H2H data updated: 2026-09-14 00:00 UTC

Monica Niculescu vs Karin Knapp H2H: 1-1

Monica Niculescu and Karin Knapp are tied 1–1 in their WTA head-to-head. Across 2 main-draw meetings, they are tied 1–1 on hard courts. Most recently, Karin Knapp won the 2012 Tashkent round of 32 2-6 6-3 7-5.

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Monica Niculescu
Romania Age 38 Right-Handed 168 cm / 5'6"
H2H
1 – 1
2 main-draw meetings
Karin Knapp
Italy Age 39 Right-Handed 180 cm / 5'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Karin Knapp #135 2-6 6-3 7-5 Monica Niculescu #47 Match data Sep 13, 2012* R32 Tashkent International → modern equivalent WTA 250 Hard
Monica Niculescu #34 6-7(2) 7-5 7-6(3) Karin Knapp #158 Match data Oct 20, 2011* R32 Luxembourg International → modern equivalent WTA 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
Monica Niculescu #958 #28 1,960 1,779 179 214 45.5% 0 0 0 0 3 3
Karin Knapp #971 #33 1,420 1,710 103 118 46.6% 0 0 0 0 2 2

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 Monica Niculescu Karin Knapp
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 2007 0–1 0.0% #152 1,490 0 0 2006 3–4 42.9% #122 1,513 0 0
20 2008 8–15 34.8% #48 1,543 0 0 2007 14–14 50.0% #50 1,587 0 0
21 2009 10–22 31.2% #103 1,522 0 0 2008 11–14 44.0% #80 1,603 0 0
22 2010 6–9 40.0% #82 1,574 0 0 2009 3–6 33.3% #205 1,555 0 0
23 2011 21–15 58.3% #30 1,757 0 0 — — — — — — —
24 2012 15–23 39.5% #58 1,639 0 0 2011 0–3 0.0% #164 1,530 0 0
25 2013 22–21 51.2% #59 1,635 0 1 2012 7–7 50.0% #120 1,561 0 0
26 2014 22–19 53.7% #46 1,688 0 2 2013 20–15 57.1% #41 1,680 0 0
27 2015 20–21 48.8% #39 1,676 0 2 2014 18–24 42.9% #54 1,644 0 1
28 2016 26–19 57.8% #38 1,758 0 3 2015 22–20 52.4% #51 1,704 0 2
29 2017 12–19 38.7% #77 1,622 0 3 2016 5–10 33.3% #147 1,637 0 2
30 2018 9–15 37.5% #99 1,591 0 3 2017 0–1 0.0% #966 1,617 0 2
31 2019 8–10 44.4% #118 1,638 0 3 — — — — — — —
32 2020 0–2 0.0% #144 1,586 0 3 — — — — — — —
33 2021 0–3 0.0% #274 1,519 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 Monica Niculescu Karin Knapp
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 %
19 2007 0 1 1 0.0% — — — — — — — — — — — — 2006 1 2 3 33.3% 2 2 4 50.0% — — — — — — — —
20 2008 6 10 16 37.5% 1 3 4 25.0% 1 2 3 33.3% — — — — 2007 3 5 8 37.5% 11 7 18 61.1% 0 2 2 0.0% — — — —
21 2009 6 13 19 31.6% 3 6 9 33.3% 0 2 2 0.0% 1 1 2 50.0% 2008 7 8 15 46.7% 4 5 9 44.4% — — — — 0 1 1 0.0%
22 2010 4 7 11 36.4% 1 1 2 50.0% 1 1 2 50.0% — — — — 2009 3 4 7 42.9% 0 2 2 0.0% — — — — — — — —
23 2011 17 9 26 65.4% 3 4 7 42.9% 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
24 2012 12 15 27 44.4% 1 5 6 16.7% 1 2 3 33.3% 1 1 2 50.0% 2011 0 2 2 0.0% 0 1 1 0.0% — — — — — — — —
25 2013 20 14 34 58.8% 2 4 6 33.3% 0 2 2 0.0% 0 1 1 0.0% 2012 1 2 3 33.3% 6 4 10 60.0% 0 1 1 0.0% — — — —
26 2014 18 14 32 56.3% 4 4 8 50.0% 0 1 1 0.0% — — — — 2013 6 6 12 50.0% 11 8 19 57.9% 3 1 4 75.0% — — — —
27 2015 10 14 24 41.7% 3 3 6 50.0% 7 4 11 63.6% — — — — 2014 13 15 28 46.4% 4 7 11 36.4% 0 1 1 0.0% 1 1 2 50.0%
28 2016 23 13 36 63.9% 2 5 7 28.6% 1 1 2 50.0% — — — — 2015 10 13 23 43.5% 12 4 16 75.0% 0 3 3 0.0% — — — —
29 2017 11 13 24 45.8% 0 4 4 0.0% 1 2 3 33.3% — — — — 2016 0 4 4 0.0% 5 5 10 50.0% 0 1 1 0.0% — — — —
30 2018 9 14 23 39.1% — — — — 0 1 1 0.0% — — — — 2017 0 1 1 0.0% — — — — — — — — — — — —
31 2019 7 8 15 46.7% — — — — 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
32 2020 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
33 2021 0 2 2 0.0% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
Career — 143 148 291 49.1% 20 40 60 33.3% 14 23 37 37.8% 2 3 5 40.0% — 44 62 106 41.5% 55 45 100 55.0% 3 9 12 25.0% 1 2 3 33.3%

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 341/394 of Monica Niculescu's and 191/221 of Karin Knapp'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 Monica Niculescu Karin Knapp
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%
19 2007 1/1 0.0 4.0 57.4% 45.2% 34.8% 25.0% 100.0% 40.7% 30.8% 2006 2/7 2.5 4.5 56.9% 69.2% 46.9% 37.5% 67.9% 60.1% 43.1%
20 2008 19/23 1.3 1.9 72.5% 54.5% 38.0% 41.9% 45.0% 49.9% 43.0% 2007 19/28 3.0 6.3 54.6% 65.6% 42.6% 50.6% 36.5% 55.0% 44.6%
21 2009 30/32 1.0 1.4 71.6% 55.9% 46.3% 44.0% 48.4% 52.8% 43.8% 2008 21/25 2.1 5.0 60.9% 60.3% 40.5% 48.7% 51.3% 52.6% 43.1%
22 2010 12/15 0.3 1.0 73.4% 53.0% 39.4% 47.7% 45.0% 49.3% 43.9% 2009 8/9 0.8 5.3 50.2% 59.7% 41.0% 49.3% 44.6% 49.7% 43.9%
23 2011 29/36 0.7 1.5 74.9% 55.3% 46.1% 44.2% 60.9% 52.3% 48.8% — —/— — — — — — — — — —
24 2012 33/38 1.3 1.1 67.1% 58.0% 47.7% 51.8% 46.0% 54.3% 43.3% 2011 3/3 1.0 10.7 59.1% 60.2% 39.8% 51.3% 49.7% 51.6% 41.5%
25 2013 37/43 0.8 1.5 74.6% 59.2% 45.9% 47.0% 52.2% 55.3% 49.4% 2012 14/14 1.6 6.0 59.3% 60.0% 40.5% 49.9% 43.5% 52.0% 44.1%
26 2014 34/41 1.2 3.1 70.2% 60.8% 41.3% 50.8% 59.1% 55.0% 51.0% 2013 29/35 2.9 5.0 56.6% 67.7% 43.8% 54.9% 50.9% 57.4% 46.7%
27 2015 32/41 1.1 2.8 70.4% 60.4% 46.2% 47.8% 43.9% 55.9% 43.1% 2014 39/42 3.6 4.7 57.7% 65.5% 43.2% 50.6% 51.2% 55.9% 41.9%
28 2016 41/46 1.3 1.9 71.6% 57.0% 43.8% 43.2% 51.4% 53.4% 50.0% 2015 41/42 2.5 4.2 64.1% 61.4% 48.0% 52.5% 49.5% 56.7% 43.8%
29 2017 27/31 0.4 1.2 82.8% 52.1% 47.0% 51.7% 49.9% 51.2% 44.9% 2016 14/15 2.7 4.9 56.1% 61.7% 41.1% 46.8% 45.0% 52.8% 40.7%
30 2018 23/24 0.3 1.5 77.6% 55.6% 46.3% 46.4% 51.8% 53.0% 47.4% 2017 1/1 3.0 5.0 48.1% 60.0% 29.6% 58.3% 50.0% 44.2% 44.7%
31 2019 18/18 0.4 1.5 79.1% 56.5% 45.6% 37.0% 46.4% 54.6% 46.2% — —/— — — — — — — — — —
32 2020 2/2 1.0 1.5 79.6% 49.7% 35.3% 49.4% 42.2% 46.7% 40.2% — —/— — — — — — — — — —
33 2021 3/3 0.3 1.3 74.9% 47.5% 49.1% 46.0% 50.0% 46.5% 36.7% — —/— — — — — — — — — —
Career — 341/394 0.9 1.8 73.4% 56.9% 44.8% 46.4% 50.7% 53.3% 46.5% — 191/221 2.6 5.1 58.6% 63.4% 43.5% 51.0% 48.2% 55.0% 43.6%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. 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 Monica Niculescu Karin Knapp
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
19 2007 1491 98.2 -0.35 +1.13 0.519 36.6% — — — 0.0% -4.50 — — — +0.05 2006 1513 108.6 -0.12 -2.10 1.081 52.1% -5 +47 — 47.1% +0.47 1–2 (33%) 2–4 (33%) 98.3 +0.25
20 2008 1543 120.1 -2.90 -0.19 0.859 46.3% +10 -13 +47 34.6% -1.12 4–6 (40%) 1–2 (33%) 99.8 +0.05 2007 1587 121.4 -0.55 -0.12 0.990 49.7% -69 +90 — 49.3% 0.00 6–7 (46%) 6–3 (67%) 101.3 +0.69
21 2009 1523 112.7 -2.66 -0.26 0.928 48.0% +26 -22 — 34.7% -1.10 3–7 (30%) 2–1 (67%) — +0.79 2008 1603 120.0 -1.76 -0.63 0.909 48.0% -25 +27 — 46.6% -0.74 3–5 (38%) 5–3 (63%) 99.5 +1.04
22 2010 1574 117.8 -2.83 +0.34 0.866 46.8% -1 — — 41.7% -0.81 3–3 (50%) 1–2 (33%) 101.0 -0.32 2009 1556 96.3 -3.79 -1.88 0.874 46.7% +5 — — 25.0% -1.75 — 1–1 — +1.05
23 2011 1758 133.3 -2.06 +3.84 1.021 50.5% -10 -238 -215 53.8% +0.41 7–3 (70%) 3–5 (38%) 103.5 +0.37 — — — — — — — — — — — — — — — —
24 2012 1640 125.0 -1.30 -0.32 0.949 48.8% +48 -164 -85 42.4% -0.47 3–8 (27%) 6–1 (86%) 96.9 +0.44 2011 1531 107.5 +1.01 -0.38 0.858 47.0% — — — 33.3% -1.11 0–3 (0%) 2–1 (67%) — -0.47
25 2013 1635 132.6 -0.55 +4.14 1.104 52.3% +66 -181 — 52.1% +0.24 6–8 (43%) 4–2 (67%) 97.6 -0.53 2012 1562 108.4 -2.46 -0.27 0.918 48.2% -36 +93 — 45.7% -0.69 5–2 (71%) 1–1 — +0.13
26 2014 1688 140.2 -1.17 +5.03 1.133 53.0% +7 -148 — 57.1% +1.03 8–12 (40%) 2–6 (25%) 93.9 -0.85 2013 1681 127.7 +1.14 +1.48 1.097 52.0% -86 -9 -89 57.3% +0.40 5–7 (42%) 5–1 (83%) 103.3 +0.66
27 2015 1677 131.5 -1.57 +1.81 0.978 49.6% -20 -106 -62 50.0% +0.03 10–10 (50%) 4–0 (100%) 105.1 -0.95 2014 1645 120.9 -0.61 -1.24 0.951 49.0% -13 -18 — 45.7% -0.48 4–8 (33%) 6–5 (55%) 97.7 +0.92
28 2016 1759 135.4 -1.87 +5.53 1.073 51.7% +23 -229 — 56.0% +0.42 8–6 (57%) 1–4 (20%) 100.6 +0.22 2015 1704 130.8 -0.82 +1.99 1.010 50.4% -81 +81 -160 53.8% +0.27 6–5 (55%) 7–7 (50%) 102.7 -0.73
29 2017 1622 118.4 -3.66 +1.26 0.920 48.1% +24 -137 -27 40.9% -0.64 5–5 (50%) 3–2 (60%) 100.1 +0.21 2016 1637 105.2 -1.99 -0.46 0.862 46.9% -62 +121 — 36.4% -1.42 1–4 (20%) 2–0 — -0.47
30 2018 1591 133.1 -2.27 +2.61 1.010 50.2% +6 — — 39.6% -0.48 3–5 (38%) 1–2 (33%) — -0.38 2017 1618 — -0.56 -4.07 0.802 44.4% — — — — — — — — +0.14
31 2019 1638 129.0 -1.03 +1.89 1.019 50.3% +11 — -43 46.2% -0.05 3–4 (43%) 2–5 (29%) 98.8 -0.23 — — — — — — — — — — — — — — — —
32 2020 1587 99.7 -1.05 +1.06 0.754 43.7% — — — 33.3% -2.34 0–2 — — -0.11 — — — — — — — — — — — — — — — —
33 2021 1519 98.6 -2.42 -0.40 0.685 41.9% — — — 0.0% -3.17 — — — -0.37 — — — — — — — — — — — — — — — —
35 2023 1531 101.7 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 1780 134.0 -1.87 +2.44 0.996 49.9% +19 -140 -64 46.8% -0.13 63–79 (44%) 30–32 (48%) 97.9 -0.41 — 1711 124.9 -0.85 +0.14 0.969 49.4% -43 +53 -119 48.2% -0.26 31–43 (42%) 37–26 (59%) 103.3 +1.45

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.