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

Kenneth Carlsen vs Nicolas Kiefer H2H: 2-0

Kenneth Carlsen holds a 2–0 lead over Nicolas Kiefer in their ATP head-to-head. Across 2 main-draw meetings, Kenneth Carlsen leads 2–0 on hard courts. Most recently, Kenneth Carlsen won the 2006 Las Vegas round of 16 W/O.

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Kenneth Carlsen
DEN Age 53 Left-Handed 190 cm / 6'3"
H2H
2 – 0
2 main draw meetings
Nicolas Kiefer
GER Age 49 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kenneth Carlsen #125 (w/o) Nicolas Kiefer #12 Match data Mar 3, 2006* R16 Las Vegas ATP International Series → modern equivalent ATP 250 Hard
Kenneth Carlsen #96 5-2 (ret.) Nicolas Kiefer #63 Match data Sep 12, 2002* R32 Tashkent ATP International Series → modern equivalent ATP 250 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
Kenneth Carlsen #1,158 #41 791 1,754 241 275 46.7% 0 0 0 2 1 3
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 Kenneth Carlsen 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 — — — — — — — 1996 7–9 43.8% #128 1,563 0 0
19 1992 10–8 55.6% #69 1,582 0 0 1997 26–16 61.9% #32 1,799 0 1
20 1993 17–27 38.6% #92 1,574 0 0 1998 31–25 55.4% #35 1,792 0 1
21 1994 20–21 48.8% #108 1,625 0 0 1999 53–21 71.6% #6 1,922 0 4
22 1995 25–22 53.2% #72 1,692 0 0 2000 30–16 65.2% #20 1,900 0 6
23 1996 19–23 45.2% #73 1,635 0 0 2001 26–25 51.0% #42 1,763 0 6
24 1997 24–26 48.0% #75 1,655 0 0 2002 19–24 44.2% #72 1,717 0 6
25 1998 22–23 48.9% #83 1,622 0 1 2003 19–17 52.8% #58 1,727 0 6
26 1999 19–19 50.0% #85 1,658 0 1 2004 34–20 63.0% #21 1,886 0 6
27 — — — — — — — 2005 31–22 58.5% #22 1,862 0 6
28 2001 9–7 56.2% #153 1,678 0 1 2006 14–8 63.6% #48 1,863 0 6
29 2002 16–14 53.3% #65 1,743 0 2 2007 19–12 61.3% #49 1,906 0 6
30 2003 13–22 37.1% #108 1,594 0 2 2008 22–17 56.4% #38 1,889 0 6
31 2004 15–19 44.1% #84 1,650 0 2 2009 12–16 42.9% #116 1,762 0 6
32 2005 17–25 40.5% #66 1,573 0 3 2010 1–3 25.0% #722 1,722 0 6
33 2006 15–18 45.5% #137 1,597 0 3 — — — — — — —
34 2007 0–1 0.0% #498 1,481 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 Kenneth Carlsen 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 — — — — — — — — — — — — — — — — — 1996 1 2 3 33.3% 3 4 7 42.9% 1 1 2 50.0% 2 2 4 50.0%
19 1992 6 3 9 66.7% 0 1 1 0.0% — — — — 4 4 8 50.0% 1997 7 5 12 58.3% 3 4 7 42.9% 5 2 7 71.4% 11 5 16 68.8%
20 1993 9 14 23 39.1% 2 4 6 33.3% 2 3 5 40.0% 4 6 10 40.0% 1998 24 15 39 61.5% 4 4 8 50.0% 2 3 5 40.0% 1 3 4 25.0%
21 1994 10 12 22 45.5% 1 2 3 33.3% 3 2 5 60.0% 6 5 11 54.5% 1999 41 15 56 73.2% 2 2 4 50.0% 6 1 7 85.7% 4 3 7 57.1%
22 1995 15 10 25 60.0% 2 2 4 50.0% 2 3 5 40.0% 6 7 13 46.2% 2000 27 11 38 71.1% 1 3 4 25.0% 2 2 4 50.0% — — — —
23 1996 11 13 24 45.8% 2 3 5 40.0% 1 3 4 25.0% 5 4 9 55.6% 2001 11 13 24 45.8% 6 6 12 50.0% 4 2 6 66.7% 5 4 9 55.6%
24 1997 17 12 29 58.6% 1 5 6 16.7% 1 3 4 25.0% 5 6 11 45.5% 2002 10 15 25 40.0% 1 5 6 16.7% 7 3 10 70.0% 1 1 2 50.0%
25 1998 11 11 22 50.0% 0 2 2 0.0% 1 3 4 25.0% 10 7 17 58.8% 2003 14 11 25 56.0% 1 3 4 25.0% 4 3 7 57.1% — — — —
26 1999 12 13 25 48.0% 1 2 3 33.3% 6 3 9 66.7% 0 1 1 0.0% 2004 30 14 44 68.2% 2 4 6 33.3% 2 2 4 50.0% — — — —
27 — — — — — — — — — — — — — — — — — 2005 15 13 28 53.6% 6 4 10 60.0% 2 2 4 50.0% 8 3 11 72.7%
28 2001 5 4 9 55.6% — — — — 4 3 7 57.1% — — — — 2006 8 4 12 66.7% 6 4 10 60.0% — — — — — — — —
29 2002 11 9 20 55.0% — — — — 4 3 7 57.1% 1 2 3 33.3% 2007 17 9 26 65.4% — — — — 2 3 5 40.0% — — — —
30 2003 11 14 25 44.0% 1 4 5 20.0% 1 3 4 25.0% 0 1 1 0.0% 2008 12 11 23 52.2% 5 4 9 55.6% 5 2 7 71.4% — — — —
31 2004 9 12 21 42.9% 0 3 3 0.0% 4 3 7 57.1% 2 1 3 66.7% 2009 4 7 11 36.4% 7 7 14 50.0% 1 2 3 33.3% — — — —
32 2005 13 14 27 48.1% 0 5 5 0.0% 2 3 5 40.0% 2 3 5 40.0% 2010 — — — — 0 1 1 0.0% 1 2 3 33.3% — — — —
33 2006 14 14 28 50.0% 0 1 1 0.0% 0 2 2 0.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
34 2007 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 154 156 310 49.7% 10 34 44 22.7% 31 37 68 45.6% 46 48 94 48.9% — 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 448/516 of Kenneth Carlsen'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 Kenneth Carlsen 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 1992 13/18 8.4 1.8 58.2% 77.8% 54.9% 67.5% 38.7% 68.2% 33.3% 1997 37/42 7.9 3.5 55.2% 77.0% 48.3% 60.5% 52.5% 64.1% 36.7%
20 1993 41/44 6.8 2.9 55.0% 75.7% 49.6% 51.7% 33.0% 64.2% 34.6% 1998 49/56 6.2 4.7 53.7% 74.8% 47.8% 55.1% 44.4% 62.5% 39.0%
21 1994 36/41 7.2 2.8 57.5% 75.3% 52.1% 65.5% 43.1% 65.2% 34.3% 1999 56/74 6.6 4.3 51.5% 75.7% 53.2% 61.8% 43.5% 64.7% 40.4%
22 1995 42/47 8.8 3.9 57.6% 76.1% 50.6% 65.4% 46.2% 65.2% 34.3% 2000 38/46 6.4 4.3 52.7% 74.9% 52.3% 61.7% 48.3% 64.3% 40.1%
23 1996 32/42 7.9 4.1 58.6% 75.2% 50.8% 66.3% 30.0% 64.9% 34.9% 2001 44/51 6.3 4.1 50.3% 71.1% 48.8% 54.0% 50.7% 60.0% 40.0%
24 1997 39/50 9.0 3.7 56.3% 75.3% 50.4% 65.7% 42.1% 64.4% 35.5% 2002 40/43 6.2 4.5 52.6% 74.1% 47.8% 58.8% 50.7% 61.5% 37.6%
25 1998 32/45 9.4 4.5 54.5% 76.8% 48.7% 66.6% 42.3% 64.1% 34.5% 2003 36/36 6.5 3.8 50.8% 73.1% 49.9% 58.1% 44.7% 61.8% 37.4%
26 1999 33/38 5.9 3.5 59.1% 74.4% 50.3% 58.0% 41.7% 64.6% 37.1% 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 2001 13/16 8.9 6.2 55.5% 73.0% 48.1% 62.6% 38.0% 61.9% 37.2% 2006 21/22 7.4 4.0 51.7% 72.0% 50.1% 59.5% 43.3% 61.3% 40.2%
29 2002 25/30 9.7 2.8 59.8% 75.3% 53.2% 75.9% 31.5% 66.6% 34.2% 2007 30/31 6.7 2.5 57.0% 79.9% 51.6% 64.6% 33.9% 67.8% 38.1%
30 2003 34/35 8.3 2.9 58.2% 73.2% 50.2% 51.3% 34.2% 63.3% 34.5% 2008 34/39 7.2 2.4 53.6% 76.3% 51.9% 55.4% 44.9% 64.9% 39.6%
31 2004 34/34 7.5 3.1 60.6% 73.0% 49.3% 48.2% 38.9% 63.6% 33.4% 2009 28/28 7.7 3.9 52.0% 75.0% 47.3% 62.9% 45.8% 61.9% 35.4%
32 2005 41/42 6.1 2.7 60.3% 71.4% 47.6% 63.1% 31.3% 61.7% 31.7% 2010 4/4 11.3 6.5 51.8% 77.7% 47.3% 55.7% 31.0% 63.0% 28.6%
33 2006 32/33 7.1 2.1 61.4% 72.6% 50.2% 58.8% 39.9% 64.0% 34.4% — —/— — — — — — — — — —
34 2007 1/1 13.0 1.0 76.3% 80.0% 50.0% 0.0% 0.0% 72.9% 21.2% — —/— — — — — — — — — —
Career — 448/516 7.8 3.3 58.1% 74.6% 50.2% 61.1% 38.0% 64.3% 34.4% — 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 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 Kenneth Carlsen 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 — — — — — — — — — — — — — — — — 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 1992 1583 123.7 +3.17 -2.70 1.049 50.9% +31 — — 52.4% +0.38 3–1 (75%) 2–5 (29%) — +1.52 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%) — +0.64
20 1993 1575 137.7 +2.19 -2.94 0.967 49.0% +16 -19 +24 41.8% -0.30 3–4 (43%) 4–9 (31%) — -0.66 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%) — -0.30
21 1994 1626 135.7 +2.62 -2.80 0.985 49.7% -7 -82 +48 48.0% +0.05 6–3 (67%) 6–12 (33%) — +0.62 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%) — +0.49
22 1995 1692 137.1 +2.15 -2.47 0.985 50.1% +25 -113 -61 50.0% +0.01 8–7 (53%) 13–12 (52%) — -0.47 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%) — -0.03
23 1996 1635 128.4 +2.08 -2.12 0.993 49.7% +14 -66 -25 47.7% -0.21 6–9 (40%) 11–9 (55%) — +1.61 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%) — -2.55
24 1997 1656 129.2 +2.54 -2.10 0.998 50.1% +36 -138 -67 50.0% -0.02 9–12 (43%) 16–15 (52%) — +1.85 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%) — -0.90
25 1998 1622 133.7 +1.62 -2.28 0.960 49.4% +55 — -75 49.6% +0.09 9–11 (45%) 8–11 (42%) — +2.63 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%) — +0.36
26 1999 1658 136.2 +1.26 +0.13 1.048 50.7% +21 -163 -30 51.6% +0.05 5–7 (42%) 9–6 (60%) — +1.32 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%) — +0.23
27 — — — — — — — — — — — — — — — — 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%) — -1.12
28 2001 1679 118.7 +0.30 -0.45 0.975 49.8% -2 — -48 60.5% +0.53 2–3 (40%) 6–2 (75%) — +0.81 2006 1863 140.5 -0.75 +2.34 1.039 50.6% +65 -104 — 60.0% +0.60 8–3 (73%) 7–4 (64%) — +0.78
29 2002 1743 133.7 +3.42 -2.03 1.023 50.3% 0 — -100 51.4% +0.04 6–5 (55%) 14–9 (61%) — -0.90 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 2003 1594 113.9 +0.36 -2.67 0.941 48.7% +43 -159 -14 41.9% -0.54 7–9 (44%) 11–6 (65%) — +2.57 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%) — -1.13
31 2004 1650 124.0 +0.26 -2.15 0.919 48.5% +14 -237 -5 40.7% -0.60 8–4 (67%) 11–7 (61%) — -0.08 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%) — -1.73
32 2005 1573 117.9 -1.06 -3.54 0.828 46.7% +32 -220 +37 38.1% -1.00 8–4 (67%) 15–12 (56%) — +1.51 2010 1722 106.1 +0.99 -2.77 0.774 46.3% — — +51 27.3% -1.09 1–1 0–1 — -0.60
33 2006 1598 132.6 +0.39 -1.27 0.954 49.1% +53 — — 41.8% -0.23 8–4 (67%) 6–8 (43%) — -0.19 — — — — — — — — — — — — — — — —
34 2007 1481 95.8 -0.84 -0.44 0.782 45.6% — — — 0.0% -2.00 — 0–1 — +0.29 — — — — — — — — — — — — — — — —
Career — 1754 134.8 +1.46 -2.20 0.965 49.4% +26 -127 -28 46.8% -0.17 88–83 (51%) 132–124 (52%) 104.2 +2.42 — 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.