H2H data updated: 2026-09-13 00:00 UTC

Sara Errani vs Karin Knapp H2H: 1-2

Karin Knapp holds a 2–1 lead over Sara Errani in their WTA head-to-head. Across 3 main-draw meetings, Sara Errani leads 1–0 on carpet, while Karin Knapp leads 1–0 on clay. Most recently, Karin Knapp won the 2015 Bad Gastein semifinal 7-6(4) 4-6 7-5.

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Sara Errani
Italy Age 39 Right-Handed 164 cm / 5'5"
H2H
1 – 2
3 main-draw meetings
Karin Knapp
Italy Age 39 Right-Handed 180 cm / 5'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Karin Knapp #43 7-6(4) 4-6 7-5 Sara Errani #19 Match data Jul 25, 2015* SF Bad Gastein International → modern equivalent WTA 250 Clay
Sara Errani #7 6-4 6-3 Karin Knapp #45 Match data Jan 31, 2014* R16 Paris Premier → modern equivalent WTA 500 Carpet
Karin Knapp #131 6-2 3-2 (ret.) Sara Errani #32 Match data Mar 14, 2009* R64 Indian Wells Open Premier Mandatory → modern equivalent WTA 1000 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
Sara Errani #476 #5 5,835 2,005 387 304 56.0% 0 0 0 1 8 9
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 Sara Errani Karin Knapp
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 2006 3–3 50.0% #174 1,529 0 0 2006 3–4 42.9% #122 1,513 0 0
20 2007 10–7 58.8% #69 1,613 0 0 2007 14–14 50.0% #50 1,587 0 0
21 2008 29–22 56.9% #42 1,735 0 2 2008 11–14 44.0% #80 1,603 0 0
22 2009 25–27 48.1% #47 1,655 0 2 2009 3–6 33.3% #205 1,555 0 0
23 2010 36–29 55.4% #43 1,722 0 2 — — — — — — —
24 2011 30–26 53.6% #45 1,673 0 2 2011 0–3 0.0% #164 1,530 0 0
25 2012 53–20 72.6% #6 1,897 0 6 2012 7–7 50.0% #120 1,561 0 0
26 2013 46–22 67.6% #7 1,885 0 7 2013 20–15 57.1% #41 1,680 0 0
27 2014 35–23 60.3% #14 1,773 0 7 2014 18–24 42.9% #54 1,644 0 1
28 2015 46–26 63.9% #20 1,751 0 8 2015 22–20 52.4% #51 1,704 0 2
29 2016 21–23 47.7% #49 1,656 0 9 2016 5–10 33.3% #147 1,637 0 2
30 2017 18–16 52.9% #144 1,652 0 9 2017 0–1 0.0% #966 1,617 0 2
31 2018 6–8 42.9% #112 1,767 0 9 — — — — — — —
32 2019 2–6 25.0% #198 1,575 0 9 — — — — — — —
33 2020 4–3 57.1% #131 1,606 0 9 — — — — — — —
34 2021 8–12 40.0% #121 1,574 0 9 — — — — — — —
35 2022 2–5 28.6% #109 1,606 0 9 — — — — — — —
36 2023 3–10 23.1% #105 1,548 0 9 — — — — — — —
37 2024 10–14 41.7% #105 1,693 0 9 — — — — — — —
38 2025 0–2 0.0% #476 1,590 0 9 — — — — — — —

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 Sara Errani 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 2006 — — — — 3 3 6 50.0% — — — — — — — — 2006 1 2 3 33.3% 2 2 4 50.0% — — — — — — — —
20 2007 4 3 7 57.1% 6 4 10 60.0% — — — — — — — — 2007 3 5 8 37.5% 11 7 18 61.1% 0 2 2 0.0% — — — —
21 2008 14 10 24 58.3% 14 10 24 58.3% 1 2 3 33.3% — — — — 2008 7 8 15 46.7% 4 5 9 44.4% — — — — 0 1 1 0.0%
22 2009 16 14 30 53.3% 8 9 17 47.1% 1 3 4 25.0% 0 1 1 0.0% 2009 3 4 7 42.9% 0 2 2 0.0% — — — — — — — —
23 2010 21 16 37 56.8% 11 10 21 52.4% 4 3 7 57.1% — — — — — — — — — — — — — — — — — — — — —
24 2011 14 16 30 46.7% 13 7 20 65.0% 3 3 6 50.0% — — — — 2011 0 2 2 0.0% 0 1 1 0.0% — — — — — — — —
25 2012 23 14 37 62.2% 28 3 31 90.3% 2 3 5 40.0% — — — — 2012 1 2 3 33.3% 6 4 10 60.0% 0 1 1 0.0% — — — —
26 2013 22 15 37 59.5% 21 5 26 80.8% 0 1 1 0.0% 3 1 4 75.0% 2013 6 6 12 50.0% 11 8 19 57.9% 3 1 4 75.0% — — — —
27 2014 13 14 27 48.1% 19 6 25 76.0% 0 2 2 0.0% 3 1 4 75.0% 2014 13 15 28 46.4% 4 7 11 36.4% 0 1 1 0.0% 1 1 2 50.0%
28 2015 22 17 39 56.4% 22 7 29 75.9% 2 2 4 50.0% — — — — 2015 10 13 23 43.5% 12 4 16 75.0% 0 3 3 0.0% — — — —
29 2016 13 14 27 48.1% 7 7 14 50.0% 1 2 3 33.3% — — — — 2016 0 4 4 0.0% 5 5 10 50.0% 0 1 1 0.0% — — — —
30 2017 7 6 13 53.8% 11 8 19 57.9% 0 2 2 0.0% — — — — 2017 0 1 1 0.0% — — — — — — — — — — — —
31 2018 1 2 3 33.3% 5 6 11 45.5% — — — — — — — — — — — — — — — — — — — — — — — — —
32 2019 0 2 2 0.0% 2 4 6 33.3% — — — — — — — — — — — — — — — — — — — — — — — — —
33 2020 1 1 2 50.0% 3 2 5 60.0% — — — — — — — — — — — — — — — — — — — — — — — — —
34 2021 2 6 8 25.0% 6 6 12 50.0% — — — — — — — — — — — — — — — — — — — — — — — — —
35 2022 0 1 1 0.0% 2 4 6 33.3% — — — — — — — — — — — — — — — — — — — — — — — — —
36 2023 1 3 4 25.0% 1 5 6 16.7% 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
37 2024 4 6 10 40.0% 6 7 13 46.2% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
38 2025 — — — — 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 178 160 338 52.7% 188 115 303 62.0% 15 26 41 36.6% 6 3 9 66.7% — 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 593/692 of Sara Errani'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 Sara Errani 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 2006 1/6 0.0 1.0 76.4% 33.3% 38.5% 50.0% 16.7% 34.5% 39.5% 2006 2/7 2.5 4.5 56.9% 69.2% 46.9% 37.5% 67.9% 60.1% 43.1%
20 2007 12/17 0.8 2.3 66.1% 56.1% 48.0% 41.1% 52.6% 53.4% 44.4% 2007 19/28 3.0 6.3 54.6% 65.6% 42.6% 50.6% 36.5% 55.0% 44.6%
21 2008 34/51 0.5 2.7 64.2% 57.6% 46.0% 48.1% 45.8% 53.2% 45.7% 2008 21/25 2.1 5.0 60.9% 60.3% 40.5% 48.7% 51.3% 52.6% 43.1%
22 2009 44/52 0.3 2.5 69.2% 55.6% 44.7% 50.9% 45.1% 52.5% 44.6% 2009 8/9 0.8 5.3 50.2% 59.7% 41.0% 49.3% 44.6% 49.7% 43.9%
23 2010 59/65 0.4 1.5 75.4% 56.2% 44.0% 55.5% 51.2% 53.4% 47.7% — —/— — — — — — — — — —
24 2011 53/56 0.4 1.9 76.2% 57.7% 47.2% 52.0% 48.6% 55.0% 47.1% 2011 3/3 1.0 10.7 59.1% 60.2% 39.8% 51.3% 49.7% 51.6% 41.5%
25 2012 63/73 0.3 1.1 76.1% 60.2% 49.9% 54.1% 56.5% 57.5% 51.5% 2012 14/14 1.6 6.0 59.3% 60.0% 40.5% 49.9% 43.5% 52.0% 44.1%
26 2013 57/68 0.1 1.1 82.1% 57.9% 48.5% 52.4% 51.1% 56.1% 50.4% 2013 29/35 2.9 5.0 56.6% 67.7% 43.8% 54.9% 50.9% 57.4% 46.7%
27 2014 54/58 0.1 1.2 81.3% 56.1% 45.3% 52.4% 50.1% 54.1% 48.1% 2014 39/42 3.6 4.7 57.7% 65.5% 43.2% 50.6% 51.2% 55.9% 41.9%
28 2015 54/72 0.1 1.4 83.3% 54.9% 50.0% 49.2% 55.4% 54.2% 49.7% 2015 41/42 2.5 4.2 64.1% 61.4% 48.0% 52.5% 49.5% 56.7% 43.8%
29 2016 38/45 0.1 1.2 85.4% 52.9% 43.6% 51.6% 52.4% 51.5% 48.0% 2016 14/15 2.7 4.9 56.1% 61.7% 41.1% 46.8% 45.0% 52.8% 40.7%
30 2017 31/34 0.1 1.3 78.7% 52.5% 41.2% 40.6% 54.1% 50.3% 49.6% 2017 1/1 3.0 5.0 48.1% 60.0% 29.6% 58.3% 50.0% 44.2% 44.7%
31 2018 14/14 0.1 2.9 81.3% 57.5% 36.7% 41.9% 45.6% 53.8% 46.0% — —/— — — — — — — — — —
32 2019 8/8 0.1 8.0 61.0% 51.0% 28.4% 30.1% 44.3% 42.3% 46.0% — —/— — — — — — — — — —
33 2020 7/7 0.0 4.6 77.6% 54.9% 39.2% 58.2% 57.5% 51.3% 51.3% — —/— — — — — — — — — —
34 2021 19/20 0.1 2.9 78.4% 52.1% 36.1% 52.3% 55.8% 48.5% 49.7% — —/— — — — — — — — — —
35 2022 7/7 0.0 1.9 80.7% 52.1% 33.4% 39.3% 47.1% 48.4% 45.5% — —/— — — — — — — — — —
36 2023 13/13 0.0 1.5 79.1% 47.8% 31.7% 36.6% 49.8% 44.5% 41.9% — —/— — — — — — — — — —
37 2024 23/24 0.1 1.5 77.5% 52.4% 42.3% 41.1% 47.1% 49.8% 44.4% — —/— — — — — — — — — —
38 2025 2/2 0.0 1.5 82.0% 53.3% 47.6% 49.5% 75.0% 52.2% 36.8% — —/— — — — — — — — — —
Career — 593/692 0.2 1.7 77.3% 55.8% 44.9% 49.9% 51.1% 53.3% 47.9% — 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 Sara Errani 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 2006 1529 107.3 -2.72 -1.03 0.604 36.7% — +41 — 46.2% -0.39 1–0 1–0 — -0.21 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 2007 1614 121.3 -0.77 +0.04 0.953 49.0% -56 +20 — 55.0% +0.43 4–2 (67%) 3–2 (60%) 103.4 -0.20 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 2008 1735 135.4 -1.78 +1.64 0.976 49.4% -49 -6 -147 53.8% +0.34 10–7 (59%) 4–5 (44%) 102.2 -1.64 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 2009 1655 132.5 -2.62 +1.07 0.938 48.6% +1 +49 -81 50.9% +0.04 5–7 (42%) 6–3 (67%) 100.5 +0.75 2009 1556 96.3 -3.79 -1.88 0.874 46.7% +5 — — 25.0% -1.75 — 1–1 — +1.05
23 2010 1723 134.3 -2.26 +3.11 1.025 50.6% +16 -53 -104 56.5% +0.29 6–11 (35%) 12–6 (67%) 100.8 +1.24 — — — — — — — — — — — — — — — —
24 2011 1673 134.0 -0.30 +3.09 1.047 51.0% -6 +66 -54 54.0% +0.26 7–11 (39%) 5–6 (45%) 97.1 -1.90 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 2012 1898 155.0 +1.80 +6.73 1.210 54.4% -78 +149 -273 69.0% +1.52 11–5 (69%) 7–3 (70%) 107.8 -1.43 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 2013 1886 156.0 +1.16 +6.37 1.149 53.2% -27 +186 — 62.2% +0.85 10–5 (67%) 6–5 (55%) 103.2 -0.44 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 2014 1774 140.1 -1.37 +3.74 1.048 51.1% -49 +280 — 58.0% +0.40 9–10 (47%) 10–6 (63%) 95.0 +2.02 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 2015 1752 137.5 -3.26 +7.03 1.083 52.0% -25 +216 -179 58.6% +0.66 18–11 (62%) 12–6 (67%) 104.0 +3.08 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 2016 1657 128.4 -3.45 +3.74 0.989 49.8% +7 +192 -112 49.5% -0.14 5–8 (38%) 8–5 (62%) 94.9 +0.33 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 2017 1652 117.1 -4.83 +3.87 0.998 49.9% +19 +108 — 53.3% +0.13 5–4 (56%) 6–2 (75%) 103.4 +0.62 2017 1618 — -0.56 -4.07 0.802 44.4% — — — — — — — — +0.14
31 2018 1767 125.7 -0.84 +2.69 0.996 50.0% +17 -5 — 48.5% -0.21 1–4 (20%) 2–1 (67%) 96.4 -1.13 — — — — — — — — — — — — — — — —
32 2019 1575 92.5 -7.16 -0.74 0.798 44.2% — +37 — 31.6% -1.74 1–2 (33%) — — +0.92 — — — — — — — — — — — — — — — —
33 2020 1607 122.5 -2.17 +3.15 1.053 51.1% — +33 — 55.6% +0.06 2–2 (50%) 1–1 — -0.05 — — — — — — — — — — — — — — — —
34 2021 1575 114.0 -4.44 +2.94 0.966 49.1% -11 +76 — 39.5% -0.79 2–3 (40%) 1–3 (25%) 97.1 -0.94 — — — — — — — — — — — — — — — —
35 2022 1607 109.2 -3.27 +0.30 0.881 46.5% — +45 — 35.7% -0.64 1–1 0–1 — -0.07 — — — — — — — — — — — — — — — —
36 2023 1548 97.8 -6.59 -1.63 0.755 43.4% -51 +75 -7 24.1% -2.07 2–1 (67%) 0–1 — -0.14 — — — — — — — — — — — — — — — —
37 2024 1693 123.6 -4.63 +1.30 0.884 47.1% -121 +82 — 37.7% -0.94 5–0 (100%) 1–2 (33%) 106.5 -1.08 — — — — — — — — — — — — — — — —
38 2025 1590 105.5 -0.55 +0.36 0.771 45.0% — — — 20.0% -1.60 0–1 0–1 — -0.15 — — — — — — — — — — — — — — — —
Career — 2006 138.5 -1.81 +3.71 1.026 50.6% -25 +106 -122 54.6% +0.29 105–95 (53%) 85–59 (59%) 104.5 -0.06 — 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.