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

Louise Allen vs Joni Van Ryck De Groot H2H: 1-0

Louise Allen holds a 1–0 lead over Joni Van Ryck De Groot in their WTA head-to-head. They have met 1 times in main draws. Most recently, Louise Allen won the 1981 Lakewood round of 32 6-3 6-0.

H2H
1 0
1 main-draw meetings

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Louise Allen 6-3 6-0 Joni Van Ryck De Groot Match data Jul 10, 1981* R32 Lakewood WTA 250

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
Louise Allen 1,758 67 100 40.1% 0 0 0 0 3 3
Joni Van Ryck De Groot 1,500 1 8 11.1% 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 Louise Allen Joni Van Ryck De Groot
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1980 3–2 60.0% 1,519 0 0
19 1981 6–5 54.5% 1,540 0 0
20 1982 22–5 81.5% 1,736 0 3
21 1983 3–7 30.0% 1,706 0 3
22 1984 0–1 0.0% 1,685 0 3
24 1986 0–4 0.0% 1,611 0 3
25 1987 3–8 27.3% 1,564 0 3 1980 0–4 0.0% 1,438 0 0
26 1988 5–8 38.5% 1,584 0 3 1981 0–2 0.0% 1,413 0 0
27 1989 9–15 37.5% 1,561 0 3 1982 1–2 33.3% 1,419 0 0
28 1990 2–9 18.2% 1,492 0 3
29 1991 2–8 20.0% 1,453 0 3
30 1992 10–14 41.7% 1,576 0 3
31 1993 2–14 12.5% 1,451 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 Louise Allen Joni Van Ryck De Groot
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 %
19 1981 0 1 1 0.0%
20 1982 13 4 17 76.5% 0 1 1 0.0%
21 1983 1 1 2 50.0% 0 3 3 0.0% 2 3 5 40.0%
22 1984 0 1 1 0.0%
24 1986 0 2 2 0.0% 0 1 1 0.0% 0 1 1 0.0%
25 1987 1 3 4 25.0% 2 2 4 50.0% 0 1 1 0.0% 0 2 2 0.0%
26 1988 5 7 12 41.7% 0 1 1 0.0%
27 1989 8 12 20 40.0% 0 1 1 0.0% 1 1 2 50.0% 0 1 1 0.0% 1982 0 1 1 0.0% 1 1 2 50.0%
28 1990 2 8 10 20.0% 0 1 1 0.0%
29 1991 2 6 8 25.0% 0 2 2 0.0%
30 1992 7 5 12 58.3% 1 4 5 20.0% 2 3 5 40.0% 0 2 2 0.0%
31 1993 1 6 7 14.3% 1 2 3 33.3% 0 3 3 0.0% 0 3 3 0.0%
Career 40 56 96 41.7% 4 16 20 20.0% 5 12 17 29.4% 0 10 10 0.0% 0 1 1 0.0% 1 1 2 50.0%

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 Louise Allen Joni Van Ryck De Groot
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
18 1980 1520 102.6 60.0% +0.40 2–0 1–0 +0.07
19 1981 1540 111.9 53.6% +0.64 3–3 (50%) 1–3 (25%) 98.7 -0.03
20 1982 1736 132.6 -16 75.4% +2.03 5–2 (71%) 2–2 (50%) 103.9 +2.84
21 1983 1706 117.7 -183 -107 33.3% -1.67 0–1 1–1 -0.80
22 1984 1686 96.2 33.3% -2.67 0–1 +0.11
24 1986 1612 101.4 20.0% -1.50 0–2 0–2 +0.38
25 1987 1565 110.9 +20 -55 32.0% -1.28 1–2 (33%) 1–2 (33%) 97.0 +0.16 1980 1438 87.1 11.1% -3.22 0–1 0–1 +0.16
26 1988 1584 119.3 -2 45.7% -0.20 3–6 (33%) 2–2 (50%) 97.4 -0.03 1981 1413 89.5 0.0% -4.75 +0.02
27 1989 1561 113.9 -23 43.1% -0.66 3–7 (30%) 5–2 (71%) 100.1 +0.22 1982 1419 105.9 33.3% -0.83 0–1 +0.29
28 1990 1493 106.1 -19 21.7% -1.39 0–1 0–3 (0%) +0.64
29 1991 1453 100.2 -9 31.8% -1.54 1–3 (25%) 1–0 +0.75
30 1992 1576 125.0 +2 -118 -27 41.8% -0.80 4–3 (57%) 2–2 (50%) 103.6 -0.19
31 1993 1452 91.9 +19 +6 +65 20.6% -2.12 1–3 (25%) 2–3 (40%) 96.2 +0.76
Career 1759 120.5 -7 -89 -37 43.6% -0.45 23–34 (40%) 18–22 (45%) 95.9 +2.92 1500 92.0 15.8% -2.79 0–1 0–2 +5.22

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.