Kazuko Sawamatsu
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Evonne Goolagong | 0 | 9 | 9 | Sep 6, 1975 | H2H |
| Olga Morozova | 2 | 6 | 8 | Dec 7, 1974 | H2H |
| Julie Heldman | 2 | 4 | 6 | Sep 2, 1975 | H2H |
| Kerry Reid | 0 | 6 | 6 | Dec 21, 1974 | H2H |
| Helen Gourlay | 1 | 4 | 5 | Oct 21, 1974 | H2H |
H2H data updated: 2026-09-13 00:00 UTC
Kazuko Sawamatsu vs Patricia Bostrom H2H: 3-0
Kazuko Sawamatsu holds a 3–0 lead over Patricia Bostrom in their WTA head-to-head. Across 3 main-draw meetings, Kazuko Sawamatsu leads 2–0 on grass and 1–0 on hard courts. Most recently, Kazuko Sawamatsu won the 1974 Wimbledon round of 128 6-2 6-2.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Kazuko Sawamatsu | 6-2 6-2 | Patricia Bostrom | Match data | Jun 26, 1974* | R128 | Wimbledon | Grand Slam | Grass |
| Kazuko Sawamatsu | 6-1 6-2 | Patricia Bostrom | Match data | Apr 6, 1974* | SF | Costa Mesa | WTA 250 | Hard |
| Kazuko Sawamatsu | 6-2-7-5 | Patricia Bostrom | Match data | Jan 14, 1973* | QF | ASB Classic | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kazuko Sawamatsu | — | — | — | 1,954 | 179 | 100 | 64.2% | 0 | 0 | 0 | 1 | 8 | 9 |
| Patricia Bostrom | — | — | — | 1,674 | 57 | 88 | 39.3% | 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 | Kazuko Sawamatsu | Patricia Bostrom | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | 1968 | 9–7 | 56.2% | — | 1,556 | 0 | 0 | 1969 | 1–1 | 50.0% | — | 1,502 | 0 | 0 |
| 18 | 1969 | 16–8 | 66.7% | — | 1,674 | 0 | 1 | 1970 | 1–4 | 20.0% | — | 1,483 | 0 | 0 |
| 19 | 1970 | 10–8 | 55.6% | — | 1,727 | 0 | 2 | 1971 | 0–4 | 0.0% | — | 1,451 | 0 | 0 |
| 20 | 1971 | 18–10 | 64.3% | — | 1,826 | 0 | 3 | 1972 | 7–7 | 50.0% | — | 1,499 | 0 | 1 |
| 21 | 1972 | 28–16 | 63.6% | — | 1,848 | 0 | 6 | 1973 | 16–23 | 41.0% | — | 1,587 | 0 | 1 |
| 22 | 1973 | 38–21 | 64.4% | — | 1,825 | 0 | 6 | 1974 | 12–10 | 54.5% | — | 1,654 | 0 | 1 |
| 23 | 1974 | 37–20 | 64.9% | — | 1,900 | 0 | 8 | 1975 | 5–6 | 45.5% | — | 1,625 | 0 | 1 |
| 24 | 1975 | 23–10 | 69.7% | — | 1,954 | 0 | 9 | 1976 | 4–7 | 36.4% | — | 1,624 | 0 | 1 |
| 25 | — | — | — | — | — | — | — | 1977 | 8–9 | 47.1% | — | 1,618 | 0 | 1 |
| 26 | — | — | — | — | — | — | — | 1978 | 3–16 | 15.8% | — | 1,516 | 0 | 1 |
| 27 | — | — | — | — | — | — | — | 1979 | 0–1 | 0.0% | — | 1,504 | 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 | Kazuko Sawamatsu | Patricia Bostrom | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| 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 % | |||
| 17 | 1968 | — | — | — | — | 9 | 5 | 14 | 64.3% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 1969 | — | — | — | — | 13 | 6 | 19 | 68.4% | 3 | 2 | 5 | 60.0% | — | — | — | — | 1970 | — | — | — | — | 1 | 2 | 3 | 33.3% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 19 | 1970 | — | — | — | — | 3 | 4 | 7 | 42.9% | 4 | 4 | 8 | 50.0% | — | — | — | — | 1971 | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 20 | 1971 | — | — | — | — | 4 | 4 | 8 | 50.0% | 14 | 6 | 20 | 70.0% | — | — | — | — | 1972 | 5 | 2 | 7 | 71.4% | 0 | 3 | 3 | 0.0% | 1 | 2 | 3 | 33.3% | — | — | — | — |
| 21 | 1972 | 1 | 1 | 2 | 50.0% | 11 | 7 | 18 | 61.1% | 13 | 8 | 21 | 61.9% | 3 | 0 | 3 | 100.0% | 1973 | 4 | 6 | 10 | 40.0% | 5 | 10 | 15 | 33.3% | 7 | 7 | 14 | 50.0% | — | — | — | — |
| 22 | 1973 | 3 | 1 | 4 | 75.0% | 18 | 8 | 26 | 69.2% | 16 | 9 | 25 | 64.0% | 1 | 3 | 4 | 25.0% | 1974 | 8 | 4 | 12 | 66.7% | 0 | 1 | 1 | 0.0% | 1 | 2 | 3 | 33.3% | 3 | 3 | 6 | 50.0% |
| 23 | 1974 | 6 | 1 | 7 | 85.7% | 11 | 9 | 20 | 55.0% | 17 | 9 | 26 | 65.4% | 3 | 1 | 4 | 75.0% | 1975 | 1 | 1 | 2 | 50.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | 2 | 1 | 3 | 66.7% |
| 24 | 1975 | — | — | — | — | 19 | 7 | 26 | 73.1% | 4 | 3 | 7 | 57.1% | — | — | — | — | 1976 | 2 | 1 | 3 | 66.7% | 0 | 2 | 2 | 0.0% | 1 | 3 | 4 | 25.0% | 1 | 1 | 2 | 50.0% |
| 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1977 | 2 | 1 | 3 | 66.7% | 1 | 1 | 2 | 50.0% | 2 | 5 | 7 | 28.6% | 3 | 2 | 5 | 60.0% |
| 26 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1978 | 0 | 4 | 4 | 0.0% | 1 | 4 | 5 | 20.0% | 2 | 5 | 7 | 28.6% | 0 | 3 | 3 | 0.0% |
| 27 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1979 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| Career | — | 10 | 3 | 13 | 76.9% | 88 | 50 | 138 | 63.8% | 71 | 43 | 114 | 62.3% | 7 | 4 | 11 | 63.6% | — | 22 | 20 | 42 | 52.4% | 8 | 26 | 34 | 23.5% | 14 | 28 | 42 | 33.3% | 9 | 10 | 19 | 47.4% |
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 | Kazuko Sawamatsu | Patricia Bostrom | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 17 | 1968 | 1556 | 119.1 | — | — | — | — | — | +59 | — | 56.3% | +0.87 | 2–0 | — | — | +0.07 | 1969 | 1503 | 100.5 | — | — | — | — | — | — | — | 40.0% | -0.60 | 1–0 | — | — | +0.10 |
| 18 | 1969 | 1674 | 127.4 | — | — | — | — | — | +49 | -122 | 64.7% | +1.25 | 2–1 (67%) | — | — | +0.72 | 1970 | 1484 | 99.6 | — | — | — | — | — | +32 | — | 20.0% | -2.60 | — | — | — | -0.16 |
| 19 | 1970 | 1727 | 133.7 | — | — | — | — | — | -29 | -107 | 59.1% | +0.75 | 2–6 (25%) | — | — | -1.68 | 1971 | 1452 | 99.7 | — | — | — | — | — | — | — | 11.1% | -3.00 | 0–1 | — | — | -0.15 |
| 20 | 1971 | 1827 | 139.8 | — | — | — | — | — | -118 | 0 | 59.3% | +0.81 | 6–1 (86%) | 1–0 | — | -2.27 | 1972 | 1500 | 99.4 | — | — | — | — | +123 | -57 | -9 | 46.9% | -0.56 | 3–1 (75%) | 2–1 (67%) | — | +2.43 |
| 21 | 1972 | 1848 | 149.8 | — | — | — | — | -200 | -59 | +3 | 61.1% | +1.22 | 5–4 (56%) | — | — | -3.87 | 1973 | 1588 | 114.9 | — | — | — | — | +7 | -115 | -22 | 39.3% | -0.73 | 5–3 (63%) | 0–3 (0%) | 101.2 | +0.87 |
| 22 | 1973 | 1826 | 145.5 | — | — | — | — | -160 | +61 | +45 | 60.9% | +0.99 | 10–5 (67%) | 3–4 (43%) | 104.0 | +1.60 | 1974 | 1655 | 122.8 | — | — | — | — | +30 | — | -96 | 51.1% | +0.15 | 3–0 (100%) | — | — | +1.81 |
| 23 | 1974 | 1900 | 150.9 | — | — | — | — | -79 | -49 | +35 | 61.7% | +0.94 | 8–2 (80%) | 4–3 (57%) | 106.4 | -3.51 | 1975 | 1626 | 110.1 | — | — | — | — | +103 | — | — | 42.3% | -0.15 | 3–1 (75%) | 1–2 (33%) | 101.9 | +1.58 |
| 24 | 1975 | 1955 | 150.1 | — | — | — | — | — | +26 | -50 | 64.9% | +1.09 | 6–2 (75%) | 3–1 (75%) | 106.5 | -0.94 | 1976 | 1624 | 114.2 | — | — | — | — | +86 | — | -46 | 28.6% | -1.43 | 1–0 | 0–1 | — | -0.62 |
| 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1977 | 1619 | 116.5 | — | — | — | — | +106 | — | -82 | 51.4% | +0.20 | 1–2 (33%) | 2–3 (40%) | 98.5 | +2.87 |
| 26 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1978 | 1517 | 103.1 | — | — | — | — | +118 | -78 | -14 | 17.9% | -2.54 | 0–1 | — | — | +0.45 |
| 27 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1979 | 1504 | 95.7 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | — | +0.08 |
| Career | — | 1955 | 150.4 | — | — | — | — | -131 | +6 | +3 | 61.3% | +1.01 | 41–21 (66%) | 11–8 (58%) | 110.7 | -3.61 | — | 1675 | 114.8 | — | — | — | — | +68 | -84 | -39 | 38.4% | -0.85 | 17–9 (65%) | 5–10 (33%) | 103.0 | +6.48 |
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.
Patricia Bostrom
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Chris Evert | 0 | 5 | 5 | Oct 12, 1978 | H2H |
| Dianne Fromholtz | 0 | 5 | 5 | Jan 9, 1977 | H2H |
| Marilyn Pryde | 2 | 2 | 4 | Jul 29, 1973 | H2H |
| Janice Metcalf | 0 | 3 | 3 | Aug 27, 1976 | H2H |
| Nathalie Fuchs | 0 | 3 | 3 | Mar 6, 1975 | H2H |