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

Coco Vandeweghe vs Kristie Ahn H2H: 1-0

Coco Vandeweghe holds a 1–0 lead over Kristie Ahn in their WTA head-to-head. Across 1 main-draw meeting, Coco Vandeweghe leads 1–0 on hard courts. Most recently, Coco Vandeweghe won the 2014 Stanford round of 32 6-2 7-5.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Coco Vandeweghe
USA Age 34 Right-Handed 185 cm / 6'1"
H2H
1 – 0
1 main-draw meetings
Kristie Ahn
United States Age 34 Right-Handed 165 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Coco Vandeweghe #48 6-2 7-5 Kristie Ahn #912 Match data Jul 31, 2014* R32 Stanford Premier → modern equivalent WTA 500 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
Coco Vandeweghe #815 #9 3,258 1,880 138 152 47.6% 0 0 0 0 2 2
Kristie Ahn #1,053 #87 745 1,707 16 29 35.6% 0 0 0 0 0 0

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 Coco Vandeweghe Kristie Ahn
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
14 2006 0–1 0.0% — 1,484 0 0 — — — — — — —
15 2007 0–1 0.0% #549 1,479 0 0 — — — — — — —
16 2008 0–3 0.0% #476 1,453 0 0 2008 0–1 0.0% #451 1,498 0 0
17 2009 1–2 33.3% #322 1,465 0 0 — — — — — — —
18 2010 6–6 50.0% #116 1,567 0 0 — — — — — — —
19 2011 8–13 38.1% #122 1,543 0 0 — — — — — — —
20 2012 6–7 46.2% #97 1,605 0 0 — — — — — — —
21 2013 5–11 31.2% #113 1,563 0 0 — — — — — — —
22 2014 22–14 61.1% #39 1,731 0 1 2014 0–1 0.0% #637 1,492 0 0
23 2015 20–21 48.8% #37 1,726 0 1 — — — — — — —
24 2016 22–18 55.0% #36 1,732 0 2 — — — — — — —
25 2017 29–18 61.7% #10 1,858 0 2 2017 4–5 44.4% #112 1,533 0 0
26 2018 9–16 36.0% #100 1,690 0 2 2018 1–6 14.3% #200 1,585 0 0
27 2019 1–3 25.0% #241 1,689 0 2 2019 9–7 56.2% #94 1,659 0 0
28 2020 0–2 0.0% #214 1,624 0 2 2020 0–5 0.0% #108 1,630 0 0
29 2021 4–9 30.8% #174 1,591 0 2 2021 2–4 33.3% #259 1,540 0 0
30 2022 4–5 44.4% #128 1,666 0 2 — — — — — — —
31 2023 1–2 33.3% #420 1,533 0 2 — — — — — — —

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 Coco Vandeweghe Kristie Ahn
Yr HardClayGrass Yr HardClayGrass
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
14 2006 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
15 2007 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
16 2008 0 3 3 0.0% — — — — — — — — 2008 0 1 1 0.0% — — — — — — — —
17 2009 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
18 2010 6 6 12 50.0% — — — — — — — — — — — — — — — — — — — — —
19 2011 7 9 16 43.8% 0 2 2 0.0% 1 2 3 33.3% — — — — — — — — — — — — —
20 2012 6 6 12 50.0% — — — — 0 1 1 0.0% — — — — — — — — — — — — —
21 2013 5 7 12 41.7% 0 2 2 0.0% 0 2 2 0.0% — — — — — — — — — — — — —
22 2014 13 11 24 54.2% 1 1 2 50.0% 8 2 10 80.0% 2014 0 1 1 0.0% — — — — — — — —
23 2015 10 13 23 43.5% 2 4 6 33.3% 8 4 12 66.7% — — — — — — — — — — — — —
24 2016 10 13 23 43.5% 1 3 4 25.0% 11 2 13 84.6% — — — — — — — — — — — — —
25 2017 19 12 31 61.3% 4 3 7 57.1% 6 3 9 66.7% 2017 2 4 6 33.3% — — — — 2 1 3 66.7%
26 2018 1 9 10 10.0% 5 4 9 55.6% 3 3 6 50.0% 2018 0 4 4 0.0% 1 1 2 50.0% 0 1 1 0.0%
27 2019 1 3 4 25.0% — — — — — — — — 2019 8 5 13 61.5% 1 1 2 50.0% 0 1 1 0.0%
28 2020 0 2 2 0.0% — — — — — — — — 2020 0 4 4 0.0% 0 1 1 0.0% — — — —
29 2021 0 5 5 0.0% 0 1 1 0.0% 4 3 7 57.1% 2021 — — — — 0 2 2 0.0% 2 2 4 50.0%
30 2022 1 2 3 33.3% 3 1 4 75.0% 0 2 2 0.0% — — — — — — — — — — — — —
31 2023 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
Career — 81 107 188 43.1% 16 21 37 43.2% 41 24 65 63.1% — 10 19 29 34.5% 2 5 7 28.6% 4 5 9 44.4%

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 279/290 of Coco Vandeweghe's and 44/45 of Kristie Ahn'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 Coco Vandeweghe Kristie Ahn
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%
14 2006 1/1 2.0 2.0 40.4% 69.6% 38.2% 50.0% 100.0% 50.9% 26.1% — —/— — — — — — — — — —
15 2007 1/1 7.0 7.0 53.2% 75.8% 41.4% 62.5% 16.7% 59.7% 30.9% — —/— — — — — — — — — —
16 2008 3/3 1.3 2.3 58.0% 53.2% 40.3% 36.1% 50.7% 47.4% 37.5% 2008 1/1 1.0 1.0 70.6% 66.7% 33.3% 40.0% 11.1% 56.9% 34.2%
17 2009 3/3 3.7 0.0 64.6% 54.3% 58.5% 52.3% 36.7% 55.8% 36.4% — —/— — — — — — — — — —
18 2010 11/12 4.5 5.5 58.9% 63.3% 38.8% 49.9% 47.6% 53.0% 42.0% — —/— — — — — — — — — —
19 2011 21/21 3.9 5.3 52.3% 64.7% 44.8% 49.5% 41.2% 55.2% 39.7% — —/— — — — — — — — — —
20 2012 12/13 5.7 5.1 48.8% 74.1% 45.6% 66.1% 63.0% 59.6% 40.2% — —/— — — — — — — — — —
21 2013 16/16 5.8 4.9 49.7% 68.0% 46.7% 50.2% 43.9% 56.9% 41.9% — —/— — — — — — — — — —
22 2014 36/36 8.5 4.6 53.3% 76.0% 47.8% 52.7% 45.7% 62.8% 40.3% 2014 1/1 1.0 2.0 67.7% 66.7% 30.0% 33.3% 33.3% 54.8% 32.2%
23 2015 34/41 6.8 3.6 54.9% 70.6% 56.0% 60.3% 42.3% 63.9% 37.0% — —/— — — — — — — — — —
24 2016 38/40 5.9 3.7 54.7% 72.8% 49.4% 54.0% 45.2% 62.3% 41.9% — —/— — — — — — — — — —
25 2017 47/47 5.3 4.3 54.7% 74.4% 50.5% 61.6% 43.8% 63.6% 41.3% 2017 9/9 1.3 2.3 64.6% 64.9% 53.3% 55.4% 45.8% 61.2% 45.4%
26 2018 25/25 5.9 5.2 54.5% 69.3% 46.5% 55.0% 43.6% 59.1% 38.2% 2018 6/7 1.2 2.7 66.1% 57.2% 42.7% 55.1% 50.9% 52.1% 37.9%
27 2019 4/4 3.5 5.0 45.4% 65.4% 40.8% 48.8% 24.6% 52.3% 35.4% 2019 16/16 1.1 2.6 60.0% 59.4% 48.8% 51.6% 46.9% 55.8% 42.4%
28 2020 2/2 6.0 7.0 55.9% 70.7% 37.8% 64.6% 22.2% 56.1% 36.7% 2020 5/5 1.2 3.6 58.0% 56.7% 42.8% 52.9% 55.6% 50.7% 35.1%
29 2021 13/13 5.8 4.9 55.2% 66.9% 45.9% 39.1% 44.7% 57.6% 37.4% 2021 6/6 1.0 1.8 62.3% 59.0% 38.9% 44.2% 32.0% 50.4% 39.1%
30 2022 9/9 6.0 4.4 50.7% 69.4% 45.3% 48.0% 40.8% 57.5% 35.7% — —/— — — — — — — — — —
31 2023 3/3 7.3 6.3 49.4% 66.2% 41.4% 41.5% 20.1% 53.6% 32.8% — —/— — — — — — — — — —
Career — 279/290 5.9 4.5 53.8% 70.7% 48.2% 54.6% 44.2% 60.2% 39.6% — 44/45 1.2 2.5 62.3% 60.2% 46.1% 51.3% 45.1% 55.1% 40.7%

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 Coco Vandeweghe Kristie Ahn
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
14 2006 1485 98.4 -1.31 -2.15 0.531 39.8% — — — 0.0% -3.00 — — — +0.21 — — — — — — — — — — — — — — — —
15 2007 1480 104.6 -2.63 -2.18 0.766 44.6% — — — 0.0% -2.50 — — — -0.09 — — — — — — — — — — — — — — — —
16 2008 1453 104.3 +0.09 -1.10 0.713 42.8% +20 — — 0.0% -3.00 — — — -0.14 2008 1499 109.2 +3.29 +3.17 0.794 43.5% — — — 0.0% -2.50 — — — -0.27
17 2009 1466 104.1 +1.17 -2.23 0.824 46.3% +13 — — 33.3% -1.83 — — — -0.10 — — — — — — — — — — — — — — — —
18 2010 1567 119.9 -0.34 -0.02 0.895 47.8% +7 — — 45.8% -0.83 1–1 1–1 — +0.28 — — — — — — — — — — — — — — — —
19 2011 1543 108.2 -1.37 -3.03 0.887 47.8% +26 — +40 34.8% -0.78 4–0 (100%) 1–5 (17%) 102.6 +1.49 — — — — — — — — — — — — — — — —
20 2012 1605 131.1 +3.23 -0.27 0.996 49.9% +24 — — 48.3% -0.10 1–2 (33%) 0–1 — -0.31 — — — — — — — — — — — — — — — —
21 2013 1563 120.9 +0.40 -1.77 0.973 49.4% +55 — — 37.8% -0.43 1–4 (20%) 2–4 (33%) 95.2 +0.12 — — — — — — — — — — — — — — — —
22 2014 1731 138.8 +5.61 -2.20 1.082 51.2% -19 — -18 55.7% +0.23 7–4 (64%) 7–6 (54%) 106.7 -0.26 2014 1492 101.3 -2.84 +4.06 0.713 43.8% — — — 0.0% -3.00 — — — -0.03
23 2015 1726 124.1 +4.83 -2.53 1.026 50.3% -38 -235 +47 51.1% -0.08 8–6 (57%) 10–3 (77%) 107.1 -1.43 — — — — — — — — — — — — — — — —
24 2016 1733 136.0 +5.07 -0.74 1.111 51.7% -68 -242 +155 56.2% +0.31 5–6 (45%) 5–4 (56%) 100.7 -0.72 — — — — — — — — — — — — — — — —
25 2017 1859 148.2 +6.32 -0.55 1.133 51.9% -29 -280 +61 60.0% +0.45 6–6 (50%) 11–2 (85%) 108.7 -1.00 2017 1534 111.8 +1.76 +0.63 1.170 52.8% -45 — +139 50.0% +0.30 0–2 0–1 — -0.16
26 2018 1691 124.0 +2.04 -2.71 0.932 48.6% -31 -30 +160 43.4% -0.55 2–5 (29%) 6–5 (55%) 95.6 -0.76 2018 1586 117.3 -2.65 -0.75 0.791 45.2% -17 — — 20.0% -2.00 0–1 0–1 — -0.25
27 2019 1690 112.5 -0.39 -0.74 0.742 44.1% -7 — — 25.0% -1.63 — 0–1 — -0.01 2019 1660 125.1 +0.04 -0.01 0.959 49.4% +2 — — 54.1% -0.08 3–2 (60%) 4–1 (80%) 103.9 +0.11
28 2020 1624 102.4 -0.35 -1.49 0.835 46.5% — — — 20.0% -1.80 0–1 — — -0.12 2020 1631 119.9 -0.89 -0.51 0.713 43.5% +10 — — 0.0% -3.38 — 0–1 — -0.86
29 2021 1591 99.2 -0.08 -3.74 0.881 47.2% -64 — +332 34.5% -1.10 1–2 (33%) 2–3 (40%) 96.4 +0.17 2021 1541 97.1 -2.88 -3.00 0.788 44.6% — — +113 33.3% -1.50 2–0 1–1 — +0.39
30 2022 1667 108.1 +0.32 -2.42 0.840 46.3% -63 +2 — 36.4% -0.96 4–0 (100%) 0–1 — +0.03 — — — — — — — — — — — — — — — —
31 2023 1534 102.7 -1.75 -2.65 0.707 43.4% -15 — — 28.6% -1.72 1–0 1–1 — -0.10 — — — — — — — — — — — — — — — —
Career — 1880 132.9 +3.27 -1.72 0.995 49.7% -17 -153 +106 47.8% -0.23 41–37 (53%) 46–37 (55%) 106.9 -0.94 — 1708 120.6 -0.47 -0.28 0.906 48.0% -10 — +124 38.5% -0.86 5–5 (50%) 5–5 (50%) 101.2 -2.38

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.