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

Serena Williams vs Kaia Kanepi H2H: 5-0

Serena Williams holds a 5–0 lead over Kaia Kanepi in their WTA head-to-head. Across 5 main-draw meetings, Serena Williams leads 4–0 on hard courts and 1–0 on grass. Most recently, Serena Williams won the 2018 US Open fourth round 6-0 4-6 6-3.

USA Age 44 Right-Handed 175 cm / 5'9"
H2H
5 0
5 main-draw meetings
Estonia Age 41 Right-Handed 179 cm / 5'10"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Serena Williams #26 6-0 4-6 6-3 Kaia Kanepi #44 Match data Sep 4, 2018* R16 US Open Grand Slam Hard
Serena Williams #1 6-3 6-3 Kaia Kanepi #50 Match data Sep 2, 2014* R16 US Open Grand Slam Hard
Serena Williams #2 7-5 6-4 Kaia Kanepi #56 Match data Oct 5, 2009 R64 China Open Premier Mandatory modern equivalent WTA 1000 Hard
Serena Williams #6 7-5 6-3 Kaia Kanepi #36 Match data Jun 25, 2008* R128 Wimbledon Grand Slam Grass
Serena Williams #8 6-3 6-3 Kaia Kanepi #61 Match data Mar 28, 2008* R16 Miami Open Tier I 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 Olympics 1000 including documented historical predecessor categories Finals 500 including documented historical predecessor categories 250 including documented historical predecessor categories Titles
Serena Williams #320 #1 13,615 2,399 837 172 83.0% 23 1 23 6 18 2 73
Kaia Kanepi #1,322 #15 2,760 1,908 264 236 52.8% 0 0 0 0 2 2 4

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 Serena Williams Kaia Kanepi
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
15 1997 3–2 60.0% #101 1,582 0 0
16 1998 26–11 70.3% #20 1,893 0 0 2001 0–1 0.0% #200 1,496 0 0
17 1999 38–7 84.4% #4 2,189 1 5 2002 2–3 40.0% #285 1,498 0 0
18 2000 37–8 82.2% #6 2,184 1 8
19 2001 40–7 85.1% #6 2,237 1 11 2004 0–1 0.0% #229 1,484 0 0
20 2002 57–5 91.9% #1 2,339 4 19 2005 3–2 60.0% #98 1,527 0 0
21 2003 36–3 92.3% #3 2,365 6 23 2006 14–16 46.7% #78 1,606 0 0
22 2004 39–11 78.0% #7 2,225 6 25 2007 13–17 43.3% #75 1,581 0 0
23 2005 21–9 70.0% #11 2,101 7 26 2008 30–21 58.8% #27 1,761 0 0
24 2006 12–4 75.0% #95 2,063 7 26 2009 15–21 41.7% #58 1,603 0 0
25 2007 34–10 77.3% #7 2,077 8 28 2010 29–17 63.0% #22 1,842 0 1
26 2008 44–9 83.0% #2 2,126 9 32 2011 19–17 52.8% #34 1,798 0 1
27 2009 50–13 79.4% #1 2,120 11 35 2012 25–9 73.5% #19 1,861 0 3
28 2010 25–4 86.2% #4 2,158 13 37 2013 21–10 67.7% #30 1,838 0 4
29 2011 22–4 84.6% #12 2,182 13 39 2014 17–19 47.2% #51 1,719 0 4
30 2012 54–6 90.0% #3 2,302 15 46 2015 8–12 40.0% #122 1,659 0 4
31 2013 77–5 93.9% #1 2,382 17 57 2016 0–1 0.0% #376 1,663 0 4
32 2014 52–10 83.9% #1 2,272 18 64 2017 4–2 66.7% #100 1,731 0 4
33 2015 50–6 89.3% #1 2,292 21 69 2018 12–12 50.0% #61 1,776 0 4
34 2016 38–6 86.4% #2 2,208 22 71 2019 9–9 50.0% #101 1,761 0 4
35 2017 8–1 88.9% #22 2,200 23 72 2020 2–3 40.0% #93 1,729 0 4
36 2018 18–7 72.0% #16 2,112 23 72 2021 11–12 47.8% #73 1,699 0 4
37 2019 25–8 75.8% #10 2,093 23 72 2022 24–16 60.0% #32 1,802 0 4
38 2020 16–5 76.2% #11 2,045 23 73 2023 6–15 28.6% #168 1,627 0 4
39 2021 12–6 66.7% #41 1,994 23 73
40 2022 3–4 42.9% #320 1,926 23 73
44 2026 0–1 0.0% #320 1,899 23 73

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 Serena Williams Kaia Kanepi
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 %
15 1997 3 2 5 60.0%
16 1998 16 7 23 69.6% 6 2 8 75.0% 4 2 6 66.7% 2001 0 1 1 0.0%
17 1999 27 4 31 87.1% 6 3 9 66.7% 5 0 5 100.0% 2002 2 3 5 40.0%
18 2000 29 5 34 85.3% 0 1 1 0.0% 5 1 6 83.3% 3 1 4 75.0%
19 2001 32 5 37 86.5% 4 1 5 80.0% 4 1 5 80.0% 2004 0 1 1 0.0%
20 2002 28 3 31 90.3% 18 2 20 90.0% 7 0 7 100.0% 4 0 4 100.0% 2005 3 2 5 60.0%
21 2003 13 0 13 100.0% 12 3 15 80.0% 7 0 7 100.0% 4 0 4 100.0% 2006 8 8 16 50.0% 6 7 13 46.2% 0 1 1 0.0%
22 2004 23 6 29 79.3% 10 4 14 71.4% 6 1 7 85.7% 2007 4 6 10 40.0% 8 9 17 47.1% 1 2 3 33.3%
23 2005 16 5 21 76.2% 2 2 4 50.0% 2 1 3 66.7% 1 1 2 50.0% 2008 19 12 31 61.3% 11 7 18 61.1% 0 2 2 0.0%
24 2006 12 4 16 75.0% 2009 9 13 22 40.9% 5 6 11 45.5% 0 1 1 0.0% 1 1 2 50.0%
25 2007 24 6 30 80.0% 6 3 9 66.7% 4 1 5 80.0% 2010 15 12 27 55.6% 7 3 10 70.0% 7 2 9 77.8%
26 2008 27 5 32 84.4% 11 3 14 78.6% 6 1 7 85.7% 2011 14 9 23 60.9% 2 4 6 33.3% 0 3 3 0.0% 3 1 4 75.0%
27 2009 36 8 44 81.8% 4 4 8 50.0% 7 0 7 100.0% 3 1 4 75.0% 2012 13 6 19 68.4% 12 3 15 80.0%
28 2010 10 1 11 90.9% 8 3 11 72.7% 7 0 7 100.0% 2013 3 3 6 50.0% 14 5 19 73.7% 4 2 6 66.7%
29 2011 18 2 20 90.0% 4 2 6 66.7% 2014 12 12 24 50.0% 4 5 9 44.4% 1 2 3 33.3%
30 2012 26 4 30 86.7% 15 2 17 88.2% 13 0 13 100.0% 2015 7 8 15 46.7% 1 3 4 25.0% 0 1 1 0.0%
31 2013 46 4 50 92.0% 28 0 28 100.0% 3 1 4 75.0% 2016 0 1 1 0.0%
32 2014 41 6 47 87.2% 9 3 12 75.0% 2 1 3 66.7% 2017 4 2 6 66.7%
33 2015 30 3 33 90.9% 13 3 16 81.3% 7 0 7 100.0% 2018 9 6 15 60.0% 2 4 6 33.3% 1 2 3 33.3%
34 2016 20 5 25 80.0% 11 1 12 91.7% 7 0 7 100.0% 2019 3 6 9 33.3% 5 2 7 71.4% 1 1 2 50.0%
35 2017 8 1 9 88.9% 2020 1 2 3 33.3% 1 1 2 50.0%
36 2018 9 5 14 64.3% 3 1 4 75.0% 6 1 7 85.7% 2021 10 8 18 55.6% 1 3 4 25.0% 0 1 1 0.0%
37 2019 16 5 21 76.2% 3 2 5 60.0% 6 1 7 85.7% 2022 18 10 28 64.3% 5 3 8 62.5% 1 3 4 25.0%
38 2020 15 4 19 78.9% 1 1 2 50.0% 2023 4 8 12 33.3% 2 6 8 25.0% 0 1 1 0.0%
39 2021 8 2 10 80.0% 4 3 7 57.1% 0 1 1 0.0%
40 2022 3 3 6 50.0% 0 1 1 0.0%
44 2026 0 1 1 0.0%
Career 533 103 636 83.8% 174 47 221 78.7% 107 17 124 86.3% 23 5 28 82.1% 156 134 290 53.8% 88 76 164 53.7% 16 24 40 40.0% 4 2 6 66.7%

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 633/768 of Serena Williams's and 427/488 of Kaia Kanepi'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 Serena Williams Kaia Kanepi
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%
21 2003 13/39 3.9 2.1 61.7% 74.0% 52.8% 63.9% 58.8% 66.1% 51.8% 2006 5/30 3.2 3.6 50.1% 63.5% 51.7% 55.9% 43.1% 57.7% 43.7%
22 2004 16/50 6.4 2.6 61.3% 73.3% 51.5% 64.8% 54.6% 64.9% 49.7% 2007 21/30 3.0 7.0 57.0% 65.6% 38.7% 49.4% 52.0% 54.0% 42.6%
23 2005 14/30 5.9 2.6 61.2% 74.1% 52.5% 68.0% 48.3% 65.1% 47.5% 2008 37/51 2.4 5.1 58.3% 64.6% 45.9% 53.8% 50.1% 56.9% 45.8%
24 2006 15/16 6.3 2.9 59.3% 74.2% 47.4% 54.7% 58.2% 63.1% 46.9% 2009 35/36 3.1 5.3 52.3% 64.9% 42.8% 47.9% 52.3% 54.2% 43.8%
25 2007 42/44 6.1 2.6 59.4% 69.2% 48.1% 58.2% 57.3% 60.8% 46.0% 2010 42/46 3.7 5.1 59.4% 68.5% 44.9% 53.1% 44.3% 59.0% 47.2%
26 2008 44/53 6.8 2.7 61.4% 73.4% 45.2% 60.0% 47.6% 62.7% 47.7% 2011 35/36 4.4 4.3 57.1% 67.9% 44.3% 58.6% 44.1% 57.8% 44.4%
27 2009 57/63 6.2 2.8 60.8% 75.0% 50.7% 54.5% 48.2% 65.3% 46.2% 2012 34/34 4.0 4.7 57.0% 70.7% 48.0% 55.5% 51.0% 61.0% 47.8%
28 2010 29/29 8.6 2.9 62.3% 77.4% 47.5% 66.0% 51.5% 66.4% 46.8% 2013 30/31 4.1 4.5 55.7% 69.5% 47.3% 59.5% 45.7% 59.5% 43.9%
29 2011 25/26 8.0 2.5 59.0% 79.5% 53.0% 67.2% 50.8% 68.7% 46.9% 2014 36/36 4.1 5.5 55.7% 65.5% 43.2% 50.9% 45.3% 55.4% 43.2%
30 2012 48/60 8.2 2.3 59.0% 78.7% 54.8% 66.6% 53.2% 68.8% 49.8% 2015 18/20 3.5 4.7 55.8% 66.6% 45.7% 55.4% 59.7% 57.3% 41.0%
31 2013 74/82 6.1 2.2 63.0% 76.5% 53.5% 60.3% 56.0% 68.1% 52.4% 2016 1/1 1.0 4.0 65.3% 65.6% 11.8% 16.7% 100.0% 46.9% 38.7%
32 2014 56/62 7.7 3.5 59.3% 76.5% 51.6% 64.4% 52.8% 66.3% 48.9% 2017 6/6 2.0 2.7 71.5% 61.5% 44.5% 61.3% 43.3% 56.5% 42.1%
33 2015 50/56 9.5 3.5 59.9% 76.7% 55.9% 67.3% 54.5% 68.4% 47.8% 2018 22/24 2.6 4.5 59.6% 64.2% 47.7% 53.3% 45.4% 57.7% 44.9%
34 2016 41/44 7.9 2.8 62.3% 77.4% 51.9% 58.8% 50.6% 68.0% 49.0% 2019 18/18 3.5 4.7 58.4% 66.1% 42.5% 47.5% 39.9% 56.0% 44.6%
35 2017 9/9 7.9 3.9 55.9% 79.6% 46.7% 57.9% 51.3% 65.7% 46.5% 2020 5/5 3.6 3.2 58.7% 62.0% 47.8% 41.4% 49.8% 56.5% 45.3%
36 2018 24/25 7.1 3.4 59.2% 74.2% 48.5% 55.3% 51.9% 63.9% 44.0% 2021 22/23 3.7 4.6 51.7% 65.7% 46.8% 49.5% 54.1% 56.4% 41.5%
37 2019 31/33 6.6 2.8 59.2% 76.5% 50.4% 50.4% 45.6% 65.5% 46.7% 2022 39/40 4.6 3.7 55.9% 68.5% 49.0% 49.4% 45.1% 59.7% 43.1%
38 2020 20/21 8.9 2.7 61.3% 73.3% 50.7% 71.0% 49.7% 64.3% 44.9% 2023 21/21 2.5 3.1 57.0% 66.2% 46.9% 46.5% 42.8% 57.7% 40.7%
39 2021 17/18 5.1 2.6 57.4% 72.6% 48.9% 43.6% 49.4% 62.4% 46.2% —/—
40 2022 7/7 8.0 4.7 65.0% 68.0% 35.4% 62.0% 45.8% 56.6% 40.5% —/—
44 2026 1/1 7.0 7.0 79.0% 62.7% 45.0% 54.6% 27.3% 59.0% 38.2% —/—
Career 633/1,009 7.2 2.8 60.6% 75.5% 50.9% 60.9% 52.1% 65.8% 48.0% 427/500 3.6 4.7 56.7% 66.8% 45.4% 52.4% 47.7% 57.5% 44.2%

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 Serena Williams Kaia Kanepi
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
15 1997 1582 144.0 +42 54.5% +0.82 1–0 1–1 -0.18
16 1998 1893 158.1 -62 -201 -189 64.6% +1.29 8–5 (62%) 2–3 (40%) 106.2 -1.19 2001 1497 105.2 0.0% -2.50 -0.28
17 1999 2189 178.2 +12 -418 80.2% +2.10 8–5 (62%) 6–0 (100%) 108.5 -2.69 2002 1498 103.4 +23 40.0% -0.90 +0.03
18 2000 2185 168.9 +24 -372 80.6% +2.43 6–1 (86%) 4–3 (57%) 102.2 +0.57
19 2001 2238 172.8 +36 -434 -326 79.2% +2.45 7–4 (64%) 5–5 (50%) 100.5 -2.79 2004 1485 98.6 0.0% -3.00 0–1 +0.19
20 2002 2339 173.4 +18 -278 -232 87.1% +2.70 9–3 (75%) 11–1 (92%) 111.5 -2.86 2005 1527 114.1 +28 54.5% +0.18 1–0 2–1 (67%) -0.08
21 2003 2365 170.4 +7.11 +5.95 1.527 58.7% +80 -218 -130 86.0% +2.74 6–2 (75%) 2–0 -1.67 2006 1607 113.9 +0.07 -1.13 1.033 50.5% +4 -62 47.9% -0.39 5–6 (45%) 3–2 (60%) 100.1 +0.19
22 2004 2226 163.6 +6.68 +4.43 1.416 56.9% +107 -101 +86 74.8% +1.90 9–4 (69%) 4–3 (57%) 96.9 -0.38 2007 1581 120.1 -1.50 -0.76 0.926 48.4% +17 +20 -16 46.5% -0.18 4–7 (36%) 3–4 (43%) 96.3 +0.10
23 2005 2101 150.6 +5.70 +2.41 1.360 56.0% +157 -3 +122 70.0% +1.48 8–0 (100%) 1–6 (14%) 99.2 -0.26 2008 1761 142.2 +1.74 +1.87 1.063 51.4% -2 -50 55.6% +0.40 13–9 (59%) 9–4 (69%) 107.7 +0.04
24 2006 2064 147.1 +4.12 +2.38 1.272 54.9% +120 69.4% +1.75 3–1 (75%) 0–3 (0%) 96.2 -0.43 2009 1604 134.2 -0.69 +1.03 0.958 49.2% +69 +58 45.0% -0.20 4–8 (33%) 0–7 (0%) 89.0 +0.79
25 2007 2077 165.4 +4.80 +3.80 1.173 53.4% +88 +12 +155 78.3% +1.84 6–4 (60%) 9–3 (75%) 101.7 -2.31 2010 1842 146.9 +2.60 +3.18 1.151 53.0% -58 -100 -165 63.4% +0.93 3–8 (27%) 9–3 (75%) 101.4 -1.00
26 2008 2126 164.9 +6.89 +4.29 1.280 55.0% +42 -33 +130 80.0% +2.11 9–4 (69%) 5–2 (71%) 102.9 -1.00 2011 1799 142.9 +1.95 +1.23 1.051 51.0% +49 -115 -218 50.6% +0.20 8–7 (53%) 3–6 (33%) 97.9 +0.49
27 2009 2120 165.8 +9.20 +3.92 1.332 55.3% +59 -117 +157 75.6% +1.76 11–6 (65%) 8–8 (50%) 98.1 -2.33 2012 1862 140.4 +3.77 +2.86 1.226 54.3% -34 -10 67.5% +1.30 7–2 (78%) 3–2 (60%) 104.5 +0.29
28 2010 2159 157.0 +8.78 +3.86 1.393 56.1% +37 -163 +212 79.1% +2.01 6–3 (67%) 10–2 (83%) 106.5 -1.14 2013 1838 132.3 +2.40 +0.55 1.085 51.8% -37 +75 -164 62.9% +0.74 6–2 (75%) 7–2 (78%) 106.6 +0.19
29 2011 2182 160.3 +9.93 +4.56 1.499 57.5% +57 +125 78.9% +2.33 6–1 (86%) 3–2 (60%) 101.2 -0.27 2014 1719 134.8 +0.25 +0.12 0.969 49.5% +38 +81 -56 48.9% -0.16 7–9 (44%) 9–4 (69%) 97.8 -0.89
30 2012 2302 168.5 +11.57 +6.33 1.597 58.7% -26 -157 +62 88.2% +2.98 6–1 (86%) 3–2 (60%) 103.3 -2.18 2015 1659 126.5 -0.20 +0.50 0.961 49.3% +51 +100 47.5% -0.15 1–3 (25%) 1–0 -0.35
31 2013 2383 177.8 +12.05 +8.21 1.643 59.9% -2 -40 +41 89.7% +3.22 10–4 (71%) 3–3 (50%) 101.0 -0.69 2016 1663 113.1 +1.02 -0.64 0.730 42.3% 0.0% -3.50 -0.02
32 2014 2273 171.7 +9.98 +6.05 1.454 57.3% +55 +1 +33 83.6% +2.37 7–3 (70%) 8–0 (100%) 102.4 -0.53 2017 1732 125.4 -0.85 +0.35 0.969 49.3% +33 57.1% -0.14 2–0 +0.38
33 2015 2293 165.1 +9.57 +5.97 1.514 57.9% +37 -12 +16 81.3% +2.24 17–2 (89%) 7–2 (78%) 105.8 -0.61 2018 1777 140.3 +1.23 +0.94 1.059 51.2% +67 -33 -156 54.7% +0.21 2–5 (29%) 1–3 (25%) 93.5 -0.34
34 2016 2208 161.7 +10.55 +5.23 1.529 57.9% +31 +121 +136 83.0% +2.39 4–2 (67%) 8–2 (80%) 100.3 -0.68 2019 1762 130.8 -0.84 +2.11 1.014 50.2% +14 +32 48.9% 0.00 5–4 (56%) 3–2 (60%) 102.0 -0.46
35 2017 2201 137.8 +4.47 +1.79 1.354 56.0% +39 89.5% +2.32 0–1 1–0 -0.09 2020 1729 113.7 +0.66 +1.49 1.042 51.0% +2 41.7% +0.17 1–1 0–2 -0.21
36 2018 2112 148.0 +5.23 +2.07 1.220 53.7% +22 +268 +229 71.2% +1.29 3–1 (75%) 3–0 (100%) 102.0 -0.74 2021 1700 135.8 +0.07 -0.08 0.950 49.1% +53 +14 44.0% -0.34 4–2 (67%) 2–5 (29%) 99.7 -1.55
37 2019 2094 156.8 +7.34 +3.63 1.352 55.6% +42 +282 +271 77.3% +2.05 7–1 (88%) -0.12 2022 1802 144.9 +2.41 +0.90 1.071 51.2% +48 +6 -236 54.7% +0.25 11–8 (58%) 6–7 (46%) 100.8 -0.84
38 2020 2046 143.2 +4.70 +1.29 1.259 54.8% +19 70.6% +1.55 7–4 (64%) 4–3 (57%) 97.0 +0.57 2023 1627 124.3 +1.07 -1.99 0.962 49.0% +69 +54 38.0% -0.72 1–7 (13%) 2–8 (20%) 87.2 -0.08
39 2021 1994 145.6 +4.15 +2.90 1.229 53.9% +132 +333 68.6% +1.54 3–0 (100%) 2–2 (50%) 101.9 -0.19
40 2022 1926 119.5 +0.06 -0.90 0.934 48.7% +144 47.1% -0.35 1–2 (33%) 2–1 (67%) +0.04
44 2026 1899 96.8 +0.10 -3.44 0.931 47.3% 33.3% -1.67 0–1 1–0 +0.12
Career 2399 174.5 +8.45 +4.77 1.403 56.6% +43 -85 +34 79.6% +2.21 168–65 (72%) 113–57 (66%) 110.8 -2.44 1909 143.0 +1.22 +1.05 1.039 50.8% +24 +4 -153 52.4% +0.17 85–88 (49%) 63–63 (50%) 96.4 -0.69

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.