H2H data updated: 2026-09-04 00:00 UTC

Jan-Michael Gambill vs Julian Knowle H2H: 1-0

Jan-Michael Gambill holds a 1–0 lead over Julian Knowle in their ATP head-to-head. Across 1 main-draw meeting, Jan-Michael Gambill leads 1–0 on hard courts. Most recently, Jan-Michael Gambill won the 2002 US Open round of 128 6-1 2-1 RET.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Jan-Michael Gambill
USA Age 49 Right-Handed 190 cm / 6'3"
H2H
1 – 0
1 main draw meetings
Julian Knowle
AUT Age 52 Left-Handed 188 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jan-Michael Gambill #57 6-1 2-1 (ret.) Julian Knowle #91 Match data Aug 28, 2002* R128 US Open Grand Slam Hard

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
Jan-Michael Gambill #1,352 #14 1,655 1,949 201 191 51.3% 0 0 0 0 3 3
Julian Knowle #948 #86 455 1,552 9 33 21.4% 0 0 0 0 0 0

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 Jan-Michael Gambill Julian Knowle
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 1995 0–1 0.0% — 1,487 0 0 1992 0–1 0.0% #661 1,488 0 0
19 — — — — — — — 1993 0–1 0.0% #347 1,474 0 0
20 1997 3–5 37.5% #186 1,520 0 0 1994 0–1 0.0% #534 1,458 0 0
21 1998 31–23 57.4% #38 1,754 0 0 — — — — — — —
22 1999 25–25 50.0% #58 1,762 0 1 — — — — — — —
23 2000 33–26 55.9% #33 1,818 0 1 — — — — — — —
24 2001 35–22 61.4% #21 1,759 0 2 — — — — — — —
25 2002 28–26 51.9% #42 1,756 0 2 — — — — — — —
26 2003 22–25 46.8% #51 1,643 0 3 — — — — — — —
27 2004 18–25 41.9% #95 1,595 0 3 2001 0–2 0.0% #134 1,522 0 0
28 2005 5–10 33.3% #191 1,558 0 3 2002 4–14 22.2% #121 1,480 0 0
29 2006 1–1 50.0% #687 1,568 0 3 2003 2–6 25.0% #164 1,445 0 0
30 2007 0–2 0.0% #1107 1,504 0 3 2004 3–6 33.3% #257 1,519 0 0
31 — — — — — — — 2005 0–1 0.0% #636 1,499 0 0
38 — — — — — — — 2012 0–1 0.0% #892 1,523 0 0

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 Jan-Michael Gambill Julian Knowle
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
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 %
18 1995 0 1 1 0.0% — — — — — — — — — — — — 1992 — — — — 0 1 1 0.0% — — — — — — — —
19 — — — — — — — — — — — — — — — — — 1993 — — — — 0 1 1 0.0% — — — — — — — —
20 1997 3 4 7 42.9% 0 1 1 0.0% — — — — — — — — 1994 — — — — 0 1 1 0.0% — — — — — — — —
21 1998 23 13 36 63.9% 3 4 7 42.9% 2 3 5 40.0% 3 3 6 50.0% — — — — — — — — — — — — — — — — —
22 1999 20 15 35 57.1% 1 5 6 16.7% 3 3 6 50.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
23 2000 20 17 37 54.1% 3 4 7 42.9% 8 3 11 72.7% 2 2 4 50.0% — — — — — — — — — — — — — — — — —
24 2001 29 13 42 69.0% 2 4 6 33.3% 2 3 5 40.0% 2 2 4 50.0% — — — — — — — — — — — — — — — — —
25 2002 24 16 40 60.0% 1 5 6 16.7% 3 2 5 60.0% 0 3 3 0.0% — — — — — — — — — — — — — — — — —
26 2003 20 17 37 54.1% 0 5 5 0.0% 2 3 5 40.0% — — — — — — — — — — — — — — — — — — — — —
27 2004 15 18 33 45.5% 0 3 3 0.0% 3 4 7 42.9% — — — — 2001 0 1 1 0.0% — — — — 0 1 1 0.0% — — — —
28 2005 5 10 15 33.3% — — — — — — — — — — — — 2002 1 5 6 16.7% 0 5 5 0.0% 3 4 7 42.9% — — — —
29 2006 1 1 2 50.0% — — — — — — — — — — — — 2003 1 2 3 33.3% 0 2 2 0.0% 1 2 3 33.3% — — — —
30 2007 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — 2004 1 3 4 25.0% 2 2 4 50.0% 0 1 1 0.0% — — — —
31 — — — — — — — — — — — — — — — — — 2005 0 1 1 0.0% — — — — — — — — — — — —
38 — — — — — — — — — — — — — — — — — 2012 0 1 1 0.0% — — — — — — — — — — — —
Career — 160 126 286 55.9% 10 32 42 23.8% 23 21 44 52.3% 8 12 20 40.0% — 3 13 16 18.8% 2 12 14 14.3% 4 8 12 33.3% — — — —

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 105/109 of Jan-Michael Gambill's and 37/41 of Julian Knowle's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.

Age Jan-Michael Gambill Julian Knowle
Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts% Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts%
19 — —/— — — — — — — — — — 1993 1/1 3.0 8.0 55.4% 53.7% 45.5% 60.0% 12.5% 50.0% 36.8%
20 — —/— — — — — — — — — — 1994 1/1 3.0 1.0 50.8% 53.1% 41.9% 28.6% 40.0% 47.6% 37.0%
26 2003 43/47 10.1 3.1 56.5% 75.0% 47.9% 60.7% 48.3% 63.4% 36.0% — —/— — — — — — — — — —
27 2004 43/43 11.7 3.1 59.1% 76.0% 47.7% 57.9% 38.7% 64.3% 34.3% 2001 2/2 6.0 13.5 60.6% 67.2% 36.1% 58.6% 28.2% 54.9% 38.9%
28 2005 15/15 12.3 3.9 56.6% 76.7% 45.9% 58.6% 27.7% 63.3% 32.1% 2002 14/18 4.1 7.4 54.3% 67.4% 41.1% 58.3% 39.0% 55.6% 34.1%
29 2006 2/2 11.5 7.0 47.8% 73.2% 44.1% 59.7% 35.0% 57.0% 39.4% 2003 8/8 1.6 5.0 54.9% 70.3% 44.2% 43.7% 42.8% 58.4% 32.7%
30 2007 2/2 9.5 5.5 58.7% 79.4% 39.2% 37.5% 20.8% 62.8% 26.7% 2004 9/9 2.9 5.0 61.2% 65.7% 47.2% 55.8% 35.6% 58.5% 37.1%
31 — —/— — — — — — — — — — 2005 1/1 4.0 3.0 61.4% 72.1% 51.9% 50.0% 100.0% 64.3% 21.7%
38 — —/— — — — — — — — — — 2012 1/1 6.0 0.0 69.6% 59.0% 29.4% 42.9% 50.0% 50.0% 26.1%
Career — 105/392 11.1 3.4 57.5% 75.7% 47.3% 58.8% 40.7% 63.6% 34.6% — 37/42 3.4 6.1 57.0% 66.7% 43.1% 53.2% 39.7% 56.6% 34.4%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. 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 Jan-Michael Gambill Julian Knowle
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
18 1995 1487 99.7 — — — — — — — 0.0% -3.00 — — — +0.04 1992 1488 99.5 — — — — — — — 33.3% -0.33 0–1 0–1 — -0.06
19 — — — — — — — — — — — — — — — — 1993 1475 98.5 -2.13 -0.61 0.735 43.7% — — — 0.0% -2.50 — — — -0.05
20 1997 1520 116.3 — — — — +18 — — 33.3% -1.17 1–0 3–1 (75%) — -0.59 1994 1459 96.5 -1.49 -3.51 0.707 42.7% — — — 0.0% -3.50 — — — +0.09
21 1998 1755 144.7 — — — — +27 -222 -139 53.4% +0.32 13–4 (76%) 11–12 (48%) 111.1 +0.72 — — — — — — — — — — — — — — — —
22 1999 1763 145.0 — — — — +37 -263 -154 51.2% +0.26 8–11 (42%) 10–9 (53%) 102.4 -2.53 — — — — — — — — — — — — — — — —
23 2000 1819 143.8 — — — — -27 -296 -44 56.3% +0.60 10–10 (50%) 10–17 (37%) 96.8 -1.79 — — — — — — — — — — — — — — — —
24 2001 1759 150.9 — — — — +67 -256 -39 61.9% +0.81 8–6 (57%) 11–10 (52%) 99.4 +0.99 — — — — — — — — — — — — — — — —
25 2002 1756 148.6 — — — — +48 -275 -49 51.9% +0.44 11–10 (52%) 11–14 (44%) 92.3 -0.54 — — — — — — — — — — — — — — — —
26 2003 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 2000 1465 103.0 — — — — — — — — — — — — —
27 2004 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 2001 1523 109.5 -1.41 +1.80 0.863 46.6% — — — 25.0% -1.75 — — — -0.07
28 2005 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 2002 1480 101.9 -4.32 -2.26 0.768 45.0% +5 -109 +141 31.1% -1.27 2–3 (40%) 1–4 (20%) 95.6 -0.12
29 2006 1569 105.0 -1.55 +1.41 0.916 48.6% — — — 40.0% -0.60 1–0 — — +0.02 2003 1445 96.5 -1.71 -3.80 0.786 46.1% +49 — +120 38.9% -0.89 0–2 — — +0.53
30 2007 1505 103.5 -0.27 -2.33 0.719 44.4% — — — 0.0% -1.75 — 0–1 — +0.01 2004 1519 117.6 -1.78 -0.14 0.895 48.0% -24 -116 — 39.1% -0.57 1–2 (33%) — — -0.14
31 2008 1506 100.9 — — — — — — — — — — — — — 2005 1500 101.8 +0.54 -0.30 0.607 44.6% — — — 0.0% -1.50 — 0–1 — -0.20
33 2010 1508 103.1 — — — — — — — — — — — — — 2007 1484 100.3 — — — — — — — — — — — — —
35 — — — — — — — — — — — — — — — — 2009 1500 100.7 — — — — — — — — — — — — —
38 — — — — — — — — — — — — — — — — 2012 1523 102.8 +0.26 -3.01 0.522 39.2% — — — 0.0% -3.50 — — — -0.02
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 — 1552 107.2 -2.59 -1.81 0.792 45.8% +6 -112 +135 31.7% -1.15 3–8 (27%) 1–6 (14%) 92.0 -0.10

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.