H2H data updated: 2026-09-12 00:00 UTC
Billie Jean King holds a 6–0 lead over Cecilia Martinez in their WTA head-to-head. Across 6 main-draw meetings, Billie Jean King leads 3–0 on carpet and 2–0 on grass. Most recently, Billie Jean King won the 1974 Akron round of 32 7-5 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.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Billie Jean King | 7-5 6-2 | Cecilia Martinez | Match data | Mar 21, 1974* | R32 | Akron | WTA 250 | Carpet |
| Billie Jean King | 6-2 6-7 6-4 | Cecilia Martinez | Match data | Apr 20, 1973* | R32 | Jacksonville | WTA 250 | Clay |
| Billie Jean King | 6-1 6-3 | Cecilia Martinez | Match data | Jul 2, 1972* | R32 | Wimbledon | Grand Slam | Grass |
| Billie Jean King | 6-1 6-3 | Cecilia Martinez | Match data | Jan 16, 1972* | R16 | San Francisco | WTA 250 | Carpet |
| Billie Jean King | 6-2 6-1 | Cecilia Martinez | Match data | Aug 27, 1971* | R32 | Newport | WTA 250 | Grass |
| Billie Jean King | 6-2 6-4 | Cecilia Martinez | Match data | Feb 8, 1971* | R16 | Chattanooga | WTA 250 | Carpet |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Billie Jean King | #22 | #2 | — | 2,437 | 684 | 160 | 81.0% | 8 | 0 | 0 | 3 | 57 | 68 |
| Cecilia Martinez | — | — | — | 1,713 | 121 | 157 | 43.5% | 0 | 0 | 0 | 0 | 1 | 1 |
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 | Billie Jean King | Cecilia Martinez | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 21 | — | — | — | — | — | — | — | 1968 | 26–18 | 59.1% | — | 1,662 | 0 | 0 |
| 22 | — | — | — | — | — | — | — | 1969 | 10–13 | 43.5% | — | 1,597 | 0 | 0 |
| 23 | — | — | — | — | — | — | — | 1970 | 22–22 | 50.0% | — | 1,688 | 0 | 1 |
| 24 | 1968 | 40–5 | 88.9% | — | 1,865 | 1 | 1 | 1971 | 12–25 | 32.4% | — | 1,628 | 0 | 1 |
| 25 | 1969 | 58–14 | 80.6% | — | 2,056 | 1 | 6 | 1972 | 8–19 | 29.6% | — | 1,547 | 0 | 1 |
| 26 | 1970 | 47–11 | 81.0% | — | 2,180 | 1 | 11 | 1973 | 6–15 | 28.6% | — | 1,547 | 0 | 1 |
| 27 | 1971 | 114–15 | 88.4% | — | 2,302 | 2 | 28 | 1974 | 21–18 | 53.8% | — | 1,652 | 0 | 1 |
| 28 | 1972 | 89–15 | 85.6% | — | 2,378 | 5 | 39 | 1975 | 12–15 | 44.4% | — | 1,585 | 0 | 1 |
| 29 | 1973 | 56–12 | 82.4% | — | 2,349 | 6 | 46 | 1976 | 4–12 | 25.0% | — | 1,561 | 0 | 1 |
| 30 | 1974 | 54–8 | 87.1% | — | 2,326 | 7 | 52 | — | — | — | — | — | — | — |
| 31 | 1975 | 23–3 | 88.5% | #4 | 2,391 | 8 | 54 | — | — | — | — | — | — | — |
| 32 | 1976 | 2–2 | 50.0% | — | 2,336 | 8 | 54 | — | — | — | — | — | — | — |
| 33 | 1977 | 46–6 | 88.5% | #2 | 2,398 | 8 | 60 | — | — | — | — | — | — | — |
| 34 | 1978 | 28–12 | 70.0% | #5 | 2,336 | 8 | 60 | — | — | — | — | — | — | — |
| 35 | 1979 | 36–13 | 73.5% | #5 | 2,185 | 8 | 62 | — | — | — | — | — | — | — |
| 36 | 1980 | 39–15 | 72.2% | #6 | 2,151 | 8 | 65 | — | — | — | — | — | — | — |
| 37 | 1981 | 4–5 | 44.4% | — | 2,043 | 8 | 65 | — | — | — | — | — | — | — |
| 38 | 1982 | 26–19 | 57.8% | — | 1,941 | 8 | 66 | — | — | — | — | — | — | — |
| 39 | 1983 | 22–5 | 81.5% | — | 2,057 | 8 | 68 | — | — | — | — | — | — | — |
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 | Billie Jean King | Cecilia Martinez | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1968 | 4 | 4 | 8 | 50.0% | 1 | 1 | 2 | 50.0% | 20 | 12 | 32 | 62.5% | 1 | 1 | 2 | 50.0% |
| 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1969 | 2 | 1 | 3 | 66.7% | 2 | 3 | 5 | 40.0% | 2 | 5 | 7 | 28.6% | 4 | 3 | 7 | 57.1% |
| 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1970 | 6 | 2 | 8 | 75.0% | 6 | 13 | 19 | 31.6% | 10 | 7 | 17 | 58.8% | — | — | — | — |
| 24 | 1968 | 4 | 1 | 5 | 80.0% | 4 | 1 | 5 | 80.0% | 26 | 2 | 28 | 92.9% | 6 | 1 | 7 | 85.7% | 1971 | 3 | 6 | 9 | 33.3% | 2 | 5 | 7 | 28.6% | 6 | 7 | 13 | 46.2% | 1 | 7 | 8 | 12.5% |
| 25 | 1969 | 17 | 1 | 18 | 94.4% | 9 | 5 | 14 | 64.3% | 26 | 7 | 33 | 78.8% | 6 | 1 | 7 | 85.7% | 1972 | 0 | 4 | 4 | 0.0% | 0 | 3 | 3 | 0.0% | 8 | 9 | 17 | 47.1% | 0 | 3 | 3 | 0.0% |
| 26 | 1970 | 13 | 2 | 15 | 86.7% | 18 | 5 | 23 | 78.3% | 8 | 1 | 9 | 88.9% | 8 | 3 | 11 | 72.7% | 1973 | 1 | 2 | 3 | 33.3% | 2 | 4 | 6 | 33.3% | 3 | 5 | 8 | 37.5% | 0 | 4 | 4 | 0.0% |
| 27 | 1971 | 16 | 3 | 19 | 84.2% | 29 | 5 | 34 | 85.3% | 28 | 5 | 33 | 84.8% | 41 | 2 | 43 | 95.3% | 1974 | 1 | 2 | 3 | 33.3% | 1 | 4 | 5 | 20.0% | 7 | 6 | 13 | 53.8% | 5 | 4 | 9 | 55.6% |
| 28 | 1972 | 20 | 3 | 23 | 87.0% | 32 | 6 | 38 | 84.2% | 22 | 1 | 23 | 95.7% | 15 | 5 | 20 | 75.0% | 1975 | 1 | 3 | 4 | 25.0% | 1 | 3 | 4 | 25.0% | 7 | 4 | 11 | 63.6% | 0 | 1 | 1 | 0.0% |
| 29 | 1973 | 14 | 3 | 17 | 82.4% | 8 | 3 | 11 | 72.7% | 12 | 1 | 13 | 92.3% | 22 | 5 | 27 | 81.5% | 1976 | 2 | 3 | 5 | 40.0% | 2 | 6 | 8 | 25.0% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% |
| 30 | 1974 | 12 | 3 | 15 | 80.0% | 4 | 1 | 5 | 80.0% | 9 | 1 | 10 | 90.0% | 29 | 3 | 32 | 90.6% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 1975 | 7 | 2 | 9 | 77.8% | — | — | — | — | 11 | 1 | 12 | 91.7% | 5 | 0 | 5 | 100.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 1976 | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 1977 | 20 | 0 | 20 | 100.0% | 8 | 3 | 11 | 72.7% | 6 | 2 | 8 | 75.0% | 12 | 1 | 13 | 92.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 34 | 1978 | 4 | 2 | 6 | 66.7% | — | — | — | — | 8 | 2 | 10 | 80.0% | 16 | 8 | 24 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 35 | 1979 | 17 | 3 | 20 | 85.0% | — | — | — | — | 12 | 5 | 17 | 70.6% | 7 | 5 | 12 | 58.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 36 | 1980 | 5 | 1 | 6 | 83.3% | 3 | 2 | 5 | 60.0% | 3 | 1 | 4 | 75.0% | 28 | 11 | 39 | 71.8% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 37 | 1981 | — | — | — | — | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | 4 | 3 | 7 | 57.1% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 38 | 1982 | 0 | 2 | 2 | 0.0% | 4 | 4 | 8 | 50.0% | 13 | 4 | 17 | 76.5% | 9 | 9 | 18 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 39 | 1983 | — | — | — | — | 1 | 1 | 2 | 50.0% | 16 | 2 | 18 | 88.9% | 5 | 2 | 7 | 71.4% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 151 | 28 | 179 | 84.4% | 120 | 37 | 157 | 76.4% | 200 | 36 | 236 | 84.7% | 213 | 59 | 272 | 78.3% | — | 20 | 27 | 47 | 42.6% | 17 | 42 | 59 | 28.8% | 63 | 56 | 119 | 52.9% | 11 | 25 | 36 | 30.6% |
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 | Billie Jean King | Cecilia Martinez | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1968 | 1662 | 117.1 | — | — | — | — | -132 | — | +80 | 57.0% | +0.38 | 7–7 (50%) | — | — | -0.62 |
| 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1969 | 1597 | 112.9 | — | — | — | — | +3 | -101 | +76 | 42.9% | -0.25 | 2–3 (40%) | — | — | -0.23 |
| 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1970 | 1689 | 132.1 | — | — | — | — | +25 | -192 | +66 | 53.2% | +0.37 | 2–6 (25%) | 1–0 | — | +0.68 |
| 24 | 1968 | 1865 | 141.1 | — | — | — | — | -83 | -273 | +141 | 87.2% | +2.72 | 6–2 (75%) | — | — | +1.76 | 1971 | 1629 | 125.6 | — | — | — | — | -82 | -110 | +101 | 36.4% | -0.95 | 1–4 (20%) | 0–2 | — | +0.12 |
| 25 | 1969 | 2056 | 154.1 | — | — | — | — | +176 | -365 | +42 | 75.5% | +2.11 | 12–5 (71%) | — | — | -3.94 | 1972 | 1547 | 117.8 | — | — | — | — | -110 | -63 | +101 | 35.6% | -1.07 | 0–7 (0%) | 2–1 (67%) | 91.6 | +0.20 |
| 26 | 1970 | 2181 | 166.1 | — | — | — | — | +139 | -229 | +41 | 75.0% | +2.11 | 11–5 (69%) | 0–1 | — | -9.32 | 1973 | 1548 | 125.4 | — | — | — | — | -123 | -66 | +104 | 35.4% | -0.81 | 3–5 (38%) | 1–2 (33%) | 98.5 | +0.09 |
| 27 | 1971 | 2303 | 170.6 | — | — | — | — | +240 | -117 | +9 | 84.6% | +2.55 | 20–4 (83%) | 16–4 (80%) | 116.1 | -6.69 | 1974 | 1653 | 130.1 | — | — | — | — | -120 | -179 | +26 | 51.6% | +0.43 | 9–6 (60%) | 2–8 (20%) | 99.6 | +1.28 |
| 28 | 1972 | 2378 | 173.1 | — | — | — | — | +144 | -67 | +84 | 82.1% | +2.37 | 13–3 (81%) | 8–7 (53%) | 102.1 | -8.73 | 1975 | 1586 | 116.7 | — | — | — | — | -18 | -125 | +131 | 47.6% | -0.27 | 3–6 (33%) | 1–3 (25%) | 94.9 | +1.45 |
| 29 | 1973 | 2349 | 168.6 | — | — | — | — | +152 | -82 | +159 | 82.7% | +2.42 | 8–5 (62%) | 9–5 (64%) | 100.8 | -4.79 | 1976 | 1562 | 114.1 | — | — | — | — | -35 | -100 | — | 33.3% | -1.08 | 2–5 (29%) | 2–1 (67%) | — | -0.09 |
| 30 | 1974 | 2327 | 171.4 | — | — | — | — | +153 | -73 | +194 | 81.8% | +2.54 | 10–2 (83%) | 3–2 (60%) | 104.2 | -3.91 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 1975 | 2391 | 169.1 | — | — | — | — | +33 | — | +109 | 85.7% | +2.70 | 2–2 (50%) | 2–0 | — | -2.95 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 1976 | 2337 | 113.7 | — | — | — | — | +67 | — | — | 50.0% | -0.13 | — | 1–0 | — | -0.15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 1977 | 2398 | 164.8 | — | — | — | — | +140 | -140 | +131 | 76.9% | +1.69 | 16–1 (94%) | 5–0 (100%) | 111.3 | -3.92 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 34 | 1978 | 2337 | 167.5 | — | — | — | — | +44 | — | +160 | 73.7% | +1.86 | 2–6 (25%) | 3–1 (75%) | 92.9 | -4.22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 35 | 1979 | 2185 | 156.7 | — | — | — | — | +75 | — | +139 | 71.4% | +1.51 | 8–8 (50%) | 9–4 (69%) | 94.9 | -3.21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 36 | 1980 | 2152 | 165.5 | — | — | — | — | +100 | +122 | +192 | 69.4% | +1.09 | 9–6 (60%) | 11–4 (73%) | 100.7 | -3.21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 37 | 1981 | 2044 | 121.4 | — | — | — | — | +105 | — | — | 44.4% | -0.67 | — | — | — | -0.51 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 38 | 1982 | 1941 | 150.4 | — | — | — | — | -6 | +196 | +304 | 56.2% | +0.42 | 12–7 (63%) | 7–5 (58%) | 98.0 | -2.64 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 39 | 1983 | 2057 | 155.9 | — | — | — | — | -43 | — | +231 | 79.3% | +1.93 | 2–2 (50%) | 0–2 | — | -1.11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 2437 | 170.4 | — | — | — | — | +124 | -123 | +121 | 77.5% | +2.03 | 131–58 (69%) | 74–35 (68%) | 111.2 | -6.96 | — | 1713 | 127.5 | — | — | — | — | -71 | -135 | +84 | 45.8% | -0.22 | 29–49 (37%) | 9–17 (35%) | 90.1 | +1.05 |
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 |
|---|---|---|---|---|---|
| Rosie Casals | 34 | 6 | 40 | Jun 26, 1983 | H2H |
| Virginia Wade | 21 | 8 | 29 | Mar 13, 1981 | H2H |
| Francoise Durr | 22 | 7 | 29 | Oct 27, 1977 | H2H |
| Kerry Reid | 20 | 8 | 28 | Jun 22, 1979 | H2H |
| Nancy Richey | 17 | 9 | 26 | Apr 1, 1977 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Francoise Durr | 0 | 7 | 7 | Oct 11, 1974 | H2H |
| Margaret Court | 0 | 7 | 7 | Sep 4, 1973 | H2H |
| Betty Stove | 0 | 6 | 6 | Sep 15, 1976 | H2H |
| Peggy Michel | 3 | 3 | 6 | Dec 19, 1974 | H2H |
| Billie Jean King | 0 | 6 | 6 | Mar 21, 1974 | H2H |