H2H data updated: 2026-10-28 00:00 UTC

Patricia Bostrom vs Ilana Kloss H2H: 0-1

Ilana Kloss holds a 1–0 lead over Patricia Bostrom in their WTA head-to-head. Across 1 main-draw meeting, Ilana Kloss leads 1–0 on hard courts. Most recently, Ilana Kloss won the 1973 Bloemfontein semifinal 6-1 6-3.

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

Patricia Bostrom
USA Age 74
H2H
0 – 1
1 main-draw meetings
Ilana Kloss
RSA Age 70 Left-Handed 164 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Ilana Kloss 6-1 6-3 Patricia Bostrom Match data Dec 13, 1973* SF Bloemfontein WTA 250 Hard

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
Patricia Bostrom — — — 1,674 60 89 40.3% 0 0 0 0 1 1
Ilana Kloss — — — 1,890 135 145 48.2% 0 0 0 0 8 8

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 Patricia Bostrom Ilana Kloss
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
14 — — — — — — — 1970 0–1 0.0% — 1,491 0 0
15 — — — — — — — 1971 5–4 55.6% — 1,561 0 1
16 — — — — — — — 1972 13–12 52.0% — 1,592 0 3
17 1969 1–1 50.0% — 1,502 0 0 1973 38–18 67.9% — 1,872 0 8
18 1970 1–4 20.0% — 1,483 0 0 1974 19–16 54.3% — 1,801 0 8
19 1971 0–4 0.0% — 1,451 0 0 1975 9–20 31.0% — 1,688 0 8
20 1972 7–7 50.0% — 1,499 0 1 1976 18–15 54.5% — 1,785 0 8
21 1973 16–23 41.0% — 1,587 0 1 1977 4–13 23.5% — 1,668 0 8
22 1974 12–10 54.5% — 1,654 0 1 1978 14–11 56.0% — 1,741 0 8
23 1975 5–6 45.5% — 1,625 0 1 1979 15–26 36.6% — 1,699 0 8
24 1976 4–7 36.4% — 1,624 0 1 1980 0–8 0.0% — 1,605 0 8
25 1977 8–9 47.1% — 1,619 0 1 — — — — — — —
26 1978 6–17 26.1% — 1,530 0 1 1982 0–1 0.0% — 1,586 0 8
27 1979 0–1 0.0% — 1,517 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 Patricia Bostrom Ilana Kloss
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 — — — — — — — — — — — — — — — — — 1970 0 1 1 0.0% — — — — — — — — — — — —
15 — — — — — — — — — — — — — — — — — 1971 5 4 9 55.6% — — — — — — — — — — — —
16 — — — — — — — — — — — — — — — — — 1972 8 7 15 53.3% 0 1 1 0.0% 3 4 7 42.9% — — — —
17 — — — — — — — — — — — — — — — — — 1973 15 6 21 71.4% 14 7 21 66.7% 9 5 14 64.3% — — — —
18 1970 — — — — 1 2 3 33.3% 0 2 2 0.0% — — — — 1974 8 5 13 61.5% 3 4 7 42.9% 2 3 5 40.0% 2 2 4 50.0%
19 1971 0 1 1 0.0% 0 2 2 0.0% 0 1 1 0.0% — — — — 1975 1 9 10 10.0% 1 2 3 33.3% 1 2 3 33.3% 2 6 8 25.0%
20 1972 5 2 7 71.4% 0 3 3 0.0% 1 2 3 33.3% — — — — 1976 3 2 5 60.0% 9 8 17 52.9% 5 4 9 55.6% 1 1 2 50.0%
21 1973 4 6 10 40.0% 5 10 15 33.3% 7 7 14 50.0% — — — — 1977 1 1 2 50.0% 1 6 7 14.3% 2 2 4 50.0% 0 4 4 0.0%
22 1974 8 4 12 66.7% 0 1 1 0.0% 1 2 3 33.3% 3 3 6 50.0% 1978 4 4 8 50.0% — — — — 9 4 13 69.2% 1 3 4 25.0%
23 1975 1 1 2 50.0% 0 1 1 0.0% — — — — 2 1 3 66.7% 1979 2 7 9 22.2% 1 4 5 20.0% 4 5 9 44.4% 8 10 18 44.4%
24 1976 2 1 3 66.7% 0 2 2 0.0% 1 3 4 25.0% 1 1 2 50.0% 1980 0 1 1 0.0% 0 2 2 0.0% 0 2 2 0.0% 0 3 3 0.0%
25 1977 2 1 3 66.7% 1 1 2 50.0% 2 5 7 28.6% 3 2 5 60.0% — — — — — — — — — — — — — — — — —
26 1978 3 5 8 37.5% 1 4 5 20.0% 2 5 7 28.6% 0 3 3 0.0% 1982 — — — — — — — — 0 1 1 0.0% — — — —
27 1979 — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
Career — 25 21 46 54.3% 8 26 34 23.5% 14 28 42 33.3% 9 10 19 47.4% — 47 47 94 50.0% 29 34 63 46.0% 35 32 67 52.2% 14 29 43 32.6%

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 Patricia Bostrom Ilana Kloss
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 — — — — — — — — — — — — — — — — 1970 1491 97.3 — — — — — — — 0.0% -4.50 — — — +0.01
15 — — — — — — — — — — — — — — — — 1971 1562 111.3 — — — — +63 — — 57.9% +0.26 0–1 0–1 — +1.35
16 — — — — — — — — — — — — — — — — 1972 1593 123.4 — — — — +46 — -33 54.5% +0.64 1–4 (20%) 0–2 — +3.97
17 1969 1503 100.5 — — — — — — — 40.0% -0.60 1–0 — — +0.10 1973 1872 144.6 — — — — -17 -132 -190 66.4% +1.36 7–9 (44%) 2–1 (67%) 101.0 +4.65
18 1970 1484 99.6 — — — — — +32 — 20.0% -2.60 — — — -0.16 1974 1802 136.3 — — — — +25 -83 -116 52.2% +0.16 1–4 (20%) 2–1 (67%) 97.5 -2.24
19 1971 1452 99.7 — — — — — — — 11.1% -3.00 0–1 — — -0.15 1975 1688 127.3 — — — — -12 -4 -4 36.4% -0.99 2–8 (20%) 3–5 (38%) 91.8 -1.35
20 1972 1500 99.4 — — — — +123 -57 -9 46.9% -0.56 3–1 (75%) 2–1 (67%) — +2.43 1976 1785 138.9 — — — — -89 -30 -55 50.6% +0.13 8–3 (73%) 3–2 (60%) 108.5 -2.55
21 1973 1588 114.9 — — — — +7 -115 -22 39.3% -0.73 5–3 (63%) 0–3 (0%) 101.2 +0.80 1977 1668 111.1 — — — — -42 +3 +35 28.2% -1.69 2–3 (40%) 2–1 (67%) 99.1 -0.31
22 1974 1655 122.8 — — — — +30 — -96 51.1% +0.15 3–0 (100%) — — +1.82 1978 1741 124.4 — — — — -84 — +34 55.9% +0.24 4–5 (44%) 5–6 (45%) 100.4 +1.14
23 1975 1626 110.1 — — — — +103 — — 42.3% -0.15 3–1 (75%) 1–2 (33%) 101.9 +1.54 1979 1700 127.2 — — — — -31 -53 +29 36.8% -1.15 10–5 (67%) 7–2 (78%) 110.6 -0.20
24 1976 1624 114.5 — — — — +86 — -44 28.6% -1.43 1–0 0–1 — -0.66 1980 1605 102.3 — — — — -47 — — 5.9% -3.18 0–1 0–2 — -0.55
25 1977 1619 116.5 — — — — +106 — -81 51.4% +0.20 1–2 (33%) 2–3 (40%) 98.5 +2.89 — — — — — — — — — — — — — — — —
26 1978 1531 104.1 — — — — +117 -91 -27 27.7% -1.92 2–1 (67%) 1–1 — +1.34 1982 1586 97.0 — — — — — — — 33.3% -2.67 0–1 — — +0.16
27 1979 1518 95.7 — — — — — — — 0.0% -4.50 — — — +0.08 — — — — — — — — — — — — — — — —
Career — 1675 114.8 — — — — +71 -87 -41 39.3% -0.80 19–9 (68%) 6–11 (35%) 104.2 +6.82 — 1890 136.2 — — — — -13 -69 -49 48.6% -0.10 35–44 (44%) 24–23 (51%) 101.2 +1.47

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.