Player data updated: 2026-09-13 02:16 UTC

Jan-Michael Gambill

USA Age 49 190 cm / 6'3" Plays: Right-Handed, Two-Handed Backhand ATP Tour years active: 1995–2007

Jan-Michael Gambill represented the United States on the ATP Tour and reached a career high of No. 14. TennisDB's records show a singles record of 201–191 and 3 singles titles.

Peak singles rank

14 (Jun 18, 2001)

Elo peak

1949 (87th percentile)

Singles record

201–191 (51.3%)

Singles titles

Prize money

$3,612,893

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

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ATP Matches full match log →

Jan-Michael Gambill's recent, live, and scheduled ATP matches
Opponent	Score	Result	H2H	Match Data	Date	Round	Tournament	Category	Surface
Giovanni Lapentti #234	4-6 6-3 4-6	L	H2H	Match data	Feb 8, 2010	Q2 Q	San Jose	ATP 250	Hard
Brad Weston	7-6(5) 6-3	W	H2H	Match data	Feb 8, 2010	Q1 Q	San Jose	ATP 250	Hard
Sam Warburg #159	6-7(2) 7-6(2) 3-6	L	H2H	Match data	Feb 18, 2008	Q2 Q	San Jose	International Series → modern equivalent ATP 250	Hard
Lester Cook #356	6-3 7-6(7)	W	H2H	Match data	Feb 18, 2008	Q1 Q	San Jose	International Series → modern equivalent ATP 250	Hard
Paul Goldstein #101	4-5 (ret.)	L	H2H	Match data	Aug 5, 2007	Q1 Q	Canadian Open	Masters 1000	Hard

Qualifying matches are shown here but excluded from main-draw summaries and leaderboards.

Rivals all rivalries →

Jan-Michael Gambill's most-played ATP rivals
Opponent	W	L	M	Last Played	H2H
Andre Agassi	2	11	13	Feb 14, 2004	H2H
Sjeng Schalken	6	3	9	Oct 16, 2003	H2H
Justin Gimelstob	4	4	8	Jan 6, 2005	H2H
Tim Henman	3	4	7	Aug 4, 2006	H2H
Michael Chang	4	3	7	Jul 25, 2002	H2H

Singles Titles (3)

Jan-Michael Gambill singles titles by season and category
Season	Age	Singles titles	GS	Masters 1000 including documented historical predecessor categories	ATP 500 including documented historical predecessor categories	ATP 250 including documented historical predecessor categories	ATP Finals	Tournaments
1999	22	1	—	—	—	1	—	Scottsdale
2001	24	1	—	—	—	1	—	Delray Beach Open
2003	26	1	—	—	—	1	—	Delray Beach Open
Total		3	—	—	—	3	—

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

Career Results

Jan-Michael Gambill career results by season
Season	Age	Type	W	L	M	Win %	Start Rank	End Rank
1995	18	ATP	0	1	1	0.0%	—	—
1997	20	ATP	3	5	8	37.5%	476	186
1998	21	ATP	31	23	54	57.4%	186	38
1999	22	ATP	25	25	50	50.0%	38	58
2000	23	ATP	33	26	59	55.9%	57	33
2001	24	ATP	35	22	57	61.4%	33	21
2002	25	ATP	28	26	54	51.9%	21	42
2003	26	ATP	22	25	47	46.8%	33	51
2004	27	ATP	18	25	43	41.9%	51	95
2005	28	Qualifying Q	2	1	3	66.7%	—	—
2005	28	ATP	5	10	15	33.3%	95	191
2006	29	ATP	1	1	2	50.0%	192	687
2007	30	Qualifying Q	0	3	3	0.0%	—	—
2007	30	ATP	0	2	2	0.0%	685	1,107
2008	31	Qualifying Q	1	1	2	50.0%	—	—
2010	33	Qualifying Q	1	1	2	50.0%	—	—
Career		—	201	191	392	51.3%	—	—

Career Results by Surface

Jan-Michael Gambill career results by season and surface
Season	Age	Type	Hard				Clay				Grass				Carpet				Total
Season	Age	Type	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
1995	18	ATP	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	0	1	1	0.0%
1997	20	ATP	3	4	7	42.9%	0	1	1	0.0%	—	—	—	—	—	—	—	—	3	5	8	37.5%
1998	21	ATP	23	13	36	63.9%	3	4	7	42.9%	2	3	5	40.0%	3	3	6	50.0%	31	23	54	57.4%
1999	22	ATP	20	15	35	57.1%	1	5	6	16.7%	3	3	6	50.0%	1	2	3	33.3%	25	25	50	50.0%
2000	23	ATP	20	17	37	54.1%	3	4	7	42.9%	8	3	11	72.7%	2	2	4	50.0%	33	26	59	55.9%
2001	24	ATP	29	13	42	69.0%	2	4	6	33.3%	2	3	5	40.0%	2	2	4	50.0%	35	22	57	61.4%
2002	25	ATP	24	16	40	60.0%	1	5	6	16.7%	3	2	5	60.0%	0	3	3	0.0%	28	26	54	51.9%
2003	26	ATP	20	17	37	54.1%	0	5	5	0.0%	2	3	5	40.0%	—	—	—	—	22	25	47	46.8%
2004	27	ATP	15	18	33	45.5%	0	3	3	0.0%	3	4	7	42.9%	—	—	—	—	18	25	43	41.9%
2005	28	Qualifying Q	—	—	—	—	—	—	—	—	2	1	3	66.7%	—	—	—	—	2	1	3	66.7%
2005	28	ATP	5	10	15	33.3%	—	—	—	—	—	—	—	—	—	—	—	—	5	10	15	33.3%
2006	29	ATP	1	1	2	50.0%	—	—	—	—	—	—	—	—	—	—	—	—	1	1	2	50.0%
2007	30	Qualifying Q	0	3	3	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	0	3	3	0.0%
2007	30	ATP	0	1	1	0.0%	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	2	2	0.0%
2008	31	Qualifying Q	1	1	2	50.0%	—	—	—	—	—	—	—	—	—	—	—	—	1	1	2	50.0%
2010	33	Qualifying Q	1	1	2	50.0%	—	—	—	—	—	—	—	—	—	—	—	—	1	1	2	50.0%
Career	—	—	160	126	286	55.9%	10	32	42	23.8%	23	21	44	52.3%	8	12	20	40.0%	201	191	392	51.3%

Career Results by Opponent Rank

Jan-Michael Gambill career results by season and opponent rank
Season	Age	1-10				11-30				31-100				100+				Total
Season	Age	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
1995	18	0	0	—	—	0	0	—	—	0	0	—	—	0	1	1	0.0%	0	1	1	0.0%
1997	20	0	1	1	0.0%	0	1	1	0.0%	3	2	5	60.0%	0	1	1	0.0%	3	5	8	37.5%
1998	21	2	4	6	33.3%	4	3	7	57.1%	15	9	24	62.5%	9	6	15	60.0%	30	22	52	57.7%
1999	22	3	6	9	33.3%	1	8	9	11.1%	11	10	21	52.4%	8	1	9	88.9%	23	25	48	47.9%
2000	23	4	4	8	50.0%	6	10	16	37.5%	14	10	24	58.3%	8	2	10	80.0%	32	26	58	55.2%
2001	24	2	7	9	22.2%	6	4	10	60.0%	17	8	25	68.0%	9	3	12	75.0%	34	22	56	60.7%
2002	25	1	8	9	11.1%	4	7	11	36.4%	16	9	25	64.0%	7	2	9	77.8%	28	26	54	51.9%
2003	26	1	2	3	33.3%	1	8	9	11.1%	10	12	22	45.5%	10	2	12	83.3%	22	24	46	47.8%
2004	27	0	5	5	0.0%	2	6	8	25.0%	5	10	15	33.3%	10	4	14	71.4%	17	25	42	40.5%
2005	28	0	0	—	—	1	2	3	33.3%	2	6	8	25.0%	2	2	4	50.0%	5	10	15	33.3%
2006	29	0	0	—	—	0	0	—	—	0	1	1	0.0%	1	0	1	100.0%	1	1	2	50.0%
2007	30	0	0	—	—	0	0	—	—	0	1	1	0.0%	0	1	1	0.0%	0	2	2	0.0%
Career		13	37	50	26.0%	25	49	74	33.8%	93	78	171	54.4%	64	25	89	71.9%	195	189	384	50.8%

Opponent ranking data available for 384/392 (98.0%) of Jan-Michael Gambill's ATP main draw matches.

Performance Stats

Jan-Michael Gambill performance statistics by season
Season	Age	Sample	Aces/M	DFs/M	1st Sv%	1st Sv Pts%	2nd Sv Pts%	BP Saved%	BP Conv%	Svc Pts%	Ret Pts%
2003	26	43/47	10.1	3.1	56.5%	75.0%	47.9%	60.7%	48.3%	63.4%	36.0%
2004	27	43/43	11.7	3.1	59.1%	76.0%	47.7%	57.9%	38.7%	64.3%	34.3%
2005	28	15/15	12.3	3.9	56.6%	76.7%	45.9%	58.6%	27.7%	63.3%	32.1%
2006	29	2/2	11.5	7.0	47.8%	73.2%	44.1%	59.7%	35.0%	57.0%	39.4%
2007	30	2/2	9.5	5.5	58.7%	79.4%	39.2%	37.5%	20.8%	62.8%	26.7%
Career		105/392	11.1	3.4	57.5%	75.7%	47.3%	58.8%	40.7%	63.6%	34.6%

Detailed serve and return statistics available for 105/392 (26.8%) of Jan-Michael Gambill's ATP main draw matches.

Advanced Stats

Jan-Michael Gambill 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
1995	18	1487	99.7	—	—	—	—	—	—	—	0.0%	-3.00	—	—	—	+0.04
1997	20	1520	116.3	—	—	—	—	+18	—	—	33.3%	-1.17	1–0	3–1 (75%)	—	-0.59
1998	21	1755	144.7	—	—	—	—	+27	-222	-139	53.4%	+0.32	13–4 (76%)	11–12 (48%)	111.1	+0.72
1999	22	1763	145.0	—	—	—	—	+37	-263	-154	51.2%	+0.26	8–11 (42%)	10–9 (53%)	102.4	-2.53
2000	23	1819	143.8	—	—	—	—	-27	-296	-44	56.3%	+0.60	10–10 (50%)	10–17 (37%)	96.8	-1.79
2001	24	1759	150.9	—	—	—	—	+67	-256	-39	61.9%	+0.81	8–6 (57%)	11–10 (52%)	99.4	+0.99
2002	25	1756	148.6	—	—	—	—	+48	-275	-49	51.9%	+0.44	11–10 (52%)	11–14 (44%)	92.3	-0.54
2003	26	1644	133.1	+0.95	-1.36	0.983	50.0%	+72	-213	+27	48.2%	+0.07	5–6 (45%)	9–9 (50%)	96.5	+1.55
2004	27	1596	125.6	+0.40	-1.44	0.961	49.5%	+33	-178	+70	44.1%	-0.30	3–7 (30%)	13–11 (54%)	98.0	+1.48
2005	28	1559	116.9	-1.32	-3.12	0.876	47.9%	+9	—	—	33.3%	-0.92	2–2 (50%)	4–3 (57%)	101.5	+0.61
2006	29	1569	105.0	-1.55	+1.41	0.916	48.6%	—	—	—	40.0%	-0.60	1–0	—	—	+0.02
2007	30	1505	103.5	-0.27	-2.33	0.719	44.4%	—	—	—	0.0%	-1.75	—	0–1	—	+0.01
2008	31	1506	100.9	—	—	—	—	—	—	—	—	—	—	—	—	—
2010	33	1508	103.1	—	—	—	—	—	—	—	—	—	—	—	—	—
Career		1949	145.6	+0.33	-1.61	0.952	49.4%	+35	-250	-44	51.3%	+0.24	62–56 (53%)	82–87 (49%)	100.1	-0.01

Tournament Results by Category

Grand Slams

Jan-Michael Gambill Grand Slams results by season
Season	Age	AO	RG	W	USO	W-L Win %
1997	20	—	—	—	R128	0–1 (0%)
1998	21	R128	R64	R64	R32	4–4 (50%)
1999	22	R128	R128	R64	R64	2–4 (33%)
2000	23	R128	R64	QF	R32	7–4 (64%)
2001	24	R128	R128	R128	R64	1–4 (20%)
2002	25	R128	R128	R64	R16	4–4 (50%)
2003	26	R64	R128	R64	R64	3–4 (43%)
2004	27	R64	R128	R32	R64	4–4 (50%)
2005	28	R128	—	Q3	R128	2–3 (40%)
W-L		2–8 (20%)	2–7 (22%)	12–8 (60%)	11–9 (55%)	27–32 (46%)

Masters 1000

Jan-Michael Gambill Masters 1000 results by season
Season	Age	CAN	CIN	HAM	IW	MAD	MC	MIA	PAR	ITA	STU	W-L Win %
1998	21	R32	R16	—	SF	—	—	R128	—	—	QF	10–5 (67%)
1999	22	R32	R32	R32	R32	—	—	R64	—	R64	—	5–6 (45%)
2000	23	—	—	R32	R64	—	—	QF	R16	—	R64	7–5 (58%)
2001	24	R16	QF	R16	QF	—	—	F	—	R64	R64	15–7 (68%)
2002	25	—	R32	R64	R16	R32	R64	R32	R64	—	—	5–7 (42%)
2003	26	R64	R64	R64	R64	R16	—	R64	—	R64	—	3–7 (30%)
2004	27	—	R64	—	R64	—	—	R128	—	—	—	1–3 (25%)
2005	28	—	—	—	R128	—	—	—	—	—	—	0–1 (0%)
2007	30	Q1	—	—	Q1	—	—	—	—	—	—	0–2 (0%)
W-L		4–5 (44%)	7–6 (54%)	4–5 (44%)	11–9 (55%)	3–2 (60%)	0–1 (0%)	12–7 (63%)	2–2 (50%)	0–3 (0%)	3–3 (50%)	46–43 (52%)

ATP 500

Jan-Michael Gambill ATP 500 results by season
Season	Age	BAR	NAP	TKY	VIE	WAS	LON	MEM	NEW	BRI	W-L Win %
1995	18	—	R64	—	—	—	—	—	—	—	0–1 (0%)
1997	20	—	—	—	—	—	—	R64	R32	—	1–2 (33%)
1998	21	—	—	SF	—	R64	—	R16	—	QF	8–4 (67%)
1999	22	—	—	—	—	R64	R32	QF	—	QF	4–4 (50%)
2000	23	—	—	—	R32	QF	R32	R16	—	—	3–4 (43%)
2001	24	—	—	—	—	R16	—	QF	—	—	3–2 (60%)
2002	25	—	—	R64	—	R64	—	SF	—	—	3–3 (50%)
2003	26	—	—	QF	R32	—	—	R16	—	—	3–3 (50%)
2004	27	R64	—	R16	—	—	—	QF	—	—	3–3 (50%)
2005	28	—	—	R32	—	—	—	QF	—	—	3–2 (60%)
W-L		0–1 (0%)	0–1 (0%)	8–5 (62%)	0–2 (0%)	3–5 (38%)	0–2 (0%)	15–9 (62%)	1–1 (50%)	4–2 (67%)	31–28 (53%)

ATP 250

Jan-Michael Gambill ATP 250 results by season
Season	Age	ADE	ATL	ASB	BAS	CHN	DLB	DOH	LIB	HKG	MTP	MET	NAP	NWP	QUE	SHA	STO	WAS	LON	LOS	MIL	EAS	ORL	OST	SAN	SCO	ST.	SYD	TOU	U.S	W-L Win %
1997	20	—	—	QF	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R32	—	—	—	—	—	—	—	2–2 (50%)
1998	21	—	R16	—	—	—	—	—	R32	—	—	—	—	—	R32	R16	—	—	—	R16	—	—	R16	R32	QF	QF	R32	—	—	—	9–10 (47%)
1999	22	—	R32	—	—	—	—	—	—	—	R32	—	—	—	R32	QF	SF	—	R32	R32	—	R16	R32	—	R32	W	—	R16	—	—	14–11 (56%)
2000	23	R16	—	R16	R32	—	R16	—	—	—	—	—	—	—	R32	—	R16	—	R16	F	—	SF	R32	—	R32	—	R16	—	QF	—	16–13 (55%)
2001	24	—	—	QF	R32	—	W	—	—	—	—	—	—	—	QF	—	—	—	R32	QF	QF	R32	—	—	SF	—	—	—	—	R32	16–9 (64%)
2002	25	—	—	R32	—	—	SF	—	—	R32	R32	—	—	—	R16	—	R16	—	R16	F	R32	—	—	—	SF	—	R16	—	—	R32	16–12 (57%)
2003	26	—	—	R16	—	—	W	F	—	—	—	—	R16	—	R32	—	R32	—	R32	R32	—	R32	—	—	R16	—	R32	—	—	R32	13–11 (54%)
2004	27	—	—	R32	—	—	R32	R32	—	—	—	R32	R64	R32	R64	QF	R16	R16	R16	—	—	R16	—	—	QF	QF	R32	—	—	—	10–15 (40%)
2005	28	—	—	—	—	R32	R16	—	—	—	—	—	R32	—	—	—	—	—	—	—	—	—	—	—	R32	R32	—	—	—	—	2–5 (29%)
2006	29	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	R16	—	—	—	—	—	—	—	—	—	—	—	—	1–1 (50%)
2007	30	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	Q1	—	—	—	—	—	—	—	—	—	—	—	R32	0–2 (0%)
2008	31	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	Q2	—	—	—	—	—	1–1 (50%)
2010	33	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	Q2	—	—	—	—	—	1–1 (50%)
W-L		1–1 (50%)	1–2 (33%)	6–6 (50%)	0–2 (0%)	0–1 (0%)	15–4 (79%)	4–2 (67%)	0–1 (0%)	0–1 (0%)	1–2 (33%)	0–1 (0%)	2–3 (40%)	0–1 (0%)	8–7 (53%)	5–3 (62%)	6–5 (55%)	2–3 (40%)	4–6 (40%)	11–6 (65%)	2–2 (50%)	5–5 (50%)	1–4 (20%)	0–1 (0%)	13–10 (57%)	9–3 (75%)	2–5 (29%)	1–1 (50%)	2–1 (67%)	0–4 (0%)	101–93 (52%)

Results show the best round reached per tournament and season.

ATP Ranking History full ranking history →

Career high

Career-high date

Jun 18, 2001

First Top 100

Mar 16, 1998

First Top 50

Sep 14, 1998

First Top 20

Mar 12, 2001

First Top 10

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Ranking History Matrix

Jan-Michael Gambill ranking history by month and season
Season	Age	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1996	19	554	554	559	548	512	506	514	474	482	519	474	479
1997	20	319	306	286	273	293	299	236	219	204	186	180	186
1998	21	227	151	82	68	66	60	65	57	48	49	38	38
1999	22	38	44	46	50	50	49	48	53	55	56	58	58
2000	23	55	63	86	67	69	56	29	27	25	27	33	33
2001	24	30	26	19	15	15	16	21	19	20	21	21	21
2002	25	22	22	29	46	53	58	46	57	43	43	42	42
2003	26	34	38	42	40	38	42	48	50	62	52	51	51
2004	27	62	60	83	85	86	84	79	77	74	92	92	95
2005	28	103	108	123	124	118	127	147	151	161	193	192	191
2006	29	195	283	305	328	331	344	503	404	451	618	685	687
2007	30	692	691	683	669	677	684	672	1107	—	—	—	—
2008	31	—	—	—	—	—	1137	1153	1134	1147	1149	1140	1147
2009	32	1146	1136	1129	1124	1122	1122	—	—	—	927	903	891
2010	33	892	826	817	821	814	816	806	809	813	1068	1050	1051
2011	34	1302	1301	1312	1311	1307	1325	1334	1353	1343	1352	—	—

Similar Players

Other ATP players with comparable peak level, era, career record, and career scale.

Jan-Michael Gambill's most statistically similar ATP players
Player	Country	Peak ranking	Peak Elo	M	W	L	Win %	Prize money	Titles	M1000	Years	Rivalries	Match log
Younes El Aynaoui	MAR	#14	1,923	465	244	221	52.5%	$4,044,667	5	0	1990–2010	Rivalries	Match log
Andrei Pavel	ROU	#13	1,897	501	249	252	49.7%	$5,225,028	3	1	1992–2009	Rivalries	Match log
Martin Verkerk	NED	#14	1,857	120	56	64	46.7%	$1,564,520	2	0	1998–2008	Rivalries	Match log
Agustin Calleri	ARG	#16	1,901	385	201	184	52.2%	$3,753,387	2	0	1999–2009	Rivalries	Match log
Jan Siemerink	NED	#14	1,902	523	261	262	49.9%	$4,347,693	4	0	1990–2002	Rivalries	Match log
Dominik Hrbaty	SVK	#12	1,941	627	328	299	52.3%	$7,070,095	6	0	1996–2010	Rivalries	Match log
Fabrice Santoro	FRA	#17	1,890	897	462	435	51.5%	$10,013,832	6	0	1989–2010	Rivalries	Match log
Robby Ginepri	USA	#15	1,927	380	185	195	48.7%	$3,897,123	3	0	2001–2014	Rivalries	Match log
Vincent Spadea	USA	#18	1,876	661	311	350	47.0%	$5,004,860	1	0	1993–2010	Rivalries	Match log
Juan Ignacio Chela	ARG	#15	1,908	577	307	270	53.2%	$6,572,494	6	0	1999–2012	Rivalries	Match log
Franco Squillari	ARG	#11	1,846	306	146	160	47.7%	$2,504,591	3	0	1994–2004	Rivalries	Match log
Max Mirnyi	BLR	#18	1,914	446	221	225	49.6%	$11,763,620	1	0	1996–2008	Rivalries	Match log

Frequently Asked Questions

How old is Jan-Michael Gambill?: Jan-Michael Gambill is 49 years old, born on June 3, 1977.
Which country does Jan-Michael Gambill represent?: Jan-Michael Gambill represents United States in TennisDB's ATP records.
How tall is Jan-Michael Gambill?: Jan-Michael Gambill is 190 cm / 6'3".
Does Jan-Michael Gambill use a one-handed or two-handed backhand?: Jan-Michael Gambill uses a two-handed backhand.
Is Jan-Michael Gambill left-handed or right-handed?: Jan-Michael Gambill plays right-handed.
How many Grand Slam singles titles has Jan-Michael Gambill won?: Jan-Michael Gambill has not won a Grand Slam singles title.
How many Masters 1000 titles has Jan-Michael Gambill won?: TennisDB does not group any of Jan-Michael Gambill's titles under the modern Masters 1000 category.
How many ATP titles has Jan-Michael Gambill won?: Jan-Michael Gambill has won 3 ATP singles titles across all categories. The most recent was Delray Beach in 2003.
What is Jan-Michael Gambill's highest ATP ranking?: Jan-Michael Gambill's career-high ATP singles ranking is world No. 14, first achieved on June 18, 2001.
What is Jan-Michael Gambill's career win-loss record?: Jan-Michael Gambill has a career ATP singles record of 201 wins and 191 losses (51.3%).
How much career prize money has Jan-Michael Gambill earned?: Jan-Michael Gambill has earned at least $3,612,893 in career prize money from professional tennis.
What turned-professional year does TennisDB record for Jan-Michael Gambill?: TennisDB records 1996 as Jan-Michael Gambill's turned-professional year.
Which seasons of Jan-Michael Gambill's career appear in TennisDB?: Jan-Michael Gambill appears in TennisDB's ATP main-tour match records from 1995 through 2007.
On which surface does Jan-Michael Gambill have the highest recorded win rate?: Among surfaces with at least 20 recorded matches, Jan-Michael Gambill's highest ATP main-draw win rate is on hard: 55.9% (160–126).
Who has Jan-Michael Gambill faced most often?: Jan-Michael Gambill's most frequent opponent is Andre Agassi, with a head-to-head record of 2–11 across 13 meetings.