H2H data updated: 2026-09-03 00:00 UTC

Ivo Heuberger vs Julian Knowle

Compare the head-to-head record, career totals, season-by-season performance, and match log for Ivo Heuberger vs Julian Knowle.

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Ivo Heuberger
SUI Age 50 Right-Handed 188 cm / 6'2"
H2H
0 – 0
0 main draw meetings
Julian Knowle
AUT Age 52 Left-Handed 188 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Julian Knowle #170 1-6 6-3 6-4 Ivo Heuberger #130 Match data Aug 25, 2003 Q1 Q US Open Grand Slam Hard

1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. 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
Ivo Heuberger #1,496 #102 398 1,638 33 72 31.4% 0 0 0 0 0 0
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 Ivo Heuberger Julian Knowle
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 — — — — — — — 1992 0–1 0.0% #661 1,488 0 0
19 — — — — — — — 1993 0–1 0.0% #347 1,474 0 0
20 — — — — — — — 1994 0–1 0.0% #534 1,458 0 0
21 1997 1–3 25.0% #188 1,494 0 0 — — — — — — —
22 1998 6–12 33.3% #143 1,516 0 0 — — — — — — —
23 1999 1–2 33.3% #221 1,501 0 0 — — — — — — —
24 2000 1–4 20.0% #222 1,447 0 0 — — — — — — —
25 2001 6–9 40.0% #112 1,597 0 0 — — — — — — —
26 2002 6–14 30.0% #127 1,609 0 0 — — — — — — —
27 2003 3–10 23.1% #155 1,515 0 0 2001 0–2 0.0% #134 1,522 0 0
28 2004 7–14 33.3% #124 1,588 0 0 2002 4–14 22.2% #121 1,480 0 0
29 2005 2–4 33.3% #214 1,526 0 0 2003 2–6 25.0% #164 1,445 0 0
30 — — — — — — — 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 Ivo Heuberger 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 — — — — — — — — — — — — — — — — — 1992 — — — — 0 1 1 0.0% — — — — — — — —
19 — — — — — — — — — — — — — — — — — 1993 — — — — 0 1 1 0.0% — — — — — — — —
20 — — — — — — — — — — — — — — — — — 1994 — — — — 0 1 1 0.0% — — — — — — — —
21 1997 0 1 1 0.0% 0 1 1 0.0% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — —
22 1998 4 8 12 33.3% 0 2 2 0.0% 2 2 4 50.0% — — — — — — — — — — — — — — — — — — — — —
23 1999 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
24 2000 1 3 4 25.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
25 2001 5 6 11 45.5% 0 1 1 0.0% 0 1 1 0.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
26 2002 4 8 12 33.3% 0 3 3 0.0% 1 2 3 33.3% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
27 2003 3 6 9 33.3% 0 1 1 0.0% 0 2 2 0.0% 0 1 1 0.0% 2001 0 1 1 0.0% — — — — 0 1 1 0.0% — — — —
28 2004 2 6 8 25.0% 2 4 6 33.3% 1 1 2 50.0% 2 3 5 40.0% 2002 1 5 6 16.7% 0 5 5 0.0% 3 4 7 42.9% — — — —
29 2005 1 3 4 25.0% — — — — — — — — 1 1 2 50.0% 2003 1 2 3 33.3% 0 2 2 0.0% 1 2 3 33.3% — — — —
30 — — — — — — — — — — — — — — — — — 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 — 21 43 64 32.8% 2 13 15 13.3% 4 8 12 33.3% 6 8 14 42.9% — 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 92/105 of Ivo Heuberger'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 Ivo Heuberger 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%
21 1997 3/4 12.3 3.7 61.3% 70.1% 46.9% 62.1% 48.6% 61.0% 37.4% — —/— — — — — — — — — —
22 1998 14/18 5.5 5.0 54.4% 69.1% 41.7% 65.0% 35.6% 56.7% 37.1% — —/— — — — — — — — — —
23 1999 2/3 8.0 9.5 39.9% 73.3% 48.0% 51.6% 83.3% 58.2% 35.4% — —/— — — — — — — — — —
24 2000 4/5 7.3 3.3 44.7% 74.4% 44.2% 56.4% 20.2% 57.7% 33.6% — —/— — — — — — — — — —
25 2001 13/15 6.0 2.5 55.1% 72.0% 47.3% 47.1% 36.3% 60.9% 34.1% — —/— — — — — — — — — —
26 2002 17/20 7.0 2.4 49.5% 70.7% 48.0% 53.4% 54.1% 59.3% 32.5% — —/— — — — — — — — — —
27 2003 13/13 7.1 3.0 54.7% 75.3% 49.4% 47.2% 43.0% 63.0% 34.3% 2001 2/2 6.0 13.5 60.6% 67.2% 36.1% 58.6% 28.2% 54.9% 38.9%
28 2004 21/21 6.1 3.2 55.0% 71.2% 46.0% 62.4% 51.3% 59.2% 36.3% 2002 14/18 4.1 7.4 54.3% 67.4% 41.1% 58.3% 39.0% 55.6% 34.1%
29 2005 5/6 8.4 1.8 56.6% 75.3% 50.4% 69.3% 25.0% 64.0% 37.1% 2003 8/8 1.6 5.0 54.9% 70.3% 44.2% 43.7% 42.8% 58.4% 32.7%
30 — —/— — — — — — — — — — 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 — 92/105 6.7 3.3 53.4% 71.9% 46.6% 56.7% 44.0% 59.8% 35.1% — 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 Ivo Heuberger 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 — — — — — — — — — — — — — — — — 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 — — — — — — — — — — — — — — — — 1994 1459 96.5 -1.49 -3.51 0.707 42.7% — — — 0.0% -3.50 — — — +0.09
21 1997 1495 110.8 -0.34 -0.05 0.958 49.0% +40 — — 33.3% -1.11 0–1 1–0 — +0.09 — — — — — — — — — — — — — — — —
22 1998 1517 123.2 -2.63 +0.15 0.858 47.3% +24 — +121 42.5% -0.78 0–4 (0%) 2–1 (67%) — -0.39 — — — — — — — — — — — — — — — —
23 1999 1502 100.0 -0.07 -1.10 0.846 47.3% +25 — — 28.6% -0.71 0–1 0–1 — +0.45 — — — — — — — — — — — — — — — —
24 2000 1448 106.4 -1.72 -0.96 0.794 46.2% +23 — — 33.3% -0.58 0–2 1–2 (33%) — +0.39 — — — — — — — — — — — — — — — —
25 2001 1598 116.0 -0.81 -1.31 0.872 47.2% -11 — — 35.3% -0.97 1–1 2–2 (50%) — +0.07 — — — — — — — — — — — — — — — —
26 2002 1609 126.6 -1.20 -2.63 0.799 46.2% +21 -193 -13 36.7% -1.04 3–4 (43%) 5–3 (63%) — -0.83 2000 1465 103.0 — — — — — — — — — — — — —
27 2003 1515 111.5 -0.36 -1.37 0.927 48.9% +14 — — 30.0% -1.17 1–1 0–5 (0%) — +0.46 2001 1523 109.5 -1.41 +1.80 0.863 46.6% — — — 25.0% -1.75 — — — -0.07
28 2004 1588 124.4 -1.89 -0.40 0.889 48.4% -18 -149 — 39.6% -0.35 0–3 (0%) 1–3 (25%) — +0.07 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%) — -0.12
29 2005 1526 99.8 -0.58 +0.36 1.031 49.9% +7 — — 36.4% -1.18 1–0 1–1 — +0.74 2003 1445 96.5 -1.71 -3.80 0.786 46.1% +49 — +120 38.9% -0.89 0–2 — — +0.53
30 2006 1504 100.0 — — — — — — — — — — — — — 2004 1519 117.6 -1.78 -0.14 0.895 48.0% -24 -116 — 39.1% -0.57 1–2 (33%) — — -0.14
31 — — — — — — — — — — — — — — — — 2005 1500 101.8 +0.54 -0.30 0.607 44.6% — — — 0.0% -1.50 — 0–1 — -0.20
32 2008 1488 97.2 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
33 — — — — — — — — — — — — — — — — 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 — 1638 121.5 -1.34 -0.98 0.874 47.7% +9 -164 +64 36.7% -0.84 6–17 (26%) 13–18 (42%) 87.9 +1.01 — 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.