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

Sam Querrey vs Nicolas Kiefer H2H: 1-0

Sam Querrey holds a 1–0 lead over Nicolas Kiefer in their ATP head-to-head. Across 1 main-draw meeting, Sam Querrey leads 1–0 on hard courts. Most recently, Sam Querrey won the 2008 Las Vegas round of 16 6-3 6-1.

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Sam Querrey
USA Age 38 Right-Handed 198 cm / 6'6"
H2H
1 – 0
1 main draw meetings
Nicolas Kiefer
GER Age 49 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Sam Querrey #66 6-3 6-1 Nicolas Kiefer #48 Match data Mar 7, 2008* R16 Las Vegas 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
Sam Querrey #529 #11 2,595 2,038 372 316 54.1% 0 0 0 2 8 10
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 Sam Querrey 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 2006 6–11 35.3% #130 1,541 0 0 1996 7–9 43.8% #128 1,563 0 0
19 2007 19–22 46.3% #63 1,637 0 0 1997 26–16 61.9% #32 1,799 0 1
20 2008 28–24 53.8% #39 1,778 0 1 1998 31–25 55.4% #35 1,792 0 1
21 2009 39–22 63.9% #25 1,900 0 2 1999 53–21 71.6% #6 1,922 0 4
22 2010 35–21 62.5% #18 1,872 0 6 2000 30–16 65.2% #20 1,900 0 6
23 2011 12–13 48.0% #93 1,817 0 6 2001 26–25 51.0% #42 1,763 0 6
24 2012 37–24 60.7% #22 2,005 0 7 2002 19–24 44.2% #72 1,717 0 6
25 2013 25–21 54.3% #46 1,875 0 7 2003 19–17 52.8% #58 1,727 0 6
26 2014 26–20 56.5% #35 1,896 0 7 2004 34–20 63.0% #21 1,886 0 6
27 2015 20–24 45.5% #59 1,812 0 7 2005 31–22 58.5% #22 1,862 0 6
28 2016 28–23 54.9% #31 1,797 0 8 2006 14–8 63.6% #48 1,863 0 6
29 2017 35–20 63.6% #13 1,944 0 10 2007 19–12 61.3% #49 1,906 0 6
30 2018 21–22 48.8% #51 1,823 0 10 2008 22–17 56.4% #38 1,889 0 6
31 2019 24–17 58.5% #44 1,898 0 10 2009 12–16 42.9% #116 1,762 0 6
32 2020 3–6 33.3% #53 1,818 0 10 2010 1–3 25.0% #722 1,722 0 6
33 2021 10–16 38.5% #108 1,689 0 10 — — — — — — —
34 2022 4–10 28.6% #329 1,644 0 10 — — — — — — —

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 Sam Querrey 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 2006 5 10 15 33.3% — — — — 1 1 2 50.0% — — — — 1996 1 2 3 33.3% 3 4 7 42.9% 1 1 2 50.0% 2 2 4 50.0%
19 2007 18 14 32 56.3% 1 5 6 16.7% 0 2 2 0.0% 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 2008 23 16 39 59.0% 4 4 8 50.0% 1 3 4 25.0% 0 1 1 0.0% 1998 24 15 39 61.5% 4 4 8 50.0% 2 3 5 40.0% 1 3 4 25.0%
21 2009 30 14 44 68.2% 1 4 5 20.0% 8 4 12 66.7% — — — — 1999 41 15 56 73.2% 2 2 4 50.0% 6 1 7 85.7% 4 3 7 57.1%
22 2010 19 14 33 57.6% 7 5 12 58.3% 9 2 11 81.8% — — — — 2000 27 11 38 71.1% 1 3 4 25.0% 2 2 4 50.0% — — — —
23 2011 8 8 16 50.0% 2 4 6 33.3% 2 1 3 66.7% — — — — 2001 11 13 24 45.8% 6 6 12 50.0% 4 2 6 66.7% 5 4 9 55.6%
24 2012 28 16 44 63.6% 2 4 6 33.3% 7 4 11 63.6% — — — — 2002 10 15 25 40.0% 1 5 6 16.7% 7 3 10 70.0% 1 1 2 50.0%
25 2013 21 14 35 60.0% 3 4 7 42.9% 1 3 4 25.0% — — — — 2003 14 11 25 56.0% 1 3 4 25.0% 4 3 7 57.1% — — — —
26 2014 16 14 30 53.3% 4 3 7 57.1% 6 3 9 66.7% — — — — 2004 30 14 44 68.2% 2 4 6 33.3% 2 2 4 50.0% — — — —
27 2015 8 15 23 34.8% 6 5 11 54.5% 6 4 10 60.0% — — — — 2005 15 13 28 53.6% 6 4 10 60.0% 2 2 4 50.0% 8 3 11 72.7%
28 2016 16 14 30 53.3% 4 5 9 44.4% 8 4 12 66.7% — — — — 2006 8 4 12 66.7% 6 4 10 60.0% — — — — — — — —
29 2017 23 13 36 63.9% 5 4 9 55.6% 7 3 10 70.0% — — — — 2007 17 9 26 65.4% — — — — 2 3 5 40.0% — — — —
30 2018 16 16 32 50.0% 1 4 5 20.0% 4 2 6 66.7% — — — — 2008 12 11 23 52.2% 5 4 9 55.6% 5 2 7 71.4% — — — —
31 2019 13 14 27 48.1% 3 1 4 75.0% 8 2 10 80.0% — — — — 2009 4 7 11 36.4% 7 7 14 50.0% 1 2 3 33.3% — — — —
32 2020 3 4 7 42.9% 0 2 2 0.0% — — — — — — — — 2010 — — — — 0 1 1 0.0% 1 2 3 33.3% — — — —
33 2021 2 9 11 18.2% 0 2 2 0.0% 8 5 13 61.5% — — — — — — — — — — — — — — — — — — — — —
34 2022 1 5 6 16.7% 1 1 2 50.0% 2 4 6 33.3% — — — — — — — — — — — — — — — — — — — — —
Career — 250 210 460 54.3% 44 57 101 43.6% 78 47 125 62.4% 0 2 2 0.0% — 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 684/688 of Sam Querrey'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 Sam Querrey 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 2006 17/17 11.4 3.2 57.2% 75.9% 49.8% 62.8% 42.9% 64.6% 34.0% 1996 11/16 6.1 2.5 52.2% 76.6% 47.8% 53.2% 49.7% 62.7% 39.8%
19 2007 41/41 12.4 3.2 56.6% 79.2% 48.3% 59.9% 39.4% 65.8% 33.9% 1997 37/42 7.9 3.5 55.2% 77.0% 48.3% 60.5% 52.5% 64.1% 36.7%
20 2008 51/52 10.2 3.2 59.1% 74.3% 49.1% 61.1% 41.2% 64.2% 35.5% 1998 49/56 6.2 4.7 53.7% 74.8% 47.8% 55.1% 44.4% 62.5% 39.0%
21 2009 61/61 11.8 3.0 59.4% 80.0% 53.4% 60.4% 44.4% 69.2% 36.2% 1999 56/74 6.6 4.3 51.5% 75.7% 53.2% 61.8% 43.5% 64.7% 40.4%
22 2010 56/56 12.3 3.4 61.5% 79.4% 50.9% 64.4% 45.2% 68.3% 35.1% 2000 38/46 6.4 4.3 52.7% 74.9% 52.3% 61.7% 48.3% 64.3% 40.1%
23 2011 25/25 8.9 3.2 59.6% 74.8% 51.2% 66.6% 31.2% 65.2% 34.4% 2001 44/51 6.3 4.1 50.3% 71.1% 48.8% 54.0% 50.7% 60.0% 40.0%
24 2012 61/61 11.6 3.9 57.6% 80.5% 51.1% 60.0% 42.0% 68.1% 36.0% 2002 40/43 6.2 4.5 52.6% 74.1% 47.8% 58.8% 50.7% 61.5% 37.6%
25 2013 45/46 12.8 3.6 59.6% 78.6% 48.7% 57.6% 35.7% 66.5% 33.6% 2003 36/36 6.5 3.8 50.8% 73.1% 49.9% 58.1% 44.7% 61.8% 37.4%
26 2014 45/46 14.4 2.8 60.5% 79.4% 51.9% 73.7% 41.8% 68.7% 33.8% 2004 51/54 7.3 3.8 54.9% 77.8% 48.4% 61.1% 41.4% 64.5% 38.7%
27 2015 44/44 13.8 3.6 59.5% 78.7% 54.4% 64.0% 37.1% 68.9% 33.7% 2005 52/53 7.6 3.8 53.4% 74.2% 51.4% 56.4% 51.3% 63.6% 40.9%
28 2016 51/51 13.1 3.1 58.6% 79.9% 52.3% 59.4% 39.6% 68.5% 33.4% 2006 21/22 7.4 4.0 51.7% 72.0% 50.1% 59.5% 43.3% 61.3% 40.2%
29 2017 55/55 13.5 3.2 57.1% 79.8% 51.8% 62.5% 49.5% 67.9% 37.0% 2007 30/31 6.7 2.5 57.0% 79.9% 51.6% 64.6% 33.9% 67.8% 38.1%
30 2018 43/43 14.3 3.7 58.2% 81.9% 51.7% 60.0% 41.2% 69.3% 34.2% 2008 34/39 7.2 2.4 53.6% 76.3% 51.9% 55.4% 44.9% 64.9% 39.6%
31 2019 41/41 16.8 4.0 62.1% 81.2% 49.4% 60.5% 33.2% 69.1% 33.8% 2009 28/28 7.7 3.9 52.0% 75.0% 47.3% 62.9% 45.8% 61.9% 35.4%
32 2020 9/9 16.8 3.6 60.3% 78.2% 50.8% 33.4% 31.7% 67.5% 31.1% 2010 4/4 11.3 6.5 51.8% 77.7% 47.3% 55.7% 31.0% 63.0% 28.6%
33 2021 25/26 15.2 5.2 56.8% 81.9% 47.7% 52.4% 33.2% 67.3% 30.3% — —/— — — — — — — — — —
34 2022 14/14 12.4 4.7 58.3% 78.6% 46.1% 56.3% 26.6% 64.8% 29.4% — —/— — — — — — — — — —
Career — 684/688 12.9 3.5 59.0% 79.2% 50.9% 61.3% 40.2% 67.6% 34.5% — 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 Sam Querrey 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 2005 1490 99.8 — — — — — — — — — — — — — 1995 1528 117.0 +1.19 -1.22 1.032 51.3% +26 — — 50.0% 0.00 1–1 — — +0.08
18 2006 1542 124.2 +1.62 -2.01 0.962 49.2% -13 — — 46.7% -0.31 1–7 (13%) 2–4 (33%) — -0.03 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 2007 1637 141.5 +2.16 -1.29 0.990 50.0% +50 -158 — 47.6% -0.08 6–8 (43%) 9–10 (47%) — +0.09 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 2008 1779 145.5 +1.02 -0.70 0.993 50.1% +29 -209 -254 51.5% +0.04 11–8 (58%) 9–8 (53%) — +0.64 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 2009 1900 149.0 +4.79 +0.01 1.176 52.3% +27 -361 -223 62.0% +0.61 8–11 (42%) 13–12 (52%) — +1.27 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 2010 1873 152.2 +3.95 -0.55 1.108 51.9% +5 -250 +9 58.4% +0.58 13–11 (54%) 14–17 (45%) — +2.65 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 2011 1817 141.7 +1.37 -1.06 0.989 49.9% +19 -173 +81 46.7% -0.10 3–4 (43%) 4–7 (36%) — +0.50 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 2012 2006 157.4 +4.09 +0.39 1.129 52.1% +3 -305 -92 57.8% +0.40 12–10 (55%) 20–13 (61%) — -0.61 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 2013 1875 153.6 +2.58 -2.07 1.003 50.0% +71 -164 -51 50.0% -0.07 9–8 (53%) 15–15 (50%) — +0.18 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 2014 1896 144.5 +3.69 -2.25 1.080 51.0% +17 -178 -23 56.4% +0.33 6–9 (40%) 12–12 (50%) — +0.27 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 2015 1812 152.4 +3.52 -1.09 1.082 51.0% -39 -68 +110 46.7% -0.02 7–9 (44%) 13–18 (42%) — -2.68 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 2016 1797 152.8 +4.13 -1.97 1.060 50.9% -38 -84 +223 56.0% +0.27 8–9 (47%) 18–16 (53%) — +1.80 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 2017 1945 161.8 +4.11 +1.06 1.153 52.3% -43 -192 +131 59.1% +0.70 11–6 (65%) 14–13 (52%) — +1.92 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 2018 1823 152.3 +4.08 -0.93 1.114 51.7% -5 -127 +252 54.1% +0.58 6–11 (35%) 9–20 (31%) — +1.23 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 2019 1898 146.9 +4.59 -1.49 1.095 51.3% -82 -158 +201 55.6% +0.20 5–5 (50%) 18–15 (55%) — -0.90 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 2020 1818 128.8 +2.33 -0.47 0.956 48.3% -33 — — 37.0% -0.67 1–1 4–3 (57%) — -0.60 2010 1722 106.1 +0.99 -2.77 0.774 46.3% — — +51 27.3% -1.09 1–1 0–1 — -0.60
33 2021 1690 124.0 +2.41 -3.84 0.926 48.7% -54 — +303 39.1% -0.53 3–5 (38%) 8–8 (50%) — -0.24 — — — — — — — — — — — — — — — —
34 2022 1645 117.4 -0.20 -3.77 0.835 47.4% -72 — +250 28.6% -0.97 2–1 (67%) 2–7 (22%) — +0.03 — — — — — — — — — — — — — — — —
Career — 2039 155.6 +3.33 -1.02 1.064 51.0% 0 -181 +77 53.2% +0.22 112–123 (48%) 184–198 (48%) 96.0 +0.81 — 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.