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

Naoko Sato vs Betsy Nagelsen H2H: 0-4

Betsy Nagelsen holds a 4–0 lead over Naoko Sato in their WTA head-to-head. Across 4 main-draw meetings, Betsy Nagelsen leads 2–0 on grass. Most recently, Betsy Nagelsen won the 1984 Brisbane International round of 64 7-6 6-4.

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Naoko Sato
JPN Age 71
H2H
0 – 4
4 main-draw meetings
Betsy Nagelsen
USA Age 69 Right-Handed 175 cm / 5'9"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Betsy Nagelsen #71 7-6 6-4 Naoko Sato Match data Nov 14, 1984* R64 Brisbane International WTA 500 Grass
Betsy Nagelsen 6-1 3-6 6-3 Naoko Sato Match data Oct 28, 1979* F Tokyo Japan Open WTA 250 —
Betsy Nagelsen 6-3 6-4 Naoko Sato Match data Oct 21, 1979* F Kyoto WTA 250 —
Betsy Nagelsen 6-3 6-2 Naoko Sato Match data Jun 14, 1974* R16 Beckenham 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
Naoko Sato — — — 1,628 56 91 38.1% 0 0 0 0 0 0
Betsy Nagelsen #692 #25 28 1,890 266 324 45.1% 0 0 0 0 6 6

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 Naoko Sato Betsy Nagelsen
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
15 — — — — — — — 1972 4–2 66.7% — 1,511 0 1
16 — — — — — — — 1973 1–3 25.0% — 1,494 0 1
17 1972 2–3 40.0% — 1,504 0 0 1974 27–18 60.0% — 1,724 0 3
18 1973 4–6 40.0% — 1,495 0 0 1975 18–17 51.4% — 1,790 0 3
19 1974 7–16 30.4% — 1,452 0 0 1976 11–19 36.7% — 1,709 0 3
20 1975 5–7 41.7% — 1,492 0 0 1977 8–15 34.8% — 1,678 0 3
21 1976 4–8 33.3% — 1,530 0 0 1978 13–24 35.1% — 1,659 0 3
22 1977 8–12 40.0% — 1,566 0 0 1979 18–19 48.6% — 1,694 0 5
23 1978 6–7 46.2% — 1,594 0 0 1980 22–27 44.9% — 1,753 0 5
24 1979 8–9 47.1% — 1,594 0 0 1981 20–21 48.8% — 1,806 0 6
25 1980 11–10 52.4% — 1,592 0 0 1982 12–17 41.4% — 1,705 0 6
26 1981 1–6 14.3% — 1,531 0 0 1983 18–22 45.0% — 1,692 0 6
27 1982 0–1 0.0% — 1,520 0 0 1984 11–18 37.9% #77 1,630 0 6
28 1983 0–4 0.0% — 1,467 0 0 1985 14–12 53.8% #81 1,713 0 6
29 1984 0–1 0.0% — 1,458 0 0 1986 18–17 51.4% #46 1,699 0 6
30 — — — — — — — 1987 13–15 46.4% #61 1,645 0 6
31 — — — — — — — 1988 11–19 36.7% #109 1,585 0 6
32 1987 0–1 0.0% — 1,451 0 0 1989 18–15 54.5% #45 1,662 0 6
33 — — — — — — — 1990 8–12 40.0% #96 1,639 0 6
34 — — — — — — — 1991 0–2 0.0% #337 1,607 0 6
35 — — — — — — — 1992 1–5 16.7% #418 1,561 0 6
36 — — — — — — — 1993 0–4 0.0% #394 1,510 0 6
37 — — — — — — — 1994 0–1 0.0% #692 1,509 0 6

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 Naoko Sato Betsy Nagelsen
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 %
15 — — — — — — — — — — — — — — — — — 1972 — — — — 2 1 3 66.7% 0 1 1 0.0% — — — —
16 — — — — — — — — — — — — — — — — — 1973 1 1 2 50.0% 0 2 2 0.0% — — — — — — — —
17 1972 0 1 1 0.0% 0 1 1 0.0% — — — — 2 1 3 66.7% 1974 3 2 5 60.0% 6 6 12 50.0% 13 6 19 68.4% 0 4 4 0.0%
18 1973 — — — — 2 4 6 33.3% 2 2 4 50.0% — — — — 1975 5 5 10 50.0% 6 5 11 54.5% 2 3 5 40.0% 0 1 1 0.0%
19 1974 2 2 4 50.0% 1 6 7 14.3% 2 4 6 33.3% 0 1 1 0.0% 1976 0 2 2 0.0% 5 11 16 31.3% 3 3 6 50.0% 3 3 6 50.0%
20 1975 — — — — 3 2 5 60.0% 0 2 2 0.0% 0 1 1 0.0% 1977 3 3 6 50.0% 1 4 5 20.0% 3 5 8 37.5% 1 3 4 25.0%
21 1976 — — — — 0 4 4 0.0% 4 4 8 50.0% — — — — 1978 3 7 10 30.0% 4 6 10 40.0% 5 5 10 50.0% 1 6 7 14.3%
22 1977 0 1 1 0.0% 1 2 3 33.3% 7 9 16 43.8% — — — — 1979 4 7 11 36.4% 0 2 2 0.0% 4 4 8 50.0% 2 6 8 25.0%
23 1978 — — — — 1 2 3 33.3% 5 4 9 55.6% 0 1 1 0.0% 1980 7 7 14 50.0% 0 2 2 0.0% 10 7 17 58.8% 5 11 16 31.3%
24 1979 0 2 2 0.0% — — — — 4 5 9 44.4% — — — — 1981 5 6 11 45.5% 1 4 5 20.0% 11 4 15 73.3% 3 7 10 30.0%
25 1980 1 1 2 50.0% 4 4 8 50.0% 3 4 7 42.9% — — — — 1982 2 4 6 33.3% 2 3 5 40.0% 3 3 6 50.0% 5 7 12 41.7%
26 1981 0 3 3 0.0% 1 2 3 33.3% 0 1 1 0.0% — — — — 1983 2 7 9 22.2% 2 5 7 28.6% 4 5 9 44.4% 7 4 11 63.6%
27 1982 — — — — — — — — 0 1 1 0.0% — — — — 1984 9 7 16 56.3% 0 4 4 0.0% 2 7 9 22.2% — — — —
28 1983 0 1 1 0.0% — — — — 0 2 2 0.0% — — — — 1985 6 5 11 54.5% 0 1 1 0.0% 7 5 12 58.3% 1 1 2 50.0%
29 1984 — — — — — — — — 0 1 1 0.0% — — — — 1986 6 10 16 37.5% 0 1 1 0.0% 7 3 10 70.0% 5 3 8 62.5%
30 — — — — — — — — — — — — — — — — — 1987 8 6 14 57.1% — — — — 5 5 10 50.0% 0 4 4 0.0%
31 — — — — — — — — — — — — — — — — — 1988 5 13 18 27.8% — — — — 4 5 9 44.4% 2 1 3 66.7%
32 1987 — — — — — — — — 0 1 1 0.0% — — — — 1989 12 10 22 54.5% — — — — 6 3 9 66.7% 0 2 2 0.0%
33 — — — — — — — — — — — — — — — — — 1990 3 7 10 30.0% 0 2 2 0.0% 5 3 8 62.5% — — — —
34 — — — — — — — — — — — — — — — — — 1991 — — — — — — — — 0 2 2 0.0% — — — —
35 — — — — — — — — — — — — — — — — — 1992 0 2 2 0.0% — — — — 1 1 2 50.0% 0 2 2 0.0%
36 — — — — — — — — — — — — — — — — — 1993 0 2 2 0.0% — — — — — — — — 0 2 2 0.0%
37 — — — — — — — — — — — — — — — — — 1994 0 1 1 0.0% — — — — — — — — — — — —
Career — 3 11 14 21.4% 13 27 40 32.5% 27 40 67 40.3% 2 4 6 33.3% — 84 114 198 42.4% 29 59 88 33.0% 95 80 175 54.3% 35 67 102 34.3%

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 Naoko Sato Betsy Nagelsen
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
15 — — — — — — — — — — — — — — — — 1972 1511 98.7 — — — — — +28 — 53.8% +0.23 2–1 (67%) 1–1 — +0.77
16 — — — — — — — — — — — — — — — — 1973 1495 98.7 — — — — — — — 40.0% -1.00 0–2 1–0 — +0.55
17 1972 1505 88.1 — — — — +47 — — 36.4% -2.00 1–0 1–0 — +0.31 1974 1725 133.0 — — — — -176 -202 +77 57.7% +0.46 8–6 (57%) 5–6 (45%) 103.4 +0.58
18 1973 1496 92.8 — — — — — -8 +52 40.9% -1.41 1–1 — — +1.13 1975 1791 125.1 — — — — -124 -166 -38 45.7% -0.44 4–4 (50%) 3–3 (50%) 101.5 -3.05
19 1974 1453 91.0 — — — — +95 -59 +77 34.0% -1.11 3–4 (43%) 1–3 (25%) 97.2 +1.33 1976 1709 124.2 — — — — -65 -116 +70 41.4% -0.76 3–7 (30%) 1–1 — -1.73
20 1975 1493 95.6 — — — — — -27 — 40.7% -1.33 2–1 (67%) 1–1 — +0.98 1977 1678 123.8 — — — — -30 -105 +46 37.9% -0.62 6–6 (50%) 1–2 (33%) — +0.05
21 1976 1530 116.3 — — — — — -82 +48 28.0% -1.64 2–1 (67%) — — -0.39 1978 1659 129.6 — — — — -99 -85 +99 40.7% -0.58 4–10 (29%) 3–7 (30%) 92.4 -0.84
22 1977 1567 121.7 — — — — — -112 +16 43.8% -0.69 3–5 (38%) 3–1 (75%) 101.1 +1.63 1979 1695 122.8 — — — — -132 — +12 48.9% +0.08 8–8 (50%) 1–3 (25%) 98.5 +1.65
23 1978 1595 111.7 — — — — — -138 +17 48.3% -0.17 1–2 (33%) 1–1 — +0.54 1980 1753 130.7 — — — — -148 — +40 47.9% -0.41 7–12 (37%) 6–2 (75%) 102.2 -1.78
24 1979 1594 114.4 — — — — — — +13 47.4% +0.05 2–2 (50%) 1–1 — +1.58 1981 1806 134.9 — — — — -129 -305 +99 49.5% -0.18 8–7 (53%) 5–5 (50%) 103.7 -3.53
25 1980 1593 108.7 — — — — — -117 -11 53.2% +0.30 2–3 (40%) 1–1 — +1.74 1982 1705 123.2 — — — — -99 -214 +170 47.3% -0.34 5–11 (31%) 9–3 (75%) 100.0 -0.40
26 1981 1531 97.3 — — — — -43 -32 — 23.5% -1.88 1–2 (33%) 1–1 — +0.51 1983 1693 126.7 — — — — -32 -138 +114 46.3% -0.46 7–8 (47%) 7–6 (54%) 102.2 +0.98
27 1982 1520 99.4 — — — — — — — 0.0% -2.00 — — — +0.01 1984 1631 126.4 — — — — +59 -141 +117 41.4% -0.51 5–7 (42%) 7–3 (70%) 99.2 +0.69
28 1983 1467 93.8 — — — — — — — 11.1% -1.89 0–1 — — +0.48 1985 1714 129.5 — — — — -26 — +87 54.2% +0.36 7–4 (64%) 1–2 (33%) — +1.17
29 1984 1459 102.4 — — — — — — — 0.0% -1.50 — 0–1 — -0.02 1986 1699 131.1 — — — — -55 — +171 51.8% +0.01 6–7 (46%) 4–3 (57%) 98.8 +1.66
30 — — — — — — — — — — — — — — — — 1987 1646 121.6 — — — — -24 — +148 46.2% 0.00 5–6 (45%) 4–5 (44%) 97.1 +1.69
31 — — — — — — — — — — — — — — — — 1988 1586 116.1 — — — — -27 — +128 42.5% -0.27 4–9 (31%) 5–8 (38%) 93.3 +1.55
32 1987 1451 91.3 — — — — — — — 0.0% -5.50 — — — -0.06 1989 1662 126.0 — — — — -56 — +96 50.6% +0.04 11–6 (65%) 3–4 (43%) 105.8 +1.48
33 — — — — — — — — — — — — — — — — 1990 1640 115.0 — — — — -81 — +173 40.0% -0.60 3–2 (60%) 2–4 (33%) 100.0 +0.09
34 — — — — — — — — — — — — — — — — 1991 1608 97.2 — — — — — — — 20.0% -2.40 0–1 — — -0.01
35 — — — — — — — — — — — — — — — — 1992 1561 105.4 — — — — -52 — — 26.7% -1.67 1–2 (33%) 1–0 — +0.03
36 — — — — — — — — — — — — — — — — 1993 1511 98.5 — — — — -47 — — 20.0% -2.70 0–2 0–1 — +0.17
37 — — — — — — — — — — — — — — — — 1994 1509 102.5 — — — — — — — 0.0% -5.50 — — — -0.16
Career — 1629 106.1 — — — — +45 -69 +25 39.8% -0.84 18–22 (45%) 10–10 (50%) 101.4 +6.65 — 1891 131.9 — — — — -73 -148 +94 46.5% -0.28 104–128 (45%) 70–69 (50%) 101.1 +0.27

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.