H2H data updated: 2026-10-29 00:00 UTC

Ekaterina Bychkova vs Zi Yan H2H: 1-0

Ekaterina Bychkova holds a 1–0 lead over Zi Yan in their WTA head-to-head. Across 1 main-draw meeting, Ekaterina Bychkova leads 1–0 on hard courts. Most recently, Ekaterina Bychkova won the 2007 US Open first round 6-2 6-4.

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

Ekaterina Bychkova
RUS Age 41 Right-Handed 171 cm / 5'7"
H2H
1 – 0
1 main-draw meetings
Zi Yan
HKG Age 41 Right-Handed 171 cm / 5'7"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Ekaterina Bychkova #99 6-2 6-4 Zi Yan #77 Match data Aug 29, 2007* 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
Ekaterina Bychkova — #66 588 1,570 34 67 33.7% 0 0 0 0 0 0
Zi Yan — #40 678 1,621 34 58 37.0% 0 0 0 0 1 1

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 Ekaterina Bychkova Zi Yan
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 2002 0–1 0.0% #297 1,486 0 0
18 — — — — — — — 2003 2–3 40.0% #161 1,486 0 0
19 2004 1–1 50.0% #155 1,504 0 0 2004 0–4 0.0% #296 1,451 0 0
20 2005 9–10 47.4% #70 1,545 0 0 2005 8–4 66.7% #104 1,573 0 1
21 2006 9–21 30.0% #76 1,483 0 0 2006 6–16 27.3% #166 1,484 0 1
22 2007 5–13 27.8% #111 1,464 0 0 2007 10–12 45.5% #58 1,544 0 1
23 2008 5–12 29.4% #117 1,442 0 0 2008 7–14 33.3% #126 1,528 0 1
24 2009 1–3 25.0% #121 1,430 0 0 2009 0–3 0.0% #306 1,486 0 1
25 2010 3–4 42.9% #181 1,479 0 0 2010 1–1 50.0% #422 1,495 0 1
26 2011 0–1 0.0% #171 1,477 0 0 — — — — — — —
27 2012 0–1 0.0% #208 1,463 0 0 — — — — — — —
28 2013 1–1 50.0% #159 1,483 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 Ekaterina Bychkova Zi Yan
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 %
17 — — — — — — — — — — — — — — — — — 2002 0 1 1 0.0% — — — — — — — — — — — —
18 — — — — — — — — — — — — — — — — — 2003 2 2 4 50.0% 0 1 1 0.0% — — — — — — — —
19 2004 1 1 2 50.0% — — — — — — — — — — — — 2004 0 3 3 0.0% 0 1 1 0.0% — — — — — — — —
20 2005 7 8 15 46.7% 2 2 4 50.0% — — — — — — — — 2005 6 2 8 75.0% 2 2 4 50.0% — — — — — — — —
21 2006 7 11 18 38.9% 0 8 8 0.0% 1 1 2 50.0% 1 1 2 50.0% 2006 2 10 12 16.7% 3 4 7 42.9% 1 2 3 33.3% — — — —
22 2007 3 6 9 33.3% 1 4 5 20.0% 0 2 2 0.0% 1 1 2 50.0% 2007 8 7 15 53.3% 2 3 5 40.0% 0 2 2 0.0% — — — —
23 2008 5 6 11 45.5% 0 5 5 0.0% 0 1 1 0.0% — — — — 2008 5 9 14 35.7% 2 4 6 33.3% 0 1 1 0.0% — — — —
24 2009 1 3 4 25.0% — — — — — — — — — — — — 2009 0 2 2 0.0% 0 1 1 0.0% — — — — — — — —
25 2010 3 3 6 50.0% 0 1 1 0.0% — — — — — — — — 2010 1 1 2 50.0% — — — — — — — — — — — —
26 2011 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
27 2012 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
28 2013 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 28 41 69 40.6% 3 20 23 13.0% 1 4 5 20.0% 2 2 4 50.0% — 24 37 61 39.3% 9 16 25 36.0% 1 5 6 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 58/99 of Ekaterina Bychkova's and 52/70 of Zi Yan'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 Ekaterina Bychkova Zi Yan
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%
20 2005 1/19 5.0 2.0 67.3% 72.7% 37.5% 0.0% 54.5% 61.2% 54.7% — —/— — — — — — — — — —
21 2006 16/30 3.9 2.8 50.8% 62.4% 43.3% 55.4% 42.8% 53.3% 41.1% 2006 10/22 1.8 3.3 64.1% 56.8% 43.0% 56.3% 48.9% 52.2% 41.1%
22 2007 15/18 4.2 3.7 52.0% 66.1% 41.6% 54.5% 45.8% 54.8% 39.2% 2007 18/22 1.3 2.6 65.3% 60.0% 45.6% 47.1% 55.2% 54.9% 44.5%
23 2008 12/17 5.1 3.1 50.3% 67.9% 38.0% 55.9% 59.4% 53.4% 37.7% 2008 20/21 0.9 3.6 63.5% 56.5% 41.5% 49.7% 43.3% 51.0% 44.6%
24 2009 3/4 6.3 4.7 42.0% 76.7% 49.6% 55.1% 36.1% 60.1% 35.9% 2009 2/3 1.0 4.5 62.7% 53.0% 39.2% 33.3% 47.3% 47.8% 44.6%
25 2010 7/7 5.0 7.1 49.4% 70.9% 42.4% 58.5% 50.9% 57.1% 42.4% 2010 2/2 0.0 2.5 62.7% 53.2% 38.5% 39.3% 33.6% 47.7% 39.0%
26 2011 1/1 2.0 6.0 29.4% 80.0% 38.9% 33.3% 0.0% 51.0% 30.0% — —/— — — — — — — — — —
27 2012 1/1 4.0 11.0 51.1% 71.7% 38.6% 40.0% 45.5% 55.6% 40.4% — —/— — — — — — — — — —
28 2013 2/2 5.0 1.5 41.3% 66.9% 57.2% 72.7% 70.8% 64.0% 57.8% — —/— — — — — — — — — —
Career — 58/101 4.5 3.8 50.0% 67.1% 42.2% 54.3% 48.0% 55.0% 40.4% — 52/92 1.2 3.2 64.2% 57.5% 43.0% 49.1% 48.3% 52.3% 43.7%

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 Ekaterina Bychkova Zi Yan
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
17 — — — — — — — — — — — — — — — — 2002 1486 99.3 — — — — — — — 0.0% -2.50 — — — +0.03
18 — — — — — — — — — — — — — — — — 2003 1486 102.0 — — — — +30 — — 45.5% -0.09 0–1 1–1 — +0.26
19 2004 1505 101.3 — — — — — — — 50.0% 0.00 — — — +0.10 2004 1451 99.1 — — — — +21 — — 27.3% -1.82 0–3 (0%) 1–0 — -0.09
20 2005 1545 115.8 +0.50 +0.36 1.410 57.5% +2 +5 — 50.0% +0.29 1–3 (25%) 0–1 — +0.61 2005 1573 115.2 — — — — +3 -61 — 60.0% +0.80 2–1 (67%) 2–2 (50%) 101.7 +0.28
21 2006 1484 116.4 -1.26 -2.26 0.878 47.5% +45 -42 — 34.4% -0.95 2–6 (25%) 2–4 (33%) 95.9 -0.25 2006 1485 107.1 -2.70 -1.75 0.860 47.0% -6 +46 +98 32.0% -1.34 2–4 (33%) 2–2 (50%) 98.8 -0.22
22 2007 1464 117.6 -0.97 -2.69 0.867 47.1% +81 -53 — 35.7% -0.74 1–5 (17%) 1–3 (25%) 95.4 +0.13 2007 1545 115.4 -0.92 0.00 0.986 49.7% +10 -16 — 37.8% -0.64 4–3 (57%) 2–0 — +1.05
23 2008 1443 105.4 -1.14 -3.36 0.808 45.9% +98 -82 — 36.8% -1.03 2–4 (33%) 2–1 (67%) 99.1 +0.35 2008 1529 118.0 -2.92 -0.04 0.910 47.8% +35 -11 — 31.9% -1.15 4–3 (57%) 1–0 — -0.15
24 2009 1431 96.6 -0.72 -0.93 0.899 48.4% +79 — — 33.3% -1.33 0–1 0–1 — +0.33 2009 1487 98.3 -0.13 -1.41 0.855 46.2% — — — 14.3% -2.00 0–1 — — +0.21
25 2010 1479 116.9 +1.66 -1.32 0.989 49.8% +70 — — 44.4% -0.17 2–2 (50%) 1–1 — -0.38 2010 1496 98.7 -4.24 -2.37 0.747 44.1% — — — 40.0% -1.80 1–0 1–0 — +0.07
26 2011 1477 105.3 +2.99 +1.39 0.612 40.6% — — — 0.0% -4.00 — — — -0.20 — — — — — — — — — — — — — — — —
27 2012 1463 100.6 -3.44 -4.61 0.910 48.0% — — — 33.3% -0.33 0–1 — — +0.08 — — — — — — — — — — — — — — — —
28 2013 1484 103.1 +0.17 +3.42 1.605 61.7% — — — 33.3% -0.33 0–1 — — +0.02 — — — — — — — — — — — — — — — —
31 2016 1469 94.7 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 1571 117.0 -0.66 -2.15 0.898 47.9% +54 -45 — 38.7% -0.64 8–23 (26%) 6–11 (35%) 88.9 +0.79 — 1622 114.1 -2.13 -0.50 0.916 48.1% +14 -3 +98 36.5% -0.88 13–16 (45%) 10–5 (67%) 102.5 +1.58

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.