H2H data updated: 2026-09-13 00:00 UTC
Kazuko Sawamatsu holds a 1–0 lead over Vicki Lancaster Kerr in their WTA head-to-head. Across 1 main-draw meeting, Kazuko Sawamatsu leads 1–0 on grass. Most recently, Kazuko Sawamatsu won the 1971 Wimbledon round of 128 6-0 6-3.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Kazuko Sawamatsu | 6-0 6-3 | Vicki Lancaster Kerr | Match data | Jun 23, 1971* | R128 | Wimbledon | Grand Slam | 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vicki Lancaster Kerr | — | — | — | 1,642 | 39 | 49 | 44.3% | 0 | 0 | 0 | 0 | 3 | 3 |
| Kazuko Sawamatsu | — | — | — | 1,954 | 179 | 100 | 64.2% | 0 | 0 | 0 | 1 | 8 | 9 |
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 | Vicki Lancaster Kerr | Kazuko Sawamatsu | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | 1968 | 1–5 | 16.7% | — | 1,455 | 0 | 0 | 1968 | 9–7 | 56.2% | — | 1,556 | 0 | 0 |
| 18 | 1969 | 2–3 | 40.0% | — | 1,477 | 0 | 0 | 1969 | 16–8 | 66.7% | — | 1,674 | 0 | 1 |
| 19 | 1970 | 1–4 | 20.0% | — | 1,466 | 0 | 0 | 1970 | 10–8 | 55.6% | — | 1,727 | 0 | 2 |
| 20 | 1971 | 11–13 | 45.8% | — | 1,516 | 0 | 0 | 1971 | 18–10 | 64.3% | — | 1,826 | 0 | 3 |
| 21 | 1972 | 12–9 | 57.1% | — | 1,581 | 0 | 2 | 1972 | 28–16 | 63.6% | — | 1,848 | 0 | 6 |
| 22 | 1973 | 2–1 | 66.7% | — | 1,602 | 0 | 2 | 1973 | 38–21 | 64.4% | — | 1,825 | 0 | 6 |
| 23 | 1974 | 3–4 | 42.9% | — | 1,613 | 0 | 3 | 1974 | 37–20 | 64.9% | — | 1,900 | 0 | 8 |
| 24 | 1975 | 1–2 | 33.3% | — | 1,607 | 0 | 3 | 1975 | 23–10 | 69.7% | — | 1,954 | 0 | 9 |
| 25 | 1976 | 3–6 | 33.3% | — | 1,569 | 0 | 3 | — | — | — | — | — | — | — |
| 26 | 1977 | 0–1 | 0.0% | — | 1,554 | 0 | 3 | — | — | — | — | — | — | — |
| 29 | 1980 | 3–1 | 75.0% | — | 1,582 | 0 | 3 | — | — | — | — | — | — | — |
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 | Vicki Lancaster Kerr | Kazuko Sawamatsu | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — | — | — | — | 1 | 5 | 6 | 16.7% | — | — | — | — | 1968 | — | — | — | — | 9 | 5 | 14 | 64.3% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 18 | 1969 | — | — | — | — | 0 | 1 | 1 | 0.0% | 2 | 2 | 4 | 50.0% | — | — | — | — | 1969 | — | — | — | — | 13 | 6 | 19 | 68.4% | 3 | 2 | 5 | 60.0% | — | — | — | — |
| 19 | 1970 | — | — | — | — | — | — | — | — | 1 | 4 | 5 | 20.0% | — | — | — | — | 1970 | — | — | — | — | 3 | 4 | 7 | 42.9% | 4 | 4 | 8 | 50.0% | — | — | — | — |
| 20 | 1971 | — | — | — | — | 6 | 4 | 10 | 60.0% | 2 | 7 | 9 | 22.2% | — | — | — | — | 1971 | — | — | — | — | 4 | 4 | 8 | 50.0% | 14 | 6 | 20 | 70.0% | — | — | — | — |
| 21 | 1972 | — | — | — | — | 10 | 5 | 15 | 66.7% | 2 | 4 | 6 | 33.3% | — | — | — | — | 1972 | 1 | 1 | 2 | 50.0% | 11 | 7 | 18 | 61.1% | 13 | 8 | 21 | 61.9% | 3 | 0 | 3 | 100.0% |
| 22 | 1973 | — | — | — | — | — | — | — | — | 2 | 1 | 3 | 66.7% | — | — | — | — | 1973 | 3 | 1 | 4 | 75.0% | 18 | 8 | 26 | 69.2% | 16 | 9 | 25 | 64.0% | 1 | 3 | 4 | 25.0% |
| 23 | 1974 | — | — | — | — | 1 | 0 | 1 | 100.0% | 2 | 4 | 6 | 33.3% | — | — | — | — | 1974 | 6 | 1 | 7 | 85.7% | 11 | 9 | 20 | 55.0% | 17 | 9 | 26 | 65.4% | 3 | 1 | 4 | 75.0% |
| 24 | 1975 | — | — | — | — | — | — | — | — | 1 | 2 | 3 | 33.3% | — | — | — | — | 1975 | — | — | — | — | 19 | 7 | 26 | 73.1% | 4 | 3 | 7 | 57.1% | — | — | — | — |
| 25 | 1976 | 0 | 1 | 1 | 0.0% | 2 | 3 | 5 | 40.0% | 0 | 1 | 1 | 0.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 1977 | — | — | — | — | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1980 | — | — | — | — | — | — | — | — | 3 | 1 | 4 | 75.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 0 | 1 | 1 | 0.0% | 19 | 13 | 32 | 59.4% | 16 | 31 | 47 | 34.0% | 1 | 2 | 3 | 33.3% | — | 10 | 3 | 13 | 76.9% | 88 | 50 | 138 | 63.8% | 71 | 43 | 114 | 62.3% | 7 | 4 | 11 | 63.6% |
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 | Vicki Lancaster Kerr | Kazuko Sawamatsu | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1455 | 94.0 | — | — | — | — | — | — | -8 | 18.2% | -1.82 | 1–0 | — | — | +0.12 | 1968 | 1556 | 119.1 | — | — | — | — | — | +59 | — | 56.3% | +0.87 | 2–0 | — | — | +0.07 |
| 18 | 1969 | 1478 | 102.6 | — | — | — | — | — | — | +24 | 36.4% | -1.55 | 1–0 | — | — | +0.04 | 1969 | 1674 | 127.4 | — | — | — | — | — | +49 | -122 | 64.7% | +1.25 | 2–1 (67%) | — | — | +0.72 |
| 19 | 1970 | 1467 | 105.4 | — | — | — | — | — | — | +13 | 20.0% | -2.00 | — | — | — | +0.08 | 1970 | 1727 | 133.7 | — | — | — | — | — | -29 | -107 | 59.1% | +0.75 | 2–6 (25%) | — | — | -1.68 |
| 20 | 1971 | 1517 | 103.6 | — | — | — | — | — | +20 | -53 | 46.2% | -0.50 | 4–2 (67%) | — | — | +1.19 | 1971 | 1827 | 139.8 | — | — | — | — | — | -118 | 0 | 59.3% | +0.81 | 6–1 (86%) | 1–0 | — | -2.27 |
| 21 | 1972 | 1582 | 115.5 | — | — | — | — | — | +56 | -127 | 53.3% | +0.11 | 3–2 (60%) | — | — | +1.14 | 1972 | 1848 | 149.8 | — | — | — | — | -200 | -59 | +3 | 61.1% | +1.22 | 5–4 (56%) | — | — | -3.87 |
| 22 | 1973 | 1602 | 106.0 | — | — | — | — | — | — | -106 | 57.1% | +0.71 | 1–0 | 0–2 | — | +0.26 | 1973 | 1826 | 145.5 | — | — | — | — | -160 | +61 | +45 | 60.9% | +0.99 | 10–5 (67%) | 3–4 (43%) | 104.0 | +1.60 |
| 23 | 1974 | 1614 | 113.9 | — | — | — | — | — | — | -105 | 44.4% | -0.11 | 2–2 (50%) | 1–1 | — | -0.35 | 1974 | 1900 | 150.9 | — | — | — | — | -79 | -49 | +35 | 61.7% | +0.94 | 8–2 (80%) | 4–3 (57%) | 106.4 | -3.51 |
| 24 | 1975 | 1607 | 105.7 | — | — | — | — | — | — | -96 | 37.5% | -0.37 | 1–1 | — | — | +0.22 | 1975 | 1955 | 150.1 | — | — | — | — | — | +26 | -50 | 64.9% | +1.09 | 6–2 (75%) | 3–1 (75%) | 106.5 | -0.94 |
| 25 | 1976 | 1570 | 101.3 | — | — | — | — | +7 | +73 | — | 33.3% | -1.17 | — | 1–0 | — | +0.70 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 1977 | 1554 | 95.5 | — | — | — | — | — | — | — | 0.0% | -4.00 | — | — | — | +0.27 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1980 | 1583 | 100.7 | — | — | — | — | — | — | -30 | 60.0% | -0.20 | 2–0 | 1–0 | — | +0.69 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1643 | 109.4 | — | — | — | — | +7 | +47 | -54 | 43.2% | -0.57 | 15–7 (68%) | 3–3 (50%) | 109.2 | +5.07 | — | 1955 | 150.4 | — | — | — | — | -131 | +6 | +3 | 61.3% | +1.01 | 41–21 (66%) | 11–8 (58%) | 110.7 | -3.61 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Karen Krantzcke | 0 | 4 | 4 | Dec 26, 1973 | H2H |
| Sue Barker | 1 | 2 | 3 | Jan 4, 1975 | H2H |
| Helen Gourlay | 0 | 3 | 3 | Jul 21, 1972 | H2H |
| Janine Whyte | 1 | 2 | 3 | Apr 11, 1972 | H2H |
| Cynthia Doerner | 2 | 0 | 2 | Nov 22, 1974 | H2H |
| 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 |