H2H data updated: 2026-09-12 00:00 UTC

Younes El Aynaoui vs Nicolas Kiefer H2H: 1-0

Younes El Aynaoui holds a 1–0 lead over Nicolas Kiefer in their ATP head-to-head. Across 1 main-draw meeting, Younes El Aynaoui leads 1–0 on hard courts. Most recently, Younes El Aynaoui won the 2002 Canadian Open round of 64 6-4 2-6 6-4.

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Younes El Aynaoui
MAR Age 55 Right-Handed 193 cm / 6'4"
H2H
1 – 0
1 main-draw meetings
Nicolas Kiefer
GER Age 49 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Younes El Aynaoui #18 6-4 2-6 6-4 Nicolas Kiefer #58 Match data Jul 31, 2002* R64 Canadian Open Masters 1000 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
Younes El Aynaoui #1,592 #14 1,635 1,923 244 221 52.5% 0 0 0 0 5 5
Nicolas Kiefer #720 #4 2,447 1,995 347 255 57.6% 0 0 0 1 5 6

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 Younes El Aynaoui Nicolas Kiefer
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1994 0–1 0.0% — 1,489 0 0
17 — — — — — — — 1995 3–3 50.0% #206 1,527 0 0
18 1990 0–1 0.0% #351 1,491 0 0 1996 7–9 43.8% #128 1,563 0 0
19 — — — — — — — 1997 26–16 61.9% #32 1,799 0 1
20 1992 3–2 60.0% #311 1,532 0 0 1998 31–25 55.4% #35 1,792 0 1
21 1993 16–14 53.3% #51 1,636 0 0 1999 53–21 71.6% #6 1,922 0 4
22 1994 15–27 35.7% #117 1,516 0 0 2000 30–16 65.2% #20 1,900 0 6
23 1995 4–5 44.4% #110 1,562 0 0 2001 26–25 51.0% #42 1,763 0 6
24 1996 15–22 40.5% #70 1,568 0 0 2002 19–24 44.2% #72 1,717 0 6
25 1997 2–2 50.0% #237 1,581 0 0 2003 19–17 52.8% #58 1,727 0 6
26 1998 5–2 71.4% #45 1,663 0 0 2004 34–20 63.0% #21 1,886 0 6
27 1999 27–23 54.0% #33 1,720 0 1 2005 31–22 58.5% #22 1,862 0 6
28 2000 36–26 58.1% #25 1,717 0 1 2006 14–8 63.6% #48 1,863 0 6
29 2001 31–23 57.4% #38 1,823 0 2 2007 19–12 61.3% #49 1,906 0 6
30 2002 42–25 62.7% #22 1,773 0 5 2008 22–17 56.4% #38 1,889 0 6
31 2003 38–26 59.4% #14 1,835 0 5 2009 12–16 42.9% #116 1,762 0 6
32 2004 0–5 0.0% #644 1,730 0 5 2010 1–3 25.0% #722 1,722 0 6
33 2005 1–10 9.1% #228 1,592 0 5 — — — — — — —
34 2006 2–2 50.0% #189 1,607 0 5 — — — — — — —
35 2007 1–3 25.0% #167 1,615 0 5 — — — — — — —
36 2008 5–2 71.4% #201 1,698 0 5 — — — — — — —
38 2010 1–1 50.0% #720 1,689 0 5 — — — — — — —

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 Younes El Aynaoui Nicolas Kiefer
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 %
16 — — — — — — — — — — — — — — — — — 1994 — — — — — — — — — — — — 0 1 1 0.0%
17 — — — — — — — — — — — — — — — — — 1995 — — — — — — — — — — — — 3 3 6 50.0%
18 1990 — — — — 0 1 1 0.0% — — — — — — — — 1996 1 2 3 33.3% 3 4 7 42.9% 1 1 2 50.0% 2 2 4 50.0%
19 — — — — — — — — — — — — — — — — — 1997 7 5 12 58.3% 3 4 7 42.9% 5 2 7 71.4% 11 5 16 68.8%
20 1992 — — — — 3 2 5 60.0% — — — — — — — — 1998 24 15 39 61.5% 4 4 8 50.0% 2 3 5 40.0% 1 3 4 25.0%
21 1993 3 5 8 37.5% 13 7 20 65.0% — — — — 0 2 2 0.0% 1999 41 15 56 73.2% 2 2 4 50.0% 6 1 7 85.7% 4 3 7 57.1%
22 1994 7 7 14 50.0% 8 17 25 32.0% 0 1 1 0.0% 0 2 2 0.0% 2000 27 11 38 71.1% 1 3 4 25.0% 2 2 4 50.0% — — — —
23 1995 1 3 4 25.0% 3 2 5 60.0% — — — — — — — — 2001 11 13 24 45.8% 6 6 12 50.0% 4 2 6 66.7% 5 4 9 55.6%
24 1996 9 10 19 47.4% 5 10 15 33.3% 0 1 1 0.0% 1 1 2 50.0% 2002 10 15 25 40.0% 1 5 6 16.7% 7 3 10 70.0% 1 1 2 50.0%
25 1997 0 1 1 0.0% 2 1 3 66.7% — — — — — — — — 2003 14 11 25 56.0% 1 3 4 25.0% 4 3 7 57.1% — — — —
26 1998 — — — — 5 2 7 71.4% — — — — — — — — 2004 30 14 44 68.2% 2 4 6 33.3% 2 2 4 50.0% — — — —
27 1999 4 6 10 40.0% 21 14 35 60.0% 1 1 2 50.0% 1 2 3 33.3% 2005 15 13 28 53.6% 6 4 10 60.0% 2 2 4 50.0% 8 3 11 72.7%
28 2000 15 12 27 55.6% 18 11 29 62.1% 2 1 3 66.7% 1 2 3 33.3% 2006 8 4 12 66.7% 6 4 10 60.0% — — — — — — — —
29 2001 5 9 14 35.7% 20 12 32 62.5% 2 1 3 66.7% 4 1 5 80.0% 2007 17 9 26 65.4% — — — — 2 3 5 40.0% — — — —
30 2002 18 12 30 60.0% 22 7 29 75.9% 0 2 2 0.0% 2 4 6 33.3% 2008 12 11 23 52.2% 5 4 9 55.6% 5 2 7 71.4% — — — —
31 2003 23 12 35 65.7% 10 9 19 52.6% 5 3 8 62.5% 0 2 2 0.0% 2009 4 7 11 36.4% 7 7 14 50.0% 1 2 3 33.3% — — — —
32 2004 0 5 5 0.0% — — — — — — — — — — — — 2010 — — — — 0 1 1 0.0% 1 2 3 33.3% — — — —
33 2005 1 6 7 14.3% 0 4 4 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
34 2006 2 2 4 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
35 2007 1 2 3 33.3% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
36 2008 — — — — 5 2 7 71.4% — — — — — — — — — — — — — — — — — — — — — — — — —
38 2010 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 90 93 183 49.2% 135 102 237 57.0% 10 10 20 50.0% 9 16 25 36.0% — 221 145 366 60.4% 47 55 102 46.1% 44 30 74 59.5% 35 25 60 58.3%

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 88/97 of Younes El Aynaoui's and 537/601 of Nicolas Kiefer'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 Younes El Aynaoui Nicolas Kiefer
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 — —/— — — — — — — — — — 1995 6/6 4.7 2.3 61.5% 72.6% 51.3% 62.7% 44.1% 64.8% 36.3%
18 — —/— — — — — — — — — — 1996 11/16 6.1 2.5 52.2% 76.6% 47.8% 53.2% 49.7% 62.7% 39.8%
19 — —/— — — — — — — — — — 1997 37/42 7.9 3.5 55.2% 77.0% 48.3% 60.5% 52.5% 64.1% 36.7%
20 — —/— — — — — — — — — — 1998 49/56 6.2 4.7 53.7% 74.8% 47.8% 55.1% 44.4% 62.5% 39.0%
21 — —/— — — — — — — — — — 1999 56/74 6.6 4.3 51.5% 75.7% 53.2% 61.8% 43.5% 64.7% 40.4%
22 — —/— — — — — — — — — — 2000 38/46 6.4 4.3 52.7% 74.9% 52.3% 61.7% 48.3% 64.3% 40.1%
23 — —/— — — — — — — — — — 2001 44/51 6.3 4.1 50.3% 71.1% 48.8% 54.0% 50.7% 60.0% 40.0%
24 — —/— — — — — — — — — — 2002 40/43 6.2 4.5 52.6% 74.1% 47.8% 58.8% 50.7% 61.5% 37.6%
25 — —/— — — — — — — — — — 2003 36/36 6.5 3.8 50.8% 73.1% 49.9% 58.1% 44.7% 61.8% 37.4%
26 — —/— — — — — — — — — — 2004 51/54 7.3 3.8 54.9% 77.8% 48.4% 61.1% 41.4% 64.5% 38.7%
27 — —/— — — — — — — — — — 2005 52/53 7.6 3.8 53.4% 74.2% 51.4% 56.4% 51.3% 63.6% 40.9%
28 — —/— — — — — — — — — — 2006 21/22 7.4 4.0 51.7% 72.0% 50.1% 59.5% 43.3% 61.3% 40.2%
29 — —/— — — — — — — — — — 2007 30/31 6.7 2.5 57.0% 79.9% 51.6% 64.6% 33.9% 67.8% 38.1%
30 — —/— — — — — — — — — — 2008 34/39 7.2 2.4 53.6% 76.3% 51.9% 55.4% 44.9% 64.9% 39.6%
31 2003 58/64 10.7 2.9 65.7% 75.4% 50.8% 67.6% 41.2% 66.9% 35.2% 2009 28/28 7.7 3.9 52.0% 75.0% 47.3% 62.9% 45.8% 61.9% 35.4%
32 2004 4/5 1.0 3.3 64.2% 48.9% 32.0% 46.9% 0.0% 42.4% 21.1% 2010 4/4 11.3 6.5 51.8% 77.7% 47.3% 55.7% 31.0% 63.0% 28.6%
33 2005 11/11 2.4 3.5 61.8% 60.7% 40.1% 48.9% 25.2% 52.9% 31.7% — —/— — — — — — — — — —
34 2006 3/4 5.7 2.0 56.4% 78.3% 53.6% 57.8% 33.0% 67.0% 39.6% — —/— — — — — — — — — —
35 2007 4/4 5.0 1.8 67.9% 69.5% 44.5% 53.4% 35.1% 62.0% 30.9% — —/— — — — — — — — — —
36 2008 6/7 9.5 2.7 64.0% 77.9% 48.6% 64.3% 58.3% 67.4% 36.7% — —/— — — — — — — — — —
38 2010 2/2 8.0 3.0 59.3% 78.4% 40.6% 58.3% 12.5% 62.9% 30.8% — —/— — — — — — — — — —
Career — 88/465 8.6 2.9 64.7% 72.4% 48.0% 62.9% 37.3% 63.8% 34.1% — 537/602 6.9 3.8 53.1% 75.1% 49.9% 58.9% 46.0% 63.3% 38.9%

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 Younes El Aynaoui Nicolas Kiefer
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
16 — — — — — — — — — — — — — — — — 1994 1489 97.0 — — — — — — — 0.0% -4.00 — — — +0.05
17 — — — — — — — — — — — — — — — — 1995 1528 117.0 +1.19 -1.22 1.032 51.3% +26 — — 50.0% 0.00 1–1 — — +0.08
18 1990 1492 103.5 — — — — — — — 0.0% -2.50 — 0–1 — -0.05 1996 1563 122.9 +0.33 +1.12 1.067 50.9% +8 -24 — 44.1% +0.09 0–1 2–3 (40%) — +0.80
19 — — — — — — — — — — — — — — — — 1997 1799 139.8 +1.52 -0.54 1.021 50.8% -25 -229 -48 55.6% +0.30 14–3 (82%) 8–7 (53%) 112.8 +0.64
20 1992 1532 116.8 — — — — — +42 — 60.0% +0.47 2–1 (67%) — — +0.45 1998 1792 151.1 +0.77 +1.69 1.039 50.9% +29 -161 -60 55.6% +0.37 10–11 (48%) 12–8 (60%) 100.3 -0.30
21 1993 1637 136.8 — — — — -93 +76 — 51.4% +0.19 8–6 (57%) 6–8 (43%) 100.3 +0.77 1999 1923 157.7 +2.57 +3.33 1.144 52.6% +23 -302 -126 65.4% +0.99 15–6 (71%) 16–8 (67%) 110.9 +0.49
22 1994 1517 125.5 — — — — +44 +45 — 37.8% -0.75 3–9 (25%) 7–9 (44%) 94.7 +1.14 2000 1900 146.0 +2.09 +2.25 1.124 52.3% +54 -332 -120 61.3% +0.85 9–2 (82%) 7–6 (54%) 104.4 -0.03
23 1995 1562 110.8 — — — — -30 +67 — 48.0% -0.32 1–0 2–1 (67%) — +1.06 2001 1763 149.2 -1.17 +2.22 1.001 50.2% +25 -132 +43 53.5% +0.24 6–10 (38%) 7–5 (58%) 97.2 -2.55
24 1996 1569 135.0 — — — — +36 +10 — 46.3% -0.22 6–6 (50%) 6–9 (40%) 103.7 -0.66 2002 1718 142.5 -0.77 +1.14 0.977 49.8% +5 -139 +119 46.5% -0.05 4–4 (50%) 4–7 (36%) 98.4 -0.90
25 1997 1582 114.0 — — — — — +36 — 50.0% -0.25 — 2–0 — +0.10 2003 1727 134.5 +0.10 +0.13 0.980 49.8% +22 -144 +93 48.1% -0.22 6–1 (86%) 3–3 (50%) 106.1 +0.36
26 1998 1664 129.0 — — — — — +55 — 69.2% +0.69 0–1 1–0 — -0.43 2004 1887 148.7 +1.38 +2.62 1.092 51.5% +33 -284 -100 60.2% +0.52 12–6 (67%) 14–7 (67%) 109.1 +0.23
27 1999 1721 149.4 — — — — -67 +83 — 56.9% +0.53 5–10 (33%) 11–10 (52%) 97.9 -2.15 2005 1862 154.9 +1.31 +3.44 1.125 52.2% +10 -139 -50 60.9% +0.77 8–8 (50%) 7–5 (58%) 100.4 -1.12
28 2000 1717 137.4 — — — — -35 +105 -161 57.7% +0.27 11–11 (50%) 22–12 (65%) 103.5 +1.57 2006 1863 140.5 -0.75 +2.34 1.039 50.6% +65 -104 — 60.0% +0.60 8–3 (73%) 7–4 (64%) 106.1 +0.78
29 2001 1823 138.8 — — — — -113 +14 -234 55.9% +0.32 10–8 (56%) 19–13 (59%) 105.8 -0.38 2007 1907 153.1 +4.21 +1.95 1.186 52.7% +55 — -153 65.2% +0.94 1–1 8–5 (62%) — -1.12
30 2002 1774 143.3 — — — — -28 +122 — 57.1% +0.34 16–10 (62%) 16–13 (55%) 102.1 -0.43 2008 1889 153.4 +2.15 +3.22 1.128 51.9% +5 -79 -37 57.0% +0.37 7–5 (58%) 7–4 (64%) 102.3 -1.13
31 2003 1835 143.2 +4.34 -1.40 1.064 51.1% +15 -32 -219 59.6% +0.49 12–10 (55%) 25–19 (57%) 101.2 +1.73 2009 1762 145.0 -1.02 -0.24 0.930 49.3% +63 +45 +54 48.5% -0.09 4–4 (50%) 5–4 (56%) 99.1 -1.73
32 2004 1731 108.3 -5.09 -3.78 0.366 33.4% +8 — — 0.0% -4.17 — — — -0.47 2010 1722 106.1 +0.99 -2.77 0.774 46.3% — — +51 27.3% -1.09 1–1 0–1 — -0.60
33 2005 1592 108.9 -4.60 -4.26 0.672 42.5% +43 +145 — 16.0% -2.44 0–2 1–3 (25%) — +0.39 — — — — — — — — — — — — — — — —
34 2006 1608 110.3 +0.93 +2.53 1.201 52.2% +26 — — 66.7% +0.50 — 0–1 — -0.20 — — — — — — — — — — — — — — — —
35 2007 1615 121.2 -0.65 +0.01 0.814 46.6% +66 — — 33.3% -1.22 0–1 3–0 (100%) — -0.31 — — — — — — — — — — — — — — — —
36 2008 1699 118.9 +2.44 +0.53 1.125 52.9% — +102 — 73.3% +1.20 2–1 (67%) 1–1 — +0.21 — — — — — — — — — — — — — — — —
38 2010 1689 101.0 -1.64 -2.05 0.830 46.2% — — — 50.0% -1.50 — 2–0 — +0.37 — — — — — — — — — — — — — — — —
Career — 1923 143.4 +2.19 -1.55 0.940 49.1% -17 +62 -210 53.2% +0.12 76–76 (50%) 124–100 (55%) 104.2 +0.59 — 1995 155.1 +1.02 +1.86 1.060 51.2% +25 -127 -17 56.7% +0.45 106–67 (61%) 107–77 (58%) 111.9 -1.01

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.