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

Kai-Chen Chang vs Lilia Osterloh H2H: 1-0

Kai-Chen Chang holds a 1–0 lead over Lilia Osterloh in their WTA head-to-head. Across 1 main-draw meeting, Kai-Chen Chang leads 1–0 on hard courts. Most recently, Kai-Chen Chang won the 2010 Japan Women's Open first round 7-5 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.

Kai-Chen Chang
Chinese Taipei Age 35 Right-Handed 167 cm / 5'6"
H2H
1 – 0
1 main-draw meetings
Lilia Osterloh
USA Age 48 Right-Handed 170 cm / 5'7"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kai-Chen Chang #116 7-5 6-4 Lilia Osterloh #196 Match data Oct 14, 2010* R32 Japan Women's Open International → modern equivalent WTA 250 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
Kai-Chen Chang #1,233 #82 808 1,646 32 59 35.2% 0 0 0 0 0 0
Lilia Osterloh #1,223 #41 738 1,696 83 138 37.6% 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 Kai-Chen Chang Lilia Osterloh
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 2009 5–5 50.0% #94 1,558 0 0 1996 1–1 50.0% #195 1,518 0 0
19 2010 9–15 37.5% #117 1,565 0 0 1997 2–2 50.0% #170 1,550 0 0
20 2011 1–8 11.1% #148 1,488 0 0 1998 0–5 0.0% #120 1,501 0 0
21 2012 9–11 45.0% #86 1,579 0 0 1999 9–13 40.9% #79 1,545 0 0
22 2013 1–4 20.0% #621 1,531 0 0 2000 15–19 44.1% #43 1,596 0 0
23 — — — — — — — 2001 23–25 47.9% #53 1,658 0 0
24 2015 1–2 33.3% #134 1,529 0 0 2002 7–18 28.0% #156 1,535 0 0
25 2016 3–4 42.9% #131 1,602 0 0 2003 0–2 0.0% #180 1,508 0 0
26 2017 2–9 18.2% #219 1,536 0 0 2004 4–5 44.4% #119 1,561 0 0
27 2018 1–1 50.0% #401 1,536 0 0 2005 2–9 18.2% #144 1,488 0 0
28 — — — — — — — 2006 6–8 42.9% #118 1,509 0 0
29 — — — — — — — 2007 7–12 36.8% #91 1,544 0 0
30 — — — — — — — 2008 3–10 23.1% #230 1,486 0 0
31 — — — — — — — 2009 3–3 50.0% #136 1,510 0 0
32 — — — — — — — 2010 1–6 14.3% #237 1,467 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 Kai-Chen Chang Lilia Osterloh
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 %
18 2009 5 5 10 50.0% — — — — — — — — — — — — 1996 1 1 2 50.0% — — — — — — — — — — — —
19 2010 7 9 16 43.8% 1 4 5 20.0% 1 2 3 33.3% — — — — 1997 2 1 3 66.7% — — — — — — — — 0 1 1 0.0%
20 2011 1 5 6 16.7% 0 1 1 0.0% 0 2 2 0.0% — — — — 1998 0 3 3 0.0% 0 1 1 0.0% 0 1 1 0.0% — — — —
21 2012 9 8 17 52.9% 0 1 1 0.0% 0 2 2 0.0% — — — — 1999 6 8 14 42.9% 2 3 5 40.0% 1 2 3 33.3% — — — —
22 2013 1 4 5 20.0% — — — — — — — — — — — — 2000 6 9 15 40.0% 2 5 7 28.6% 5 2 7 71.4% 2 3 5 40.0%
23 — — — — — — — — — — — — — — — — — 2001 14 13 27 51.9% 4 6 10 40.0% 2 3 5 40.0% 3 3 6 50.0%
24 2015 1 2 3 33.3% — — — — — — — — — — — — 2002 6 8 14 42.9% 0 7 7 0.0% 1 2 3 33.3% 0 1 1 0.0%
25 2016 3 4 7 42.9% — — — — — — — — — — — — 2003 — — — — — — — — 0 2 2 0.0% — — — —
26 2017 2 7 9 22.2% 0 1 1 0.0% 0 1 1 0.0% — — — — 2004 4 5 9 44.4% — — — — — — — — — — — —
27 2018 1 1 2 50.0% — — — — — — — — — — — — 2005 0 3 3 0.0% 2 4 6 33.3% 0 1 1 0.0% 0 1 1 0.0%
28 — — — — — — — — — — — — — — — — — 2006 6 6 12 50.0% — — — — 0 2 2 0.0% — — — —
29 — — — — — — — — — — — — — — — — — 2007 5 9 14 35.7% 1 1 2 50.0% 1 1 2 50.0% 0 1 1 0.0%
30 — — — — — — — — — — — — — — — — — 2008 3 5 8 37.5% 0 5 5 0.0% — — — — — — — —
31 — — — — — — — — — — — — — — — — — 2009 2 2 4 50.0% — — — — 1 1 2 50.0% — — — —
32 — — — — — — — — — — — — — — — — — 2010 1 3 4 25.0% 0 2 2 0.0% 0 1 1 0.0% — — — —
Career — 30 45 75 40.0% 1 7 8 12.5% 1 7 8 12.5% — — — — — 56 76 132 42.4% 11 34 45 24.4% 11 18 29 37.9% 5 10 15 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 84/91 of Kai-Chen Chang's and 52/70 of Lilia Osterloh'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 Kai-Chen Chang Lilia Osterloh
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 2009 9/10 1.0 4.1 64.7% 59.0% 43.6% 58.2% 54.3% 53.4% 47.7% — —/— — — — — — — — — —
19 2010 22/24 1.6 6.8 58.9% 58.6% 41.8% 54.0% 46.2% 51.7% 44.6% — —/— — — — — — — — — —
20 2011 9/9 1.7 4.6 63.3% 61.6% 39.8% 49.4% 42.5% 53.4% 40.5% — —/— — — — — — — — — —
21 2012 18/20 1.8 5.3 59.7% 62.2% 41.6% 43.4% 47.6% 54.1% 43.1% — —/— — — — — — — — — —
22 2013 4/5 0.5 7.3 58.3% 63.2% 38.3% 61.1% 54.1% 52.8% 44.6% — —/— — — — — — — — — —
24 2015 2/3 2.0 3.0 62.9% 55.7% 48.8% 62.9% 52.6% 53.0% 47.3% — —/— — — — — — — — — —
25 2016 7/7 1.6 7.1 57.2% 62.9% 41.9% 56.2% 48.6% 54.3% 47.2% — —/— — — — — — — — — —
26 2017 11/11 2.0 7.5 57.6% 55.9% 34.9% 51.1% 38.8% 46.9% 39.9% — —/— — — — — — — — — —
27 2018 2/2 1.0 5.5 63.9% 60.4% 38.2% 56.7% 60.0% 52.2% 50.9% 2005 3/11 0.3 4.3 60.5% 46.3% 46.2% 38.9% 66.7% 46.9% 37.3%
28 — —/— — — — — — — — — — 2006 7/14 0.9 3.6 66.1% 56.0% 39.1% 42.7% 47.9% 49.6% 46.1%
29 — —/— — — — — — — — — — 2007 17/19 1.8 3.6 60.1% 54.8% 45.0% 46.6% 44.5% 50.6% 43.6%
30 — —/— — — — — — — — — — 2008 12/13 1.3 4.6 58.3% 60.2% 37.4% 55.9% 42.2% 50.7% 42.9%
31 — —/— — — — — — — — — — 2009 6/6 2.2 2.7 62.8% 60.1% 48.3% 55.1% 59.7% 56.1% 39.6%
32 — —/— — — — — — — — — — 2010 7/7 2.9 3.0 61.3% 57.0% 39.1% 47.3% 54.5% 50.0% 37.0%
Career — 84/91 1.6 6.0 60.0% 59.9% 40.8% 52.1% 47.1% 52.3% 44.0% — 52/221 1.7 3.7 61.0% 56.6% 42.1% 48.9% 48.8% 50.8% 42.1%

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 Kai-Chen Chang Lilia Osterloh
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
18 2009 1558 119.4 -1.06 +1.66 1.024 50.6% +11 — — 50.0% +0.08 2–2 (50%) 2–2 (50%) 102.0 +0.20 1996 1519 110.9 — — — — — — — 50.0% +0.50 — — — -0.06
19 2010 1565 115.7 -2.81 +0.01 0.923 48.1% +27 -48 +36 41.1% -0.68 3–7 (30%) 1–0 — -0.25 1997 1551 112.0 — — — — +33 — — 28.6% -2.00 1–0 — — +0.04
20 2011 1489 107.6 -1.48 -2.00 0.870 47.1% +59 — — 27.3% -1.55 0–4 (0%) 1–0 — +0.22 1998 1502 105.3 — — — — +38 — — 23.1% -1.85 0–3 (0%) 0–1 — +0.07
21 2012 1579 117.3 -2.25 -0.69 0.939 48.7% +62 — — 44.2% -0.47 2–3 (40%) 4–2 (67%) 100.8 -0.04 1999 1546 126.1 — — — — +29 +17 +5 40.0% -0.98 4–2 (67%) — — -0.06
22 2013 1532 98.7 -1.81 -0.42 0.946 49.0% +42 — — 25.0% -1.17 1–1 0–2 — +0.21 2000 1596 120.7 — — — — -34 -49 +61 42.5% -0.41 8–6 (57%) 3–8 (27%) 101.9 -0.05
23 — — — — — — — — — — — — — — — — 2001 1658 133.0 — — — — -4 -132 +27 49.5% -0.09 5–8 (38%) 7–4 (64%) 100.9 -0.27
24 2015 1529 107.9 -0.55 -0.03 1.007 50.3% +36 — — 33.3% -0.33 — — — -0.01 2002 1535 110.8 — — — — +102 -112 +96 29.3% -1.59 5–3 (63%) 2–3 (40%) 102.7 -1.31
25 2016 1603 113.2 -1.35 +0.69 1.031 50.7% +29 — — 41.2% +0.18 2–1 (67%) — — +0.28 2003 1509 94.9 — — — — — — — 0.0% -2.75 — — — +0.04
26 2017 1537 106.9 -5.20 -1.20 0.751 43.4% +36 — — 17.4% -2.39 1–0 1–1 — -0.21 2004 1561 130.0 — — — — +95 — — 47.6% -0.38 1–2 (33%) 1–1 — -0.58
27 2018 1536 102.0 -0.12 -0.26 1.065 51.5% — — — 50.0% +0.50 — 0–1 — +0.27 2005 1488 99.5 -2.44 -2.36 0.703 41.7% +105 -60 — 28.0% -2.08 0–3 (0%) 0–1 — -0.27
28 — — — — — — — — — — — — — — — — 2006 1510 110.3 -2.68 -0.13 0.914 47.9% +82 — — 46.9% -0.19 3–3 (50%) 1–4 (20%) 98.8 +0.94
29 — — — — — — — — — — — — — — — — 2007 1545 117.7 -3.39 +0.08 0.882 46.8% +27 — — 41.9% -0.91 1–4 (20%) 1–0 — -0.55
30 — — — — — — — — — — — — — — — — 2008 1486 100.1 -3.07 -1.01 0.871 46.7% +64 -97 — 24.0% -1.44 1–0 1–3 (25%) — +0.06
31 — — — — — — — — — — — — — — — — 2009 1511 100.3 -0.43 -1.46 0.901 48.5% +43 — — 40.0% -0.40 3–0 (100%) 0–1 — +0.33
32 — — — — — — — — — — — — — — — — 2010 1468 100.5 -2.57 -3.96 0.740 43.5% +60 — — 18.8% -2.19 1–1 0–1 — -0.29
Career — 1646 117.6 -2.39 -0.31 0.921 48.2% +38 -48 +36 37.7% -0.76 11–18 (38%) 9–8 (53%) 98.4 +0.74 — 1696 123.9 -2.71 -1.06 0.855 46.4% +34 -80 +48 39.2% -0.82 33–35 (49%) 16–27 (37%) 99.8 -0.89

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.