H2H data updated: 2026-09-05 00:00 UTC

Andrea Gaudenzi vs Nicolas Kiefer H2H: 1-1

Andrea Gaudenzi and Nicolas Kiefer are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, Andrea Gaudenzi leads 1–0 on clay, while Nicolas Kiefer leads 1–0 on hard courts. Most recently, Nicolas Kiefer won the 2000 US Open round of 128 7-5 6-4 0-6 6-4.

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Andrea Gaudenzi
ITA Age 53 Right-Handed 183 cm / 6'0"
H2H
1 – 1
2 main-draw meetings
Nicolas Kiefer
GER Age 49 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Nicolas Kiefer #14 7-5 6-4 0-6 6-4 Andrea Gaudenzi #103 Match data Aug 30, 2000* R128 US Open Grand Slam Hard
Andrea Gaudenzi #74 6-7(4) 3-0 (ret.) Nicolas Kiefer #8 Match data May 25, 2000* R32 St. Poelten ATP 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
Andrea Gaudenzi #1,441 #18 1,522 1,867 206 221 48.2% 0 0 0 0 3 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 Andrea Gaudenzi Nicolas Kiefer
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 1990 0–1 0.0% #861 1,489 0 0 1994 0–1 0.0% — 1,489 0 0
17 1991 0–3 0.0% #632 1,456 0 0 1995 3–3 50.0% #206 1,527 0 0
18 — — — — — — — 1996 7–9 43.8% #128 1,563 0 0
19 1993 17–10 63.0% #60 1,670 0 0 1997 26–16 61.9% #32 1,799 0 1
20 1994 36–29 55.4% #24 1,775 0 0 1998 31–25 55.4% #35 1,792 0 1
21 1995 31–25 55.4% #22 1,682 0 0 1999 53–21 71.6% #6 1,922 0 4
22 1996 26–27 49.1% #55 1,657 0 0 2000 30–16 65.2% #20 1,900 0 6
23 1997 14–20 41.2% #57 1,641 0 0 2001 26–25 51.0% #42 1,763 0 6
24 1998 30–24 55.6% #44 1,678 0 1 2002 19–24 44.2% #72 1,717 0 6
25 1999 13–14 48.1% #84 1,646 0 1 2003 19–17 52.8% #58 1,727 0 6
26 2000 8–16 33.3% #101 1,591 0 1 2004 34–20 63.0% #21 1,886 0 6
27 2001 17–19 47.2% #54 1,694 0 3 2005 31–22 58.5% #22 1,862 0 6
28 2002 11–26 29.7% #120 1,534 0 3 2006 14–8 63.6% #48 1,863 0 6
29 2003 3–7 30.0% #293 1,533 0 3 2007 19–12 61.3% #49 1,906 0 6
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

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 Andrea Gaudenzi 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 1990 — — — — 0 1 1 0.0% — — — — — — — — 1994 — — — — — — — — — — — — 0 1 1 0.0%
17 1991 — — — — 0 3 3 0.0% — — — — — — — — 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 1993 2 1 3 66.7% 15 8 23 65.2% — — — — 0 1 1 0.0% 1997 7 5 12 58.3% 3 4 7 42.9% 5 2 7 71.4% 11 5 16 68.8%
20 1994 6 8 14 42.9% 25 14 39 64.1% 0 3 3 0.0% 5 4 9 55.6% 1998 24 15 39 61.5% 4 4 8 50.0% 2 3 5 40.0% 1 3 4 25.0%
21 1995 9 6 15 60.0% 22 15 37 59.5% 0 1 1 0.0% 0 3 3 0.0% 1999 41 15 56 73.2% 2 2 4 50.0% 6 1 7 85.7% 4 3 7 57.1%
22 1996 9 11 20 45.0% 14 9 23 60.9% 1 3 4 25.0% 2 4 6 33.3% 2000 27 11 38 71.1% 1 3 4 25.0% 2 2 4 50.0% — — — —
23 1997 0 3 3 0.0% 14 16 30 46.7% — — — — 0 1 1 0.0% 2001 11 13 24 45.8% 6 6 12 50.0% 4 2 6 66.7% 5 4 9 55.6%
24 1998 6 12 18 33.3% 24 12 36 66.7% — — — — — — — — 2002 10 15 25 40.0% 1 5 6 16.7% 7 3 10 70.0% 1 1 2 50.0%
25 1999 0 1 1 0.0% 13 13 26 50.0% — — — — — — — — 2003 14 11 25 56.0% 1 3 4 25.0% 4 3 7 57.1% — — — —
26 2000 4 7 11 36.4% 4 8 12 33.3% 0 1 1 0.0% — — — — 2004 30 14 44 68.2% 2 4 6 33.3% 2 2 4 50.0% — — — —
27 2001 2 10 12 16.7% 14 5 19 73.7% — — — — 1 4 5 20.0% 2005 15 13 28 53.6% 6 4 10 60.0% 2 2 4 50.0% 8 3 11 72.7%
28 2002 3 9 12 25.0% 8 15 23 34.8% 0 1 1 0.0% 0 1 1 0.0% 2006 8 4 12 66.7% 6 4 10 60.0% — — — — — — — —
29 2003 0 2 2 0.0% 2 4 6 33.3% — — — — 1 1 2 50.0% 2007 17 9 26 65.4% — — — — 2 3 5 40.0% — — — —
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% — — — —
Career — 41 70 111 36.9% 155 123 278 55.8% 1 9 10 10.0% 9 19 28 32.1% — 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 376/426 of Andrea Gaudenzi'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 Andrea Gaudenzi 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 1991 3/3 1.3 3.7 72.4% 59.4% 28.8% 53.3% 20.8% 51.6% 32.3% 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 1993 25/27 1.8 2.4 68.8% 67.1% 47.0% 54.4% 53.6% 61.2% 41.7% 1997 37/42 7.9 3.5 55.2% 77.0% 48.3% 60.5% 52.5% 64.1% 36.7%
20 1994 59/65 2.2 2.9 66.5% 66.0% 50.2% 58.4% 37.6% 60.5% 40.8% 1998 49/56 6.2 4.7 53.7% 74.8% 47.8% 55.1% 44.4% 62.5% 39.0%
21 1995 55/56 1.5 2.8 60.6% 69.1% 48.6% 60.9% 40.7% 61.2% 40.8% 1999 56/74 6.6 4.3 51.5% 75.7% 53.2% 61.8% 43.5% 64.7% 40.4%
22 1996 43/53 1.7 3.3 63.5% 64.8% 50.7% 56.2% 40.2% 59.6% 40.9% 2000 38/46 6.4 4.3 52.7% 74.9% 52.3% 61.7% 48.3% 64.3% 40.1%
23 1997 29/34 2.0 3.4 61.2% 65.4% 46.0% 48.8% 47.4% 57.6% 40.3% 2001 44/51 6.3 4.1 50.3% 71.1% 48.8% 54.0% 50.7% 60.0% 40.0%
24 1998 42/54 2.6 3.8 62.4% 67.5% 48.5% 47.2% 44.2% 60.0% 38.5% 2002 40/43 6.2 4.5 52.6% 74.1% 47.8% 58.8% 50.7% 61.5% 37.6%
25 1999 23/27 1.7 2.5 64.8% 62.9% 47.7% 60.5% 45.1% 57.2% 40.4% 2003 36/36 6.5 3.8 50.8% 73.1% 49.9% 58.1% 44.7% 61.8% 37.4%
26 2000 21/24 3.8 3.7 57.8% 65.2% 48.1% 52.5% 41.8% 57.6% 39.1% 2004 51/54 7.3 3.8 54.9% 77.8% 48.4% 61.1% 41.4% 64.5% 38.7%
27 2001 30/36 4.2 3.9 54.9% 69.8% 51.7% 54.4% 39.2% 61.5% 38.3% 2005 52/53 7.6 3.8 53.4% 74.2% 51.4% 56.4% 51.3% 63.6% 40.9%
28 2002 36/37 3.3 4.8 53.2% 69.3% 46.2% 51.8% 42.1% 58.3% 37.0% 2006 21/22 7.4 4.0 51.7% 72.0% 50.1% 59.5% 43.3% 61.3% 40.2%
29 2003 10/10 2.3 3.8 58.1% 65.9% 45.7% 49.0% 35.4% 57.0% 34.8% 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 — —/— — — — — — — — — — 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%
Career — 376/427 2.4 3.3 61.6% 66.8% 48.5% 54.8% 42.0% 59.6% 39.7% — 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 Andrea Gaudenzi 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 1990 1489 101.6 — — — — — — — 0.0% -1.50 — 0–1 — +0.03 1994 1489 97.0 — — — — — — — 0.0% -4.00 — — — +0.05
17 1991 1456 97.8 -1.84 -2.41 0.666 42.1% — +45 — 14.3% -2.71 0–1 — — +0.18 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 1993 1670 138.3 +0.72 +0.59 1.074 51.5% -107 +47 — 61.9% +0.75 6–5 (55%) 8–2 (80%) 109.1 +0.33 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 1994 1775 146.5 -0.33 +2.81 1.032 50.5% -85 +58 -229 50.0% +0.09 13–5 (72%) 9–7 (56%) 108.9 -2.78 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 1995 1683 147.0 +0.24 +2.23 1.049 50.7% +5 +132 — 54.1% +0.20 8–7 (53%) 10–8 (56%) 101.1 +0.04 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 1996 1657 140.7 -1.41 +2.12 1.013 50.2% +8 +119 -108 49.2% +0.03 7–10 (41%) 10–9 (53%) 98.5 +0.03 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 1997 1641 129.7 -2.44 +1.67 0.950 49.0% -36 +61 — 46.2% -0.30 4–6 (40%) 3–4 (43%) 95.6 -1.16 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 1998 1678 136.1 -0.82 +0.58 0.964 49.2% -115 +126 — 51.4% +0.14 15–6 (71%) 7–9 (44%) 106.9 +1.21 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 1999 1646 124.2 -2.64 +0.64 0.944 48.8% — +88 — 45.6% -0.29 5–3 (63%) 2–2 (50%) 101.5 +0.59 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 2000 1592 119.8 -2.54 +0.58 0.923 48.4% -48 +48 — 39.4% -0.48 3–8 (27%) 2–6 (25%) 93.4 +0.05 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 2001 1694 133.8 +0.11 -0.18 0.993 49.3% -182 +106 — 52.5% -0.26 2–5 (29%) 10–5 (67%) 103.8 -2.07 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 2002 1534 124.9 -2.65 -0.09 0.889 47.7% -44 +117 — 34.4% -0.82 4–4 (50%) 5–10 (33%) 96.5 -0.26 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 2003 1533 118.0 -2.25 -2.03 0.810 45.9% -48 +99 — 34.6% -1.23 2–2 (50%) 1–0 — -0.55 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 — — — — — — — — — — — — — — — — 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 — — — — — — — — — — — — — — — — 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 — — — — — — — — — — — — — — — — 2010 1722 106.1 +0.99 -2.77 0.774 46.3% — — +51 27.3% -1.09 1–1 0–1 — -0.60
Career — 1868 141.8 -1.03 +1.22 0.982 49.5% -63 +93 -160 48.2% -0.11 69–62 (53%) 67–63 (52%) 105.4 -1.02 — 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.