H2H data updated: 2026-09-07 00:00 UTC

Stefan Koubek vs Victor Ionita H2H: 1-0

Stefan Koubek holds a 1–0 lead over Victor Ionita in their ATP head-to-head. Across 1 main-draw meeting, Stefan Koubek leads 1–0 on clay. Most recently, Stefan Koubek won the 2004 Tiriac Open round of 32 6-3 7-6(3).

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Stefan Koubek
AUT Age 49 Left-Handed 175 cm / 5'9"
H2H
1 – 0
1 main-draw meetings
Victor Ionita
ROU Age 43 Right-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Stefan Koubek #82 6-3 7-6(3) Victor Ionita #221 Match data Sep 16, 2004* R32 Tiriac Open International Series → modern equivalent ATP 250 Clay

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
Stefan Koubek #906 #20 1,143 1,796 195 235 45.3% 0 0 0 0 3 3
Victor Ionita #1,646 #187 270 1,500 0 3 0.0% 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 Stefan Koubek Victor Ionita
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 1994 0–1 0.0% #1219 1,485 0 0 — — — — — — —
19 1996 1–2 33.3% #311 1,482 0 0 — — — — — — —
20 1997 4–2 66.7% #125 1,543 0 0 — — — — — — —
21 1998 2–4 33.3% #93 1,533 0 0 2004 0–1 0.0% #225 1,491 0 0
22 1999 29–25 53.7% #46 1,681 0 1 2005 0–1 0.0% #309 1,451 0 0
23 2000 26–27 49.1% #54 1,625 0 2 2006 0–1 0.0% #254 1,444 0 0
24 2001 20–22 47.6% #63 1,697 0 2 — — — — — — —
25 2002 18–31 36.7% #54 1,578 0 2 — — — — — — —
26 2003 19–24 44.2% #53 1,648 0 3 — — — — — — —
27 2004 22–24 47.8% #60 1,757 0 3 — — — — — — —
28 2005 6–15 28.6% #182 1,570 0 3 — — — — — — —
29 2006 14–9 60.9% #80 1,693 0 3 — — — — — — —
30 2007 22–26 45.8% #47 1,762 0 3 — — — — — — —
31 2008 3–6 33.3% #192 1,704 0 3 — — — — — — —
32 2009 6–11 35.3% #135 1,638 0 3 — — — — — — —
33 2010 3–5 37.5% #131 1,632 0 3 — — — — — — —
34 2011 0–1 0.0% #647 1,602 0 3 — — — — — — —

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 Stefan Koubek Victor Ionita
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 %
17 1994 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
19 1996 — — — — 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — — — — — —
20 1997 1 1 2 50.0% 3 1 4 75.0% — — — — — — — — — — — — — — — — — — — — — — — — —
21 1998 0 2 2 0.0% 2 2 4 50.0% — — — — — — — — 2004 — — — — 0 1 1 0.0% — — — — — — — —
22 1999 2 7 9 22.2% 25 13 38 65.8% 0 1 1 0.0% 2 4 6 33.3% 2005 — — — — 0 1 1 0.0% — — — — — — — —
23 2000 18 14 32 56.3% 7 10 17 41.2% 1 2 3 33.3% 0 1 1 0.0% 2006 — — — — 0 1 1 0.0% — — — — — — — —
24 2001 12 13 25 48.0% 8 7 15 53.3% 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — —
25 2002 8 17 25 32.0% 7 9 16 43.8% 3 3 6 50.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
26 2003 9 11 20 45.0% 6 9 15 40.0% 2 3 5 40.0% 2 1 3 66.7% — — — — — — — — — — — — — — — — —
27 2004 8 10 18 44.4% 10 11 21 47.6% 1 2 3 33.3% 3 1 4 75.0% — — — — — — — — — — — — — — — — —
28 2005 3 7 10 30.0% 3 7 10 30.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
29 2006 6 4 10 60.0% 4 4 8 50.0% — — — — 4 1 5 80.0% — — — — — — — — — — — — — — — — —
30 2007 15 15 30 50.0% 6 8 14 42.9% 0 2 2 0.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
31 2008 3 6 9 33.3% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
32 2009 4 5 9 44.4% 1 4 5 20.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
33 2010 3 3 6 50.0% 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
34 2011 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 92 116 208 44.2% 83 89 172 48.3% 8 19 27 29.6% 12 11 23 52.2% — — — — — 0 3 3 0.0% — — — — — — — —

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 390/430 of Stefan Koubek's and 3/3 of Victor Ionita'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 Stefan Koubek Victor Ionita
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%
17 1994 1/1 0.0 1.0 76.1% 45.7% 18.2% 0.0% 28.6% 39.1% 37.7% — —/— — — — — — — — — —
19 1996 3/3 1.0 3.7 66.3% 48.8% 38.8% 48.3% 43.4% 45.6% 39.8% — —/— — — — — — — — — —
20 1997 5/6 3.2 3.2 61.8% 61.8% 57.4% 46.6% 51.3% 60.1% 47.7% — —/— — — — — — — — — —
21 1998 6/6 2.8 3.0 61.9% 64.4% 44.5% 49.8% 42.8% 56.9% 37.5% 2004 1/1 2.0 2.0 54.9% 44.4% 54.1% 50.0% 50.0% 48.8% 46.3%
22 1999 46/54 2.6 2.3 58.6% 66.4% 52.1% 56.8% 40.4% 60.8% 39.5% 2005 1/1 1.0 4.0 53.7% 36.4% 31.6% 33.3% 40.0% 34.1% 41.2%
23 2000 38/53 4.2 3.9 59.6% 67.7% 49.6% 52.4% 40.4% 60.2% 37.0% 2006 1/1 2.0 1.0 68.3% 58.1% 50.0% 55.6% 50.0% 55.6% 37.3%
24 2001 38/42 3.5 3.4 58.2% 66.1% 50.6% 58.1% 43.5% 59.4% 36.3% — —/— — — — — — — — — —
25 2002 39/49 3.5 3.7 58.9% 65.2% 48.6% 48.7% 40.1% 58.3% 37.2% — —/— — — — — — — — — —
26 2003 43/43 2.7 2.8 60.0% 65.0% 51.0% 58.8% 39.9% 59.5% 38.5% — —/— — — — — — — — — —
27 2004 45/46 3.6 3.0 63.1% 65.9% 50.1% 55.2% 39.2% 60.1% 37.6% — —/— — — — — — — — — —
28 2005 21/21 4.3 3.7 60.1% 63.6% 48.3% 56.0% 42.7% 57.4% 36.9% — —/— — — — — — — — — —
29 2006 22/23 3.5 3.3 55.8% 68.2% 51.8% 58.7% 40.8% 60.7% 39.0% — —/— — — — — — — — — —
30 2007 48/48 4.0 2.7 59.2% 67.9% 52.4% 56.6% 46.6% 61.4% 37.4% — —/— — — — — — — — — —
31 2008 9/9 4.6 3.6 58.6% 65.0% 42.6% 46.4% 40.7% 55.7% 34.1% — —/— — — — — — — — — —
32 2009 17/17 3.8 3.1 54.3% 70.4% 50.5% 42.5% 38.1% 60.9% 36.2% — —/— — — — — — — — — —
33 2010 8/8 4.8 3.3 60.6% 61.5% 48.0% 42.1% 41.7% 56.6% 37.6% — —/— — — — — — — — — —
34 2011 1/1 0.0 2.0 74.0% 51.4% 30.8% 16.7% 100.0% 46.0% 30.2% — —/— — — — — — — — — —
Career — 390/430 3.5 3.1 59.5% 66.0% 50.2% 54.1% 41.6% 59.6% 37.7% — 3/3 1.7 2.3 58.9% 46.3% 45.2% 46.3% 46.7% 46.2% 41.6%

Advanced Statistics Comparison by Age

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 Stefan Koubek Victor Ionita
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
17 1994 1485 97.3 +0.16 -0.91 0.620 38.4% — — — 0.0% -3.50 — — — +0.13 — — — — — — — — — — — — — — — —
19 1996 1482 96.6 -2.52 -2.52 0.731 43.0% — +24 — 28.6% -1.86 1–0 — — +0.08 — — — — — — — — — — — — — — — —
20 1997 1543 118.6 -0.10 +1.82 1.193 53.2% — +48 — 62.5% +1.00 2–2 (50%) 1–1 — +0.15 — — — — — — — — — — — — — — — —
21 1998 1533 108.9 -0.90 -0.95 0.869 47.6% — +69 — 33.3% -0.80 2–1 (67%) 2–1 (67%) — +0.21 2004 1492 101.7 -0.80 -1.55 0.905 47.6% — — — 0.0% -2.00 — 0–1 — -0.08
22 1999 1681 136.8 -0.61 +1.04 1.009 50.2% -157 +114 — 51.6% +0.05 5–5 (50%) 7–7 (50%) 100.7 -0.19 2005 1452 95.0 -1.10 -1.65 0.625 38.0% — — — 0.0% -4.00 — — — +0.01
23 2000 1625 128.0 -1.07 -0.50 0.930 48.8% +9 +46 -98 48.5% -0.25 9–8 (53%) 10–10 (50%) 102.0 +1.65 2006 1444 102.4 +0.42 -1.61 0.839 46.7% — — — 0.0% -2.00 — — — -0.06
24 2001 1698 130.5 -1.96 -0.75 0.896 48.3% -36 -2 — 45.3% -0.31 9–7 (56%) 9–4 (69%) 107.7 -0.37 2007 1413 91.2 — — — — — — — — — — — — —
25 2002 1578 131.6 -3.16 -0.15 0.892 47.7% -9 +101 -81 40.5% -0.74 5–8 (38%) 12–7 (63%) 102.3 -0.55 2008 1425 104.6 — — — — — — — — — — — — —
26 2003 1648 134.0 -1.86 +1.04 0.952 49.2% -22 0 -152 46.3% -0.27 4–8 (33%) 9–2 (82%) 102.4 -1.35 2009 1412 95.6 — — — — — — — — — — — — —
27 2004 1757 132.2 -2.49 +0.57 0.941 48.8% -16 -76 -256 45.5% -0.22 11–2 (85%) 9–7 (56%) 114.2 -1.10 — — — — — — — — — — — — — — — —
28 2005 1570 110.6 -3.42 -1.33 0.865 47.6% +70 +14 — 35.8% -0.96 1–6 (14%) 3–4 (43%) 94.3 +0.80 2011 1399 98.3 — — — — — — — — — — — — —
29 2006 1694 126.5 -1.41 +1.06 0.991 49.7% +45 -95 — 51.7% -0.05 9–2 (82%) 6–2 (75%) 112.1 +0.80 — — — — — — — — — — — — — — — —
30 2007 1763 141.7 -1.17 +0.49 0.969 49.6% +25 -117 — 47.8% -0.16 8–9 (47%) 9–7 (56%) 103.2 -0.82 — — — — — — — — — — — — — — — —
31 2008 1704 118.9 -4.34 -0.28 0.769 45.0% +16 — — 42.3% -0.69 1–2 (33%) 4–2 (67%) 99.7 -0.40 — — — — — — — — — — — — — — — —
32 2009 1639 122.2 -1.09 -0.53 0.926 48.9% +44 -39 -164 41.3% -0.28 1–3 (25%) 1–6 (14%) 93.5 -0.24 — — — — — — — — — — — — — — — —
33 2010 1633 125.7 -2.71 +0.54 0.867 46.8% +123 — — 47.6% +0.09 1–1 2–3 (40%) — +0.03 — — — — — — — — — — — — — — — —
34 2011 1603 113.9 -0.31 -0.24 0.560 38.7% — — — 0.0% -3.50 — — — -0.19 — — — — — — — — — — — — — — — —
Career — 1796 135.7 -1.82 +0.18 0.932 48.8% -3 +19 -140 45.7% -0.31 69–64 (52%) 84–63 (57%) 111.6 -0.32 — 1500 95.5 -0.49 -1.60 0.773 44.1% — — — 0.0% -2.67 — 0–1 — -4.33

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.