariaan De Swardt won the 1992 Strasbourg Open quarterfinal 6-3 3-6 6-3.

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Debbie Graham
USA Age 56 Right-Handed 183 cm / 6'0"
H2H
0 – 1
1 main-draw meetings
Mariaan De Swardt
RSA Age 55 Right-Handed 177 cm / 5'10"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Mariaan De Swardt 6-3 3-6 6-3 Debbie Graham #47 Match data May 23, 1992* QF Strasbourg Open Tier IV → modern equivalent 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
Debbie Graham #729 #35 190 1,757 83 90 48.0% 0 0 0 0 0 0
Mariaan De Swardt — — — 1,788 66 83 44.3% 0 0 0 0 1 1

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 Debbie Graham Mariaan De Swardt
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 1987 1–1 50.0% — 1,502 0 0 — — — — — — —
17 1988 3–2 60.0% #138 1,547 0 0 1988 1–2 33.3% — 1,500 0 0
18 1989 2–4 33.3% #256 1,512 0 0 1989 0–1 0.0% — 1,498 0 0
19 1990 5–4 55.6% #121 1,581 0 0 — — — — — — —
20 1991 14–11 56.0% #42 1,685 0 0 1991 10–8 55.6% — 1,649 0 0
21 1992 21–19 52.5% #51 1,728 0 0 1992 7–10 41.2% — 1,589 0 0
22 1993 21–22 48.8% #65 1,683 0 0 1993 0–1 0.0% — 1,568 0 0
23 1994 8–10 44.4% #68 1,698 0 0 1994 3–4 42.9% — 1,602 0 0
24 1995 4–12 25.0% #131 1,598 0 0 1995 10–10 50.0% — 1,702 0 0
25 1996 4–5 44.4% #122 1,607 0 0 1996 7–12 36.8% — 1,679 0 0
26 — — — — — — — 1997 2–5 28.6% — 1,633 0 0
27 — — — — — — — 1998 17–10 63.0% — 1,766 0 1
28 — — — — — — — 1999 9–16 36.0% — 1,704 0 1
29 — — — — — — — 2000 0–2 0.0% — 1,658 0 1
30 — — — — — — — 2001 0–2 0.0% — 1,622 0 1

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 Debbie Graham Mariaan De Swardt
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 1987 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
17 1988 3 2 5 60.0% — — — — — — — — — — — — 1988 1 1 2 50.0% — — — — — — — — 0 1 1 0.0%
18 1989 2 2 4 50.0% — — — — 0 2 2 0.0% — — — — 1989 — — — — 0 1 1 0.0% — — — — — — — —
19 1990 2 2 4 50.0% 3 2 5 60.0% — — — — — — — — — — — — — — — — — — — — — — — — —
20 1991 12 8 20 60.0% 2 1 3 66.7% 0 1 1 0.0% 0 1 1 0.0% 1991 2 2 4 50.0% 4 4 8 50.0% 4 2 6 66.7% — — — —
21 1992 13 10 23 56.5% 5 6 11 45.5% 1 1 2 50.0% 2 2 4 50.0% 1992 0 4 4 0.0% 4 3 7 57.1% 3 2 5 60.0% 0 1 1 0.0%
22 1993 12 10 22 54.5% 7 6 13 53.8% 0 2 2 0.0% 2 4 6 33.3% 1993 — — — — — — — — — — — — 0 1 1 0.0%
23 1994 5 8 13 38.5% — — — — 0 1 1 0.0% 3 1 4 75.0% 1994 2 3 5 40.0% — — — — 1 1 2 50.0% — — — —
24 1995 1 3 4 25.0% 2 6 8 25.0% 0 1 1 0.0% 1 2 3 33.3% 1995 4 5 9 44.4% 1 3 4 25.0% 3 1 4 75.0% 2 1 3 66.7%
25 1996 3 4 7 42.9% — — — — — — — — 1 1 2 50.0% 1996 5 5 10 50.0% 2 4 6 33.3% 0 2 2 0.0% 0 1 1 0.0%
26 — — — — — — — — — — — — — — — — — 1997 0 1 1 0.0% 1 3 4 25.0% — — — — 1 1 2 50.0%
27 — — — — — — — — — — — — — — — — — 1998 9 3 12 75.0% 3 4 7 42.9% 5 3 8 62.5% — — — —
28 — — — — — — — — — — — — — — — — — 1999 2 8 10 20.0% 2 4 6 33.3% 4 3 7 57.1% 1 1 2 50.0%
29 — — — — — — — — — — — — — — — — — 2000 — — — — 0 1 1 0.0% 0 1 1 0.0% — — — —
30 — — — — — — — — — — — — — — — — — 2001 0 2 2 0.0% — — — — — — — — — — — —
Career — 54 50 104 51.9% 19 21 40 47.5% 1 8 9 11.1% 9 11 20 45.0% — 25 34 59 42.4% 17 27 44 38.6% 20 15 35 57.1% 4 7 11 36.4%

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 Debbie Graham Mariaan De Swardt
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 1987 1502 96.8 — — — — — — — 50.0% -1.00 — — — +0.39 — — — — — — — — — — — — — — — —
17 1988 1548 116.6 — — — — +36 — — 58.3% +0.50 1–1 1–0 — +0.73 1988 1500 103.6 — — — — +34 — — 42.9% -0.14 0–1 — — +0.21
18 1989 1512 95.4 — — — — +58 — — 33.3% -0.83 — 0–1 — +1.17 1989 1499 105.7 — — — — — — — 0.0% -3.00 — — — -0.27
19 1990 1582 122.4 — — — — +23 -2 — 52.4% -0.52 2–1 (67%) 1–0 — -0.27 — — — — — — — — — — — — — — — —
20 1991 1686 138.0 — — — — +16 -85 — 56.6% +0.40 1–4 (20%) 3–0 (100%) 98.8 +1.00 1991 1649 132.5 — — — — -78 -58 +9 52.5% +0.23 3–1 (75%) 4–3 (57%) 104.6 -0.49
21 1992 1729 136.9 — — — — +3 -79 — 51.6% +0.15 7–6 (54%) 4–4 (50%) 100.3 -1.24 1992 1589 110.1 — — — — -98 +40 +86 44.2% -0.14 4–5 (44%) 2–2 (50%) 99.8 +1.54
22 1993 1684 134.3 — — — — +3 +30 — 49.5% -0.04 4–5 (44%) 3–3 (50%) 98.7 -0.72 1993 1569 95.8 — — — — — — — 33.3% -1.67 0–1 — — +0.16
23 1994 1699 133.9 — — — — +10 — — 48.8% -0.05 4–5 (44%) 2–1 (67%) 100.7 +0.20 1994 1603 115.7 — — — — -91 — — 40.0% -1.40 1–0 2–0 — -0.74
24 1995 1599 119.1 — — — — +85 +25 — 37.1% -0.69 0–5 (0%) 0–3 (0%) 90.6 -0.23 1995 1703 135.4 — — — — -93 -97 +10 53.2% -0.13 2–5 (29%) 5–1 (83%) 102.8 +0.76
25 1996 1608 118.4 — — — — +59 — — 42.9% +0.10 2–1 (67%) 0–2 — +0.30 1996 1680 137.7 — — — — +6 -104 — 38.1% -0.81 2–4 (33%) 3–1 (75%) 99.2 -0.79
26 — — — — — — — — — — — — — — — — 1997 1633 100.6 — — — — +29 -65 — 21.4% -2.07 1–1 — — +0.08
27 — — — — — — — — — — — — — — — — 1998 1766 125.6 — — — — -19 -186 +5 56.7% +0.07 6–2 (75%) 8–1 (89%) 110.8 0.00
28 — — — — — — — — — — — — — — — — 1999 1705 131.5 — — — — -32 -134 +76 42.6% -0.44 1–5 (17%) 2–3 (40%) 96.1 -1.57
29 — — — — — — — — — — — — — — — — 2000 1659 96.7 — — — — — — — 20.0% -1.20 0–1 0–1 — +0.35
30 — — — — — — — — — — — — — — — — 2001 1622 97.8 — — — — — — — 0.0% -3.00 — 0–1 — -0.06
Career — 1757 137.8 — — — — +19 -14 — 49.4% -0.03 21–28 (43%) 14–14 (50%) 96.0 +0.77 — 1789 133.6 — — — — -41 -85 +37 45.2% -0.41 20–26 (43%) 26–13 (67%) 106.8 -0.55

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.