Player data updated: 2026-09-01 02:16 UTC

Stephanie Defina

USA Age 80 WTA Tour years active: 1968–1974

Stephanie Defina represented the United States on the WTA Tour. In TennisDB's records, Stephanie Defina finished with a career record of 93–62 and 7 singles titles. Weekly WTA ranking coverage before 1984 is incomplete outside audited No. 1 and year-end Top 10 anchors.

Peak ranking

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Elo peak

1819 (77th percentile)

Career record

93–62 (60.0%)

Career titles

Records cover recorded main-draw singles results in TennisDB's WTA event archive, including credited walkovers; qualifying is shown separately below.

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WTA Matches full match log →

Stephanie Defina's recent, live, and scheduled WTA matches
Opponent	Score	Result	H2H	Match Data	Date	Round	Tournament	Category	Surface
Mona Guerrant	6-7 4-6	L	H2H	Match data	Sep 26, 1974*	R32	Denver	WTA 250	Carpet
Julie Heldman	3-6 2-6	L	H2H	Match data	Aug 2, 1973*	R32	Denver	WTA 250	Hard
Sandra Walsham	3-6 2-6	L	H2H	Match data	Jan 4, 1973*	R64	Sydney International	WTA 500	Grass
Valerie Ziegenfuss	2-6 2-6	L	H2H	Match data	Aug 18, 1972*	R16	Denver	WTA 250	Hard
Corinne Molesworth	7-6 6-4	W	H2H	Match data	Aug 17, 1972*	R32	Denver	WTA 250	Hard

Rivals all rivalries →

Stephanie Defina's most-played WTA rivals
Opponent	W	L	M	Last Played	H2H
Linda Tuero	2	4	6	May 30, 1970	H2H
Valerie Ziegenfuss	1	4	5	Aug 18, 1972	H2H
Mary Ann Eisel	1	4	5	Jan 10, 1971	H2H
Nancy Richey	1	4	5	Apr 11, 1970	H2H
Virginia Wade	1	3	4	Feb 4, 1972	H2H

Titles (7)

Stephanie Defina titles by season and category
Season	Age	Titles	GS	WTA 1000 including documented historical predecessor categories	WTA 500 including documented historical predecessor categories	WTA 250 including documented historical predecessor categories	WTA Finals	Tournaments
1968	22	1	—	—	—	1	—	Atlanta
1969	23	4	—	—	—	4	—	Fort Lauderdale, Miami Open, Orlando, West Palm Beach
1970	24	2	—	—	—	2	—	Orlando, Tulsa
Total		7	—	—	—	7	—

Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.

Career Results

Stephanie Defina career results by season
Season	Age	W	L	M	Win %	Start Rank	End Rank
1968	22	33	22	55	60.0%	—	—
1969	23	25	9	34	73.5%	—	—
1970	24	33	17	50	66.0%	—	—
1971	25	1	9	10	10.0%	—	—
1972	26	1	2	3	33.3%	—	—
1973	27	0	2	2	0.0%	—	—
1974	28	0	1	1	0.0%	—	—
Career		93	62	155	60.0%	—	—

Career Results by Surface

Stephanie Defina career results by season and surface
Season	Age	Hard				Clay				Grass				Carpet				Total
Season	Age	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
1968	22	4	6	10	40.0%	20	7	27	74.1%	7	7	14	50.0%	2	2	4	50.0%	33	22	55	60.0%
1969	23	1	1	2	50.0%	17	5	22	77.3%	—	—	—	—	6	2	8	75.0%	25	9	34	73.5%
1970	24	4	3	7	57.1%	26	9	35	74.3%	1	2	3	33.3%	2	2	4	50.0%	33	17	50	66.0%
1971	25	—	—	—	—	0	2	2	0.0%	0	1	1	0.0%	1	6	7	14.3%	1	9	10	10.0%
1972	26	1	1	2	50.0%	0	1	1	0.0%	—	—	—	—	—	—	—	—	1	2	3	33.3%
1973	27	0	1	1	0.0%	—	—	—	—	0	1	1	0.0%	—	—	—	—	0	2	2	0.0%
1974	28	—	—	—	—	—	—	—	—	—	—	—	—	0	1	1	0.0%	0	1	1	0.0%
Career	—	10	12	22	45.5%	63	24	87	72.4%	8	11	19	42.1%	11	13	24	45.8%	93	62	155	60.0%

Advanced Stats

Stephanie Defina advanced statistics by season
Season	Age	Elo	P+	Serve+	Return+	PD	TPW%	Hard Elo	Clay Elo	Grass Elo	Set Win %	Set Margin	Dec. Set	Tiebreak	Pressure+	Schedule
1968	22	1678	117.2	—	—	—	—	-196	+95	-126	56.8%	+0.45	13–9 (59%)	—	—	-1.36
1969	23	1761	138.3	—	—	—	—	-91	+61	—	71.6%	+1.86	3–3 (50%)	—	—	+0.05
1970	24	1789	133.4	—	—	—	—	-88	+98	-231	62.9%	+1.05	7–4 (64%)	1–0	—	+0.80
1971	25	1707	111.7	—	—	—	—	-58	—	—	10.0%	-2.90	—	—	—	-0.83
1972	26	1714	107.0	—	—	—	—	—	—	—	33.3%	-1.83	—	1–0	—	-0.95
1973	27	1686	100.5	—	—	—	—	—	—	—	0.0%	-3.50	—	—	—	-0.40
1974	28	1675	102.4	—	—	—	—	—	—	—	0.0%	-1.50	—	0–1	—	-0.06
Career		1819	129.6	—	—	—	—	-120	+87	-145	57.7%	+0.65	23–16 (59%)	2–1 (67%)	104.5	-1.80

Tournament Results by Category

Grand Slams

Stephanie Defina Grand Slams results by season
Season	Age	W	USO	W-L Win %
1968	22	R32	R64	1–2 (33%)
1970	24	R128	R32	1–2 (33%)
1971	25	—	R64	0–1 (0%)
W-L		1–2 (33%)	1–3 (25%)	2–5 (29%)

WTA 500

Stephanie Defina WTA 500 results by season
Season	Age	SPB	SYD	W-L Win %
1968	22	SF	—	1–1 (50%)
1970	24	SF	—	3–1 (75%)
1973	27	—	R64	0–1 (0%)
W-L		4–2 (67%)	0–1 (0%)	4–3 (57%)

WTA 250

Stephanie Defina WTA 250 results by season
Season	Age	ATL	HOU	KIT	MIA	NAP	QUE	AGA	BAL	BLO	BOS	BRA	CAP	CHA	CHA	CHA	CHE	DEN	DUR	DUT	FOR	FOR	JAC	KAN	KIN	LON	MAN	MIL	NEW	OKL	ORL	PEN	PHI	PHO	POM	POR	RIC	SAC	SAN	SAN	SUR	TUL	WEM	WES	W-L Win %
1968	22	W	—	—	—	F	R16	—	QF	QF	SF	—	QF	F	—	—	R32	—	QF	—	—	—	—	—	—	—	R32	SF	R16	—	—	F	—	QF	F	QF	F	—	—	R16	QF	—	—	—	31–19 (62%)
1969	23	SF	R16	—	W	—	—	SF	—	—	F	—	—	QF	—	—	—	—	—	—	W	—	—	—	SF	—	—	—	—	—	W	—	—	—	SF	—	SF	—	—	R16	—	—	—	W	25–9 (74%)
1970	24	—	—	R32	—	—	—	QF	—	—	QF	SF	—	—	QF	—	—	—	—	SF	SF	—	SF	QF	—	—	—	—	—	—	W	SF	—	—	SF	—	—	R16	—	SF	—	W	R16	F	29–14 (67%)
1971	25	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R16	—	—	—	—	R16	—	—	QF	—	QF	—	R16	—	R16	—	—	R16	—	—	—	—	—	R16	—	—	—	—	—	1–8 (11%)
1972	26	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R16	—	—	—	R32	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1–2 (33%)
1973	27	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R32	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0–1 (0%)
1974	28	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R32	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0–1 (0%)
W-L		3–1 (75%)	0–1 (0%)	1–0 (100%)	3–0 (100%)	4–1 (80%)	2–1 (67%)	4–2 (67%)	1–1 (50%)	1–1 (50%)	7–3 (70%)	2–1 (67%)	0–1 (0%)	4–2 (67%)	1–1 (50%)	0–1 (0%)	1–1 (50%)	1–3 (25%)	1–1 (50%)	3–1 (75%)	5–2 (71%)	0–1 (0%)	2–1 (67%)	0–2 (0%)	1–1 (50%)	1–1 (50%)	0–1 (0%)	3–2 (60%)	0–1 (0%)	0–1 (0%)	6–0 (100%)	4–2 (67%)	0–1 (0%)	1–1 (50%)	7–3 (70%)	1–1 (50%)	4–2 (67%)	0–1 (0%)	0–1 (0%)	4–3 (57%)	2–1 (67%)	3–0 (100%)	0–1 (0%)	4–1 (80%)	87–54 (62%)

Results show the best round reached per tournament and season.

WTA Ranking History full ranking history →

Career high

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Career-high date

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First Top 100

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First Top 50

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First Top 20

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First Top 10

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Ranking History Matrix

No ranking history available.

Data coverage: Weekly WTA ranking snapshots are unavailable before 1984. Audited official No. 1 change dates and year-end Top 10 ranks are included, but weekly counts and ranks outside those anchors remain incomplete.

Frequently Asked Questions

How old is Stephanie Defina?: Stephanie Defina is 80 years old, born on March 8, 1946.
Which country does Stephanie Defina represent?: Stephanie Defina represents United States in TennisDB's WTA records.
How many Grand Slams has Stephanie Defina won?: Stephanie Defina has not won a Grand Slam title.
How many WTA 1000 titles has Stephanie Defina won?: TennisDB does not group any of Stephanie Defina's titles under the modern WTA 1000 category.
How many WTA titles has Stephanie Defina won?: Stephanie Defina has won 7 WTA singles titles across all categories. The most recent was Tulsa in 1970.
What is Stephanie Defina's career win-loss record?: Stephanie Defina has a career WTA singles record of 93 wins and 62 losses (60.0%).
Which seasons of Stephanie Defina's career appear in TennisDB?: Stephanie Defina appears in TennisDB's WTA main-tour match records from 1968 through 1974.
On which surface does Stephanie Defina have the highest recorded win rate?: Among surfaces with at least 20 recorded matches, Stephanie Defina's highest WTA main-draw win rate is on clay: 72.4% (63–24).
Who has Stephanie Defina faced most often?: Stephanie Defina's most frequent opponent is Linda Tuero, with a head-to-head record of 2–4 across 6 meetings.