H2H data updated: 2026-09-01 00:00 UTC

Nicolas Kiefer vs Cecil Mamiit H2H: 2-0

Nicolas Kiefer holds a 2–0 lead over Cecil Mamiit in their ATP head-to-head. Across 2 main-draw meetings, Nicolas Kiefer leads 2–0 on hard courts. Most recently, Nicolas Kiefer won the 1999 Tashkent quarterfinal 6-1 7-5.

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Nicolas Kiefer
GER Age 49 Right-Handed 183 cm / 6'0"
H2H
2 – 0
2 main draw meetings
Cecil Mamiit
PHI Age 50 Right-Handed 173 cm / 5'8"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Nicolas Kiefer #13 6-1 7-5 Cecil Mamiit #82 Match data Sep 18, 1999* QF Tashkent ATP World Series → modern equivalent ATP 250 Hard
Nicolas Kiefer #37 6-2 7-5 7-6(7) Cecil Mamiit #127 Match data Jan 22, 1999* R64 Australian 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
Nicolas Kiefer #720 #4 2,447 1,995 347 255 57.6% 0 0 0 1 5 6
Cecil Mamiit #1,573 #72 625 1,631 48 95 33.6% 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 Nicolas Kiefer Cecil Mamiit
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 1997 26–16 61.9% #32 1,799 0 1 — — — — — — —
20 1998 31–25 55.4% #35 1,792 0 1 1996 0–4 0.0% #200 1,471 0 0
21 1999 53–21 71.6% #6 1,922 0 4 1997 2–7 22.2% #229 1,441 0 0
22 2000 30–16 65.2% #20 1,900 0 6 1998 0–1 0.0% #130 1,432 0 0
23 2001 26–25 51.0% #42 1,763 0 6 1999 16–18 47.1% #93 1,552 0 0
24 2002 19–24 44.2% #72 1,717 0 6 2000 6–12 33.3% #121 1,537 0 0
25 2003 19–17 52.8% #58 1,727 0 6 2001 10–18 35.7% #111 1,555 0 0
26 2004 34–20 63.0% #21 1,886 0 6 2002 8–14 36.4% #111 1,555 0 0
27 2005 31–22 58.5% #22 1,862 0 6 2003 3–15 16.7% #183 1,433 0 0
28 2006 14–8 63.6% #48 1,863 0 6 2004 1–3 25.0% #226 1,492 0 0
29 2007 19–12 61.3% #49 1,906 0 6 2005 1–2 33.3% #209 1,469 0 0
30 2008 22–17 56.4% #38 1,889 0 6 — — — — — — —
31 2009 12–16 42.9% #116 1,762 0 6 — — — — — — —
32 2010 1–3 25.0% #722 1,722 0 6 2008 1–1 50.0% #462 1,468 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 Nicolas Kiefer Cecil Mamiit
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 1997 7 5 12 58.3% 3 4 7 42.9% 5 2 7 71.4% 11 5 16 68.8% — — — — — — — — — — — — — — — — —
20 1998 24 15 39 61.5% 4 4 8 50.0% 2 3 5 40.0% 1 3 4 25.0% 1996 0 4 4 0.0% — — — — — — — — — — — —
21 1999 41 15 56 73.2% 2 2 4 50.0% 6 1 7 85.7% 4 3 7 57.1% 1997 2 6 8 25.0% — — — — 0 1 1 0.0% — — — —
22 2000 27 11 38 71.1% 1 3 4 25.0% 2 2 4 50.0% — — — — 1998 0 1 1 0.0% — — — — — — — — — — — —
23 2001 11 13 24 45.8% 6 6 12 50.0% 4 2 6 66.7% 5 4 9 55.6% 1999 13 12 25 52.0% 2 3 5 40.0% 1 3 4 25.0% — — — —
24 2002 10 15 25 40.0% 1 5 6 16.7% 7 3 10 70.0% 1 1 2 50.0% 2000 6 11 17 35.3% 0 1 1 0.0% — — — — — — — —
25 2003 14 11 25 56.0% 1 3 4 25.0% 4 3 7 57.1% — — — — 2001 8 14 22 36.4% 1 1 2 50.0% 1 3 4 25.0% — — — —
26 2004 30 14 44 68.2% 2 4 6 33.3% 2 2 4 50.0% — — — — 2002 6 9 15 40.0% 1 1 2 50.0% 1 4 5 20.0% — — — —
27 2005 15 13 28 53.6% 6 4 10 60.0% 2 2 4 50.0% 8 3 11 72.7% 2003 2 9 11 18.2% 0 4 4 0.0% 1 2 3 33.3% — — — —
28 2006 8 4 12 66.7% 6 4 10 60.0% — — — — — — — — 2004 1 3 4 25.0% — — — — — — — — — — — —
29 2007 17 9 26 65.4% — — — — 2 3 5 40.0% — — — — 2005 0 1 1 0.0% — — — — — — — — 1 1 2 50.0%
30 2008 12 11 23 52.2% 5 4 9 55.6% 5 2 7 71.4% — — — — — — — — — — — — — — — — — — — — —
31 2009 4 7 11 36.4% 7 7 14 50.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
32 2010 — — — — 0 1 1 0.0% 1 2 3 33.3% — — — — 2008 1 1 2 50.0% — — — — — — — — — — — —
Career — 221 145 366 60.4% 47 55 102 46.1% 44 30 74 59.5% 35 25 60 58.3% — 39 71 110 35.5% 4 10 14 28.6% 4 13 17 23.5% 1 1 2 50.0%

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 537/601 of Nicolas Kiefer's and 128/143 of Cecil Mamiit'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 Nicolas Kiefer Cecil Mamiit
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% 1996 3/4 2.7 5.3 45.4% 60.2% 51.2% 50.2% 42.9% 55.3% 33.2%
21 1999 56/74 6.6 4.3 51.5% 75.7% 53.2% 61.8% 43.5% 64.7% 40.4% 1997 8/9 4.4 2.0 59.6% 67.9% 47.4% 49.8% 55.1% 59.7% 35.8%
22 2000 38/46 6.4 4.3 52.7% 74.9% 52.3% 61.7% 48.3% 64.3% 40.1% 1998 1/1 3.0 2.0 61.5% 70.8% 56.7% 42.9% 80.0% 65.4% 42.9%
23 2001 44/51 6.3 4.1 50.3% 71.1% 48.8% 54.0% 50.7% 60.0% 40.0% 1999 32/34 2.6 3.0 57.3% 65.9% 47.7% 50.8% 38.8% 58.0% 39.6%
24 2002 40/43 6.2 4.5 52.6% 74.1% 47.8% 58.8% 50.7% 61.5% 37.6% 2000 14/18 2.4 2.8 54.3% 67.2% 48.8% 56.2% 38.3% 59.0% 36.7%
25 2003 36/36 6.5 3.8 50.8% 73.1% 49.9% 58.1% 44.7% 61.8% 37.4% 2001 23/28 4.2 3.0 58.1% 67.3% 49.1% 61.8% 35.1% 59.7% 36.4%
26 2004 51/54 7.3 3.8 54.9% 77.8% 48.4% 61.1% 41.4% 64.5% 38.7% 2002 20/22 3.5 3.3 57.9% 66.7% 49.9% 60.6% 39.4% 59.5% 37.2%
27 2005 52/53 7.6 3.8 53.4% 74.2% 51.4% 56.4% 51.3% 63.6% 40.9% 2003 18/18 1.8 2.7 62.6% 62.6% 42.3% 49.5% 41.2% 55.2% 34.4%
28 2006 21/22 7.4 4.0 51.7% 72.0% 50.1% 59.5% 43.3% 61.3% 40.2% 2004 4/4 3.8 1.8 51.5% 68.5% 51.2% 54.3% 24.2% 59.9% 37.9%
29 2007 30/31 6.7 2.5 57.0% 79.9% 51.6% 64.6% 33.9% 67.8% 38.1% 2005 3/3 3.7 2.0 68.5% 74.3% 58.9% 36.4% 27.8% 69.5% 36.5%
30 2008 34/39 7.2 2.4 53.6% 76.3% 51.9% 55.4% 44.9% 64.9% 39.6% — —/— — — — — — — — — —
31 2009 28/28 7.7 3.9 52.0% 75.0% 47.3% 62.9% 45.8% 61.9% 35.4% — —/— — — — — — — — — —
32 2010 4/4 11.3 6.5 51.8% 77.7% 47.3% 55.7% 31.0% 63.0% 28.6% 2008 2/2 5.5 2.0 60.9% 72.3% 51.4% 61.1% 54.2% 63.8% 35.8%
Career — 537/602 6.9 3.8 53.1% 75.1% 49.9% 58.9% 46.0% 63.3% 38.9% — 128/143 3.1 2.9 58.0% 66.4% 48.2% 54.5% 39.5% 58.8% 37.1%

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 Nicolas Kiefer Cecil Mamiit
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 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 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 1996 1471 104.3 +1.39 -2.25 0.743 44.8% +17 — — 18.2% -2.27 0–2 1–1 — -0.21
21 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 1997 1441 108.9 -1.33 -0.30 0.887 47.8% +21 — — 30.4% -1.17 1–2 (33%) 0–2 — +0.42
22 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 1998 1432 101.1 -0.76 -1.41 1.238 53.7% — — — 33.3% +0.33 0–1 — — +0.13
23 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 1999 1552 118.6 -2.72 +1.29 0.942 48.7% +21 -25 -7 46.0% -0.43 6–6 (50%) 7–5 (58%) — +1.34
24 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 2000 1538 123.5 -0.49 +0.64 0.895 47.9% +26 — — 38.6% -0.75 1–4 (20%) 1–2 (33%) — -0.42
25 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 2001 1556 118.7 -2.71 -1.19 0.903 48.3% -16 — -31 44.3% -0.54 3–10 (23%) 5–4 (56%) — +1.11
26 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 2002 1556 122.3 -2.06 -0.26 0.918 48.5% +28 — -90 38.9% -0.89 1–3 (25%) 6–1 (86%) — +0.65
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 2003 1434 110.8 -4.02 -1.08 0.769 45.2% +49 +79 +15 26.7% -1.56 1–4 (20%) 4–4 (50%) — -0.14
28 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 2004 1493 110.5 -0.62 +1.04 0.944 49.1% +47 — — 37.5% -0.38 1–1 — — -0.32
29 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 2005 1469 101.4 +0.98 -1.17 1.195 52.7% +44 — — 60.0% +1.00 0–1 — — +0.37
30 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 2006 1430 95.2 — — — — — — — — — — — — —
31 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 2007 1433 89.5 — — — — — — — — — — — — —
32 2010 1722 106.1 +0.99 -2.77 0.774 46.3% — — +51 27.3% -1.09 1–1 0–1 — -0.60 2008 1469 105.8 -0.73 -1.29 0.989 49.4% — — — 40.0% -0.40 1–0 0–1 — +0.10
33 — — — — — — — — — — — — — — — — 2009 1449 98.8 — — — — — — — — — — — — —
34 — — — — — — — — — — — — — — — — 2010 1440 101.1 — — — — — — — — — — — — —
35 — — — — — — — — — — — — — — — — 2011 1432 98.6 — — — — — — — — — — — — —
Career — 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 — 1631 117.9 -2.17 -0.11 0.899 48.0% +20 +21 -35 39.3% -0.78 15–34 (31%) 24–20 (55%) 99.3 +2.12

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.