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

Nicolas Kiefer vs Albert Portas H2H: 1-0

Nicolas Kiefer holds a 1–0 lead over Albert Portas in their ATP head-to-head. Across 1 main-draw meeting, Nicolas Kiefer leads 1–0 on grass. Most recently, Nicolas Kiefer won the 2000 Halle Open round of 16 6-7(11) 6-1 6-2.

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Nicolas Kiefer
GER Age 49 Right-Handed 183 cm / 6'0"
H2H
1 – 0
1 main draw meetings
Albert Portas
ESP Age 52 Right-Handed 188 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Nicolas Kiefer #13 6-7(11) 6-1 6-2 Albert Portas #53 Match data Jun 16, 2000* R16 Halle Open ATP International Series → modern equivalent ATP 250 Grass

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
Albert Portas #1,082 #19 1,350 1,826 142 198 41.8% 0 1 0 0 0 1

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 Albert Portas
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 1993 0–1 0.0% — 1,489 0 0
20 1998 31–25 55.4% #35 1,792 0 1 — — — — — — —
21 1999 53–21 71.6% #6 1,922 0 4 1995 4–3 57.1% #119 1,549 0 0
22 2000 30–16 65.2% #20 1,900 0 6 1996 0–4 0.0% #182 1,505 0 0
23 2001 26–25 51.0% #42 1,763 0 6 1997 22–17 56.4% #35 1,623 0 0
24 2002 19–24 44.2% #72 1,717 0 6 1998 13–24 35.1% #84 1,592 0 0
25 2003 19–17 52.8% #58 1,727 0 6 1999 14–18 43.8% #90 1,598 0 0
26 2004 34–20 63.0% #21 1,886 0 6 2000 22–23 48.9% #51 1,633 0 0
27 2005 31–22 58.5% #22 1,862 0 6 2001 32–28 53.3% #20 1,684 0 1
28 2006 14–8 63.6% #48 1,863 0 6 2002 9–23 28.1% #88 1,525 0 1
29 2007 19–12 61.3% #49 1,906 0 6 2003 10–20 33.3% #85 1,523 0 1
30 2008 22–17 56.4% #38 1,889 0 6 2004 4–16 20.0% #175 1,443 0 1
31 2009 12–16 42.9% #116 1,762 0 6 2005 2–6 25.0% #119 1,437 0 1
32 2010 1–3 25.0% #722 1,722 0 6 2006 8–12 40.0% #140 1,522 0 1
33 — — — — — — — 2007 2–3 40.0% #338 1,548 0 1

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 Albert Portas
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% 1993 — — — — 0 1 1 0.0% — — — — — — — —
20 1998 24 15 39 61.5% 4 4 8 50.0% 2 3 5 40.0% 1 3 4 25.0% — — — — — — — — — — — — — — — — —
21 1999 41 15 56 73.2% 2 2 4 50.0% 6 1 7 85.7% 4 3 7 57.1% 1995 — — — — 4 3 7 57.1% — — — — — — — —
22 2000 27 11 38 71.1% 1 3 4 25.0% 2 2 4 50.0% — — — — 1996 — — — — 0 4 4 0.0% — — — — — — — —
23 2001 11 13 24 45.8% 6 6 12 50.0% 4 2 6 66.7% 5 4 9 55.6% 1997 0 2 2 0.0% 22 11 33 66.7% — — — — 0 4 4 0.0%
24 2002 10 15 25 40.0% 1 5 6 16.7% 7 3 10 70.0% 1 1 2 50.0% 1998 3 7 10 30.0% 10 16 26 38.5% 0 1 1 0.0% — — — —
25 2003 14 11 25 56.0% 1 3 4 25.0% 4 3 7 57.1% — — — — 1999 1 4 5 20.0% 13 13 26 50.0% 0 1 1 0.0% — — — —
26 2004 30 14 44 68.2% 2 4 6 33.3% 2 2 4 50.0% — — — — 2000 1 5 6 16.7% 18 15 33 54.5% 3 2 5 60.0% 0 1 1 0.0%
27 2005 15 13 28 53.6% 6 4 10 60.0% 2 2 4 50.0% 8 3 11 72.7% 2001 2 8 10 20.0% 29 15 44 65.9% 0 2 2 0.0% 1 3 4 25.0%
28 2006 8 4 12 66.7% 6 4 10 60.0% — — — — — — — — 2002 3 7 10 30.0% 6 14 20 30.0% 0 2 2 0.0% — — — —
29 2007 17 9 26 65.4% — — — — 2 3 5 40.0% — — — — 2003 1 3 4 25.0% 9 15 24 37.5% 0 2 2 0.0% — — — —
30 2008 12 11 23 52.2% 5 4 9 55.6% 5 2 7 71.4% — — — — 2004 0 2 2 0.0% 4 14 18 22.2% — — — — — — — —
31 2009 4 7 11 36.4% 7 7 14 50.0% 1 2 3 33.3% — — — — 2005 — — — — 2 6 8 25.0% — — — — — — — —
32 2010 — — — — 0 1 1 0.0% 1 2 3 33.3% — — — — 2006 — — — — 8 11 19 42.1% 0 1 1 0.0% — — — —
33 — — — — — — — — — — — — — — — — — 2007 — — — — 2 3 5 40.0% — — — — — — — —
Career — 221 145 366 60.4% 47 55 102 46.1% 44 30 74 59.5% 35 25 60 58.3% — 11 38 49 22.4% 127 141 268 47.4% 3 11 14 21.4% 1 8 9 11.1%

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 302/340 of Albert Portas'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 Albert Portas
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% 1993 1/1 1.0 2.0 54.9% 53.8% 37.5% 58.3% 0.0% 46.5% 23.1%
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% 1995 7/7 1.0 2.4 62.3% 63.3% 50.9% 65.0% 38.1% 57.6% 41.5%
22 2000 38/46 6.4 4.3 52.7% 74.9% 52.3% 61.7% 48.3% 64.3% 40.1% 1996 4/4 2.5 3.3 61.6% 58.5% 40.2% 42.1% 45.4% 51.6% 32.0%
23 2001 44/51 6.3 4.1 50.3% 71.1% 48.8% 54.0% 50.7% 60.0% 40.0% 1997 35/39 2.8 2.7 66.9% 63.8% 50.3% 51.5% 46.0% 59.2% 41.4%
24 2002 40/43 6.2 4.5 52.6% 74.1% 47.8% 58.8% 50.7% 61.5% 37.6% 1998 30/37 3.7 3.7 56.2% 64.0% 44.6% 49.1% 40.8% 55.7% 36.9%
25 2003 36/36 6.5 3.8 50.8% 73.1% 49.9% 58.1% 44.7% 61.8% 37.4% 1999 25/32 3.4 3.7 60.1% 66.5% 49.1% 52.6% 45.9% 59.3% 40.4%
26 2004 51/54 7.3 3.8 54.9% 77.8% 48.4% 61.1% 41.4% 64.5% 38.7% 2000 40/45 4.9 3.9 52.9% 72.2% 48.0% 54.6% 44.5% 60.6% 40.3%
27 2005 52/53 7.6 3.8 53.4% 74.2% 51.4% 56.4% 51.3% 63.6% 40.9% 2001 50/60 5.4 4.0 51.9% 73.6% 49.3% 51.8% 45.5% 61.7% 41.8%
28 2006 21/22 7.4 4.0 51.7% 72.0% 50.1% 59.5% 43.3% 61.3% 40.2% 2002 29/32 4.6 4.4 57.8% 68.5% 46.4% 61.3% 35.1% 59.1% 34.2%
29 2007 30/31 6.7 2.5 57.0% 79.9% 51.6% 64.6% 33.9% 67.8% 38.1% 2003 30/30 4.3 3.8 57.3% 67.2% 44.2% 53.2% 40.1% 57.3% 34.5%
30 2008 34/39 7.2 2.4 53.6% 76.3% 51.9% 55.4% 44.9% 64.9% 39.6% 2004 20/20 3.3 3.8 58.9% 67.0% 44.5% 54.6% 41.8% 57.4% 33.7%
31 2009 28/28 7.7 3.9 52.0% 75.0% 47.3% 62.9% 45.8% 61.9% 35.4% 2005 8/8 5.3 4.0 56.2% 68.5% 49.4% 60.2% 35.4% 59.4% 41.0%
32 2010 4/4 11.3 6.5 51.8% 77.7% 47.3% 55.7% 31.0% 63.0% 28.6% 2006 20/20 5.0 3.3 52.4% 70.8% 43.7% 58.1% 38.4% 57.9% 35.0%
33 — —/— — — — — — — — — — 2007 3/5 4.0 2.0 53.1% 65.1% 44.6% 29.2% 68.5% 56.9% 36.2%
Career — 537/602 6.9 3.8 53.1% 75.1% 49.9% 58.9% 46.0% 63.3% 38.9% — 302/340 4.2 3.7 57.0% 68.3% 47.1% 53.8% 42.4% 58.8% 38.2%

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 Albert Portas
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%) 112.8 +0.64 1993 1489 97.9 -0.36 -2.93 0.431 38.2% — — — 0.0% -4.50 — — — +0.01
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%) 100.3 -0.30 — — — — — — — — — — — — — — — —
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%) 110.9 +0.49 1995 1549 117.3 -1.11 +0.50 0.977 49.8% — +36 — 52.9% +0.29 2–1 (67%) 1–0 — +0.19
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%) 104.4 -0.03 1996 1505 104.2 -1.11 -1.99 0.660 41.9% — +20 — 11.1% -2.67 0–1 0–1 — -0.26
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%) 97.2 -2.55 1997 1624 137.9 -1.24 +2.07 1.015 50.4% -145 +129 — 53.1% +0.18 8–5 (62%) 9–3 (75%) 105.9 +0.28
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%) 98.4 -0.90 1998 1593 127.8 -4.13 -1.13 0.833 46.5% -75 +77 — 39.1% -1.10 5–8 (38%) 5–6 (45%) 97.4 -0.52
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%) 106.1 +0.36 1999 1599 127.3 -1.18 +0.60 0.992 50.1% -115 +97 — 44.3% -0.43 4–5 (44%) 5–7 (42%) 97.3 +0.15
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%) 109.1 +0.23 2000 1634 133.9 -1.01 +1.75 1.021 50.4% -170 +97 -55 49.1% -0.11 6–7 (46%) 6–5 (55%) 101.8 -0.53
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%) 100.4 -1.12 2001 1684 138.5 +0.01 +2.56 1.089 51.3% -206 +145 — 53.9% +0.33 9–15 (38%) 13–11 (54%) 98.7 -0.03
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%) 106.1 +0.78 2002 1526 118.0 -2.52 -3.44 0.838 47.1% -52 +128 — 34.6% -0.89 3–6 (33%) 3–7 (30%) 94.8 +2.18
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 2003 1523 121.5 -3.46 -2.15 0.808 46.4% -58 +89 — 32.9% -1.30 2–3 (40%) 2–7 (22%) 97.1 +0.03
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 2004 1444 107.2 -4.07 -3.59 0.791 45.9% — +62 — 26.1% -1.35 0–3 (0%) 1–4 (20%) 94.2 +1.14
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 2005 1438 117.9 -0.16 +0.12 1.010 50.3% — +45 — 33.3% -0.56 0–2 0–2 — -0.17
32 2010 1722 106.1 +0.99 -2.77 0.774 46.3% — — +51 27.3% -1.09 1–1 0–1 — -0.60 2006 1522 120.5 -1.93 -2.12 0.831 46.7% — +46 — 37.5% -0.98 4–1 (80%) 4–4 (50%) 107.3 -0.98
33 — — — — — — — — — — — — — — — — 2007 1548 107.4 -0.42 -2.10 0.839 46.7% — +48 — 40.0% -0.70 — 0–1 — +0.30
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 — 1826 132.5 -1.82 -0.13 0.929 48.7% -125 +97 -55 43.3% -0.48 43–57 (43%) 49–58 (46%) 96.9 +0.53

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.