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

Julia Vakulenko vs Amber Liu H2H: 1-0

Julia Vakulenko holds a 1–0 lead over Amber Liu in their WTA head-to-head. Across 1 main-draw meeting, Julia Vakulenko leads 1–0 on hard courts. Most recently, Julia Vakulenko won the 2004 US Open round of 128 3-6 6-3 6-1.

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

Julia Vakulenko
UKR Age 43 Right-Handed 183 cm / 6'0"
H2H
1 – 0
1 main-draw meetings
Amber Liu
USA Age 42 Right-Handed 170 cm / 5'7"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Julia Vakulenko #105 3-6 6-3 6-1 Amber Liu #429 Match data Sep 1, 2004* R128 US Open Grand Slam 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
Julia Vakulenko #979 #31 916 1,730 51 76 40.2% 0 0 0 0 0 0
Amber Liu #1,089 #241 111 1,503 2 10 16.7% 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 Julia Vakulenko Amber Liu
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 2001 0–1 0.0% — 1,482 0 0
17 2001 2–5 28.6% #132 1,492 0 0 — — — — — — —
18 2002 1–5 16.7% #132 1,468 0 0 2003 1–2 33.3% #258 1,502 0 0
19 2003 4–8 33.3% #94 1,502 0 0 2004 0–3 0.0% #607 1,468 0 0
20 2004 10–18 35.7% #130 1,476 0 0 — — — — — — —
21 2005 3–3 50.0% #185 1,522 0 0 2006 0–1 0.0% #583 1,464 0 0
22 2006 6–5 54.5% #120 1,587 0 0 2007 0–1 0.0% #303 1,456 0 0
23 2007 22–19 53.7% #32 1,724 0 0 2008 1–2 33.3% #477 1,458 0 0
24 2008 3–12 20.0% #354 1,568 0 0 — — — — — — —
25 2009 0–1 0.0% #156 1,554 0 0 — — — — — — —

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 Julia Vakulenko Amber Liu
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 — — — — — — — — — — — — — — — — — 2001 0 1 1 0.0% — — — — — — — — — — — —
17 2001 1 1 2 50.0% 1 4 5 20.0% — — — — — — — — — — — — — — — — — — — — — — — — —
18 2002 0 1 1 0.0% 1 4 5 20.0% — — — — — — — — 2003 1 2 3 33.3% — — — — — — — — — — — —
19 2003 1 5 6 16.7% 3 2 5 60.0% 0 1 1 0.0% — — — — 2004 0 3 3 0.0% — — — — — — — — — — — —
20 2004 6 8 14 42.9% 4 7 11 36.4% 0 2 2 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
21 2005 — — — — 2 2 4 50.0% 1 1 2 50.0% — — — — 2006 0 1 1 0.0% — — — — — — — — — — — —
22 2006 — — — — 6 4 10 60.0% 0 1 1 0.0% — — — — 2007 0 1 1 0.0% — — — — — — — — — — — —
23 2007 13 12 25 52.0% 7 5 12 58.3% 2 2 4 50.0% — — — — 2008 1 2 3 33.3% — — — — — — — — — — — —
24 2008 2 5 7 28.6% 1 6 7 14.3% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
25 2009 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 23 32 55 41.8% 25 35 60 41.7% 3 8 11 27.3% 0 1 1 0.0% — 2 10 12 16.7% — — — — — — — — — — — —

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 72/114 of Julia Vakulenko's and 5/10 of Amber Liu'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 Julia Vakulenko Amber Liu
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%
18 — —/— — — — — — — — — — 2003 1/3 1.0 3.0 64.8% 51.4% 47.4% 33.3% 25.0% 50.0% 23.9%
19 2003 6/12 2.5 4.2 54.3% 69.0% 45.8% 57.4% 47.1% 58.3% 39.6% 2004 1/3 0.0 5.0 54.7% 63.4% 44.1% 33.3% 30.0% 54.7% 40.3%
20 2004 5/28 3.6 4.6 61.4% 68.3% 34.5% 44.4% 54.5% 54.6% 42.8% — —/— — — — — — — — — —
21 2005 4/6 3.8 3.8 65.7% 71.7% 40.8% 64.6% 45.8% 61.0% 40.4% — —/— — — — — — — — — —
22 2006 9/11 1.6 2.8 63.2% 59.1% 49.8% 43.3% 54.3% 55.0% 49.7% 2007 1/1 3.0 2.0 59.8% 62.1% 30.8% 38.5% 35.7% 49.5% 40.5%
23 2007 35/41 3.7 4.0 60.3% 65.0% 43.7% 49.6% 45.9% 56.1% 45.6% 2008 2/3 0.0 0.0 62.7% 48.0% 49.5% 54.2% 62.5% 49.2% 34.4%
24 2008 12/15 2.3 4.8 52.6% 61.4% 37.3% 49.5% 37.6% 49.5% 38.1% — —/— — — — — — — — — —
25 2009 1/1 1.0 3.0 63.6% 52.4% 41.7% 33.3% 20.0% 48.5% 36.7% — —/— — — — — — — — — —
Career — 72/127 3.1 4.0 59.3% 64.4% 42.7% 49.7% 45.9% 55.1% 43.8% — 5/12 0.8 2.0 60.9% 54.6% 44.3% 42.7% 43.1% 50.5% 34.7%

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 Julia Vakulenko Amber Liu
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 — — — — — — — — — — — — — — — — 2001 1483 96.8 — — — — — — — 0.0% -3.00 — — — +0.23
17 2001 1493 107.2 — — — — — +2 — 42.1% -0.32 1–4 (20%) 1–1 — -0.28 — — — — — — — — — — — — — — — —
18 2002 1468 100.2 — — — — — +1 — 23.1% -2.38 0–1 1–0 — +0.08 2003 1502 121.7 +5.20 +3.79 0.478 38.0% +30 — — 28.6% -2.00 1–0 — — -0.28
19 2003 1502 115.0 +1.60 -1.26 0.949 48.8% -16 +36 — 38.5% -0.96 0–2 0–1 — -0.50 2004 1469 99.2 +0.78 -1.05 0.888 47.4% +16 — — 25.0% -1.88 0–2 0–1 — +0.24
20 2004 1477 114.2 -0.14 -0.77 0.943 48.8% +33 +33 — 41.0% -0.59 2–5 (29%) 5–3 (63%) 100.8 +0.59 — — — — — — — — — — — — — — — —
21 2005 1523 111.0 +0.98 -0.91 1.036 50.9% — +12 — 53.8% +0.31 0–1 1–1 — -0.16 2006 1464 100.3 — — — — — — — 33.3% -3.00 0–1 — — -0.05
22 2006 1587 121.3 +0.51 +2.47 1.104 52.5% — +44 — 70.0% +1.10 0–2 2–0 — +0.61 2007 1456 103.0 -0.34 -3.00 0.801 45.3% — — — 33.3% -1.67 0–1 — — +0.06
23 2007 1724 140.9 +0.53 +1.87 1.040 50.5% -68 +9 -168 54.3% +0.49 10–6 (63%) 3–5 (38%) 106.8 +0.51 2008 1458 99.8 -2.62 -0.84 0.676 42.7% +5 — — 33.3% -1.67 — — — +0.12
24 2008 1569 101.1 -3.68 -3.86 0.755 43.8% +18 +42 — 30.3% -1.33 3–4 (43%) — — -0.51 — — — — — — — — — — — — — — — —
25 2009 1555 — +1.66 -1.69 0.713 41.5% — — — — — — — — -0.05 — — — — — — — — — — — — — — — —
Career — 1731 126.1 -0.09 +0.34 0.975 49.2% -22 +25 -168 45.8% -0.26 16–25 (39%) 13–11 (54%) 102.1 +0.23 — 1503 108.5 +0.08 -0.39 0.701 43.2% +17 — — 27.6% -2.04 1–4 (20%) 0–1 — +2.67

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.