Kai-Chen Chang
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Shuai Zhang | 2 | 1 | 3 | Jul 27, 2017 | H2H |
| Shuai Peng | 0 | 3 | 3 | Mar 2, 2017 | H2H |
| Iveta Benesova | 1 | 2 | 3 | Aug 2, 2012 | H2H |
| Tamarine Tanasugarn | 1 | 2 | 3 | Feb 10, 2012 | H2H |
| Qiang Wang | 0 | 2 | 2 | Oct 12, 2017 | H2H |
H2H data updated: 2026-10-29 00:00 UTC
Kai-Chen Chang vs Anna-Lena Groenefeld H2H: 0-1
Anna-Lena Groenefeld holds a 1–0 lead over Kai-Chen Chang in their WTA head-to-head. Across 1 main-draw meeting, Anna-Lena Groenefeld leads 1–0 on hard courts. Most recently, Anna-Lena Groenefeld won the 2009 Korea Open second round 6-7(5) 6-4 6-3.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H
0
–
1
1 main-draw meetings
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Anna-Lena Groenefeld | 6-7(5) 6-4 6-3 | Kai-Chen Chang | Match data | Sep 25, 2009* | R16 | Korea 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 | — | #82 | 808 | 1,646 | 32 | 59 | 35.2% | 0 | 0 | 0 | 0 | 0 | 0 |
| Anna-Lena Groenefeld | — | #14 | 1,365 | 1,856 | 109 | 131 | 45.4% | 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 | Kai-Chen Chang | Anna-Lena Groenefeld | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 18 | 2009 | 5–5 | 50.0% | #94 | 1,558 | 0 | 0 | 2003 | 3–6 | 33.3% | #118 | 1,515 | 0 | 0 |
| 19 | 2010 | 9–15 | 37.5% | #117 | 1,565 | 0 | 0 | 2004 | 7–15 | 31.8% | #68 | 1,478 | 0 | 0 |
| 20 | 2011 | 1–8 | 11.1% | #148 | 1,489 | 0 | 0 | 2005 | 36–26 | 58.1% | #21 | 1,790 | 0 | 0 |
| 21 | 2012 | 9–11 | 45.0% | #86 | 1,579 | 0 | 0 | 2006 | 30–26 | 53.6% | #19 | 1,656 | 0 | 1 |
| 22 | 2013 | 1–4 | 20.0% | #621 | 1,532 | 0 | 0 | 2007 | 4–15 | 21.1% | #204 | 1,521 | 0 | 1 |
| 23 | — | — | — | — | — | — | — | 2008 | 7–7 | 50.0% | #76 | 1,593 | 0 | 1 |
| 24 | 2015 | 1–2 | 33.3% | #134 | 1,529 | 0 | 0 | 2009 | 18–23 | 43.9% | #65 | 1,655 | 0 | 1 |
| 25 | 2016 | 3–4 | 42.9% | #131 | 1,602 | 0 | 0 | 2010 | 4–11 | 26.7% | #166 | 1,563 | 0 | 1 |
| 26 | 2017 | 2–9 | 18.2% | #219 | 1,536 | 0 | 0 | 2011 | 0–2 | 0.0% | #266 | 1,542 | 0 | 1 |
| 27 | 2018 | 1–1 | 50.0% | #401 | 1,536 | 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 | Anna-Lena Groenefeld | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| 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% | — | — | — | — | — | — | — | — | — | — | — | — | 2003 | 1 | 3 | 4 | 25.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | 1 | 1 | 2 | 50.0% |
| 19 | 2010 | 7 | 9 | 16 | 43.8% | 1 | 4 | 5 | 20.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | 2004 | 3 | 9 | 12 | 25.0% | 4 | 5 | 9 | 44.4% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 20 | 2011 | 1 | 5 | 6 | 16.7% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | 2005 | 27 | 16 | 43 | 62.8% | 7 | 6 | 13 | 53.8% | 1 | 3 | 4 | 25.0% | 1 | 1 | 2 | 50.0% |
| 21 | 2012 | 9 | 8 | 17 | 52.9% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | 2006 | 10 | 16 | 26 | 38.5% | 18 | 6 | 24 | 75.0% | 2 | 2 | 4 | 50.0% | 0 | 2 | 2 | 0.0% |
| 22 | 2013 | 1 | 4 | 5 | 20.0% | — | — | — | — | — | — | — | — | — | — | — | — | 2007 | 2 | 7 | 9 | 22.2% | 2 | 6 | 8 | 25.0% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2008 | 4 | 5 | 9 | 44.4% | 3 | 2 | 5 | 60.0% | — | — | — | — | — | — | — | — |
| 24 | 2015 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | 2009 | 8 | 13 | 21 | 38.1% | 10 | 8 | 18 | 55.6% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 25 | 2016 | 3 | 4 | 7 | 42.9% | — | — | — | — | — | — | — | — | — | — | — | — | 2010 | 3 | 7 | 10 | 30.0% | 1 | 3 | 4 | 25.0% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 26 | 2017 | 2 | 7 | 9 | 22.2% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | 2011 | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 27 | 2018 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 30 | 45 | 75 | 40.0% | 1 | 7 | 8 | 12.5% | 1 | 7 | 8 | 12.5% | — | — | — | — | — | 58 | 77 | 135 | 43.0% | 46 | 39 | 85 | 54.1% | 3 | 11 | 14 | 21.4% | 2 | 4 | 6 | 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 140/231 of Anna-Lena Groenefeld'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 | Anna-Lena Groenefeld | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | 2004 | 3/22 | 2.3 | 3.3 | 58.5% | 65.7% | 58.7% | 42.9% | 40.3% | 62.7% | 48.0% |
| 20 | 2011 | 9/9 | 1.7 | 4.6 | 63.3% | 61.6% | 39.8% | 49.4% | 42.5% | 53.4% | 40.5% | 2005 | 13/62 | 3.9 | 4.3 | 56.2% | 70.4% | 51.6% | 58.5% | 40.0% | 62.2% | 45.3% |
| 21 | 2012 | 18/20 | 1.8 | 5.3 | 59.7% | 62.2% | 41.6% | 43.4% | 47.6% | 54.1% | 43.1% | 2006 | 40/56 | 3.2 | 5.1 | 58.9% | 65.4% | 45.4% | 57.8% | 44.8% | 57.3% | 42.9% |
| 22 | 2013 | 4/5 | 0.5 | 7.3 | 58.3% | 63.2% | 38.3% | 61.1% | 54.1% | 52.8% | 44.6% | 2007 | 16/19 | 4.6 | 8.0 | 52.4% | 67.4% | 39.9% | 52.8% | 43.4% | 54.0% | 38.2% |
| 23 | — | —/— | — | — | — | — | — | — | — | — | — | 2008 | 13/14 | 5.1 | 5.3 | 47.4% | 75.3% | 47.4% | 51.1% | 46.9% | 61.2% | 41.4% |
| 24 | 2015 | 2/3 | 2.0 | 3.0 | 62.9% | 55.7% | 48.8% | 62.9% | 52.6% | 53.0% | 47.3% | 2009 | 39/41 | 3.6 | 5.4 | 58.2% | 64.9% | 46.1% | 54.3% | 54.9% | 56.5% | 41.2% |
| 25 | 2016 | 7/7 | 1.6 | 7.1 | 57.2% | 62.9% | 41.9% | 56.2% | 48.6% | 54.3% | 47.2% | 2010 | 14/15 | 2.8 | 7.0 | 55.0% | 63.7% | 38.6% | 47.6% | 48.2% | 52.7% | 40.9% |
| 26 | 2017 | 11/11 | 2.0 | 7.5 | 57.6% | 55.9% | 34.9% | 51.1% | 38.8% | 46.9% | 39.9% | 2011 | 2/2 | 1.5 | 4.0 | 52.6% | 62.6% | 38.3% | 55.8% | 25.0% | 51.3% | 27.9% |
| 27 | 2018 | 2/2 | 1.0 | 5.5 | 63.9% | 60.4% | 38.2% | 56.7% | 60.0% | 52.2% | 50.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 84/91 | 1.6 | 6.0 | 60.0% | 59.9% | 40.8% | 52.1% | 47.1% | 52.3% | 44.0% | — | 140/240 | 3.6 | 5.6 | 56.1% | 66.7% | 45.2% | 54.3% | 47.2% | 57.1% | 41.7% |
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 | Kai-Chen Chang | Anna-Lena Groenefeld | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 119.5 | -1.06 | +1.66 | 1.024 | 50.6% | +10 | — | — | 50.0% | +0.08 | 2–2 (50%) | 2–2 (50%) | 102.0 | +0.20 | 2003 | 1516 | 115.9 | — | — | — | — | +21 | +1 | — | 38.1% | -0.48 | 1–2 (33%) | 0–3 (0%) | — | -0.25 |
| 19 | 2010 | 1565 | 115.7 | -2.81 | +0.01 | 0.923 | 48.1% | +27 | -47 | +37 | 41.1% | -0.68 | 3–7 (30%) | 1–0 | — | -0.25 | 2004 | 1478 | 112.5 | +1.14 | +0.30 | 1.285 | 54.6% | +4 | +58 | — | 34.1% | -0.61 | 1–1 | 0–2 | — | +0.25 |
| 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 | 2005 | 1790 | 139.1 | +3.94 | +1.05 | 1.197 | 53.3% | -4 | -165 | -292 | 57.8% | +0.52 | 8–4 (67%) | 4–3 (57%) | 105.9 | +1.73 |
| 21 | 2012 | 1579 | 117.4 | -2.25 | -0.69 | 0.939 | 48.7% | +63 | — | — | 44.2% | -0.47 | 2–3 (40%) | 4–2 (67%) | 100.8 | -0.04 | 2006 | 1656 | 132.8 | +1.54 | -0.91 | 1.005 | 50.2% | -69 | +191 | -102 | 52.7% | +0.15 | 10–9 (53%) | 6–7 (46%) | 98.7 | +2.20 |
| 22 | 2013 | 1532 | 98.7 | -1.81 | -0.42 | 0.946 | 49.0% | +42 | — | — | 25.0% | -1.17 | 1–1 | 0–2 | — | +0.21 | 2007 | 1522 | 109.9 | -1.54 | -3.57 | 0.830 | 46.3% | 0 | +226 | — | 26.2% | -1.21 | 1–3 (25%) | 1–5 (17%) | 93.7 | +0.52 |
| 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2008 | 1594 | 128.7 | +2.89 | -1.21 | 1.066 | 50.8% | -23 | +139 | — | 51.7% | +0.03 | 0–1 | — | — | -1.00 |
| 24 | 2015 | 1530 | 107.9 | -0.55 | -0.03 | 1.007 | 50.3% | +35 | — | — | 33.3% | -0.33 | — | — | — | -0.01 | 2009 | 1655 | 129.0 | +0.58 | -2.14 | 0.947 | 48.9% | -60 | +88 | — | 46.3% | -0.34 | 5–12 (29%) | 4–6 (40%) | 92.9 | -1.97 |
| 25 | 2016 | 1603 | 113.2 | -1.35 | +0.69 | 1.031 | 50.7% | +29 | — | — | 41.2% | +0.18 | 2–1 (67%) | — | — | +0.28 | 2010 | 1563 | 104.7 | -2.32 | -1.60 | 0.865 | 46.9% | -2 | +101 | — | 37.8% | -1.51 | 1–6 (14%) | 3–0 (100%) | 97.3 | -0.12 |
| 26 | 2017 | 1537 | 106.9 | -5.20 | -1.20 | 0.751 | 43.4% | +37 | — | — | 17.4% | -2.39 | 1–0 | 1–1 | — | -0.21 | 2011 | 1543 | 96.7 | -0.53 | -1.59 | 0.574 | 41.1% | — | — | — | 0.0% | -3.75 | — | — | — | -0.26 |
| 27 | 2018 | 1536 | 102.0 | -0.12 | -0.26 | 1.065 | 51.5% | — | — | — | 50.0% | +0.50 | — | 0–1 | — | +0.27 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1646 | 117.6 | -2.39 | -0.31 | 0.921 | 48.2% | +38 | -47 | +37 | 37.7% | -0.76 | 11–18 (38%) | 9–8 (53%) | 98.4 | +0.74 | — | 1857 | 131.6 | +0.84 | -1.46 | 0.971 | 49.4% | -24 | +89 | -197 | 47.1% | -0.20 | 27–38 (42%) | 18–26 (41%) | 91.9 | +0.46 |
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.
Anna-Lena Groenefeld
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Nadia Petrova | 1 | 7 | 8 | May 13, 2009 | H2H |
| Roberta Vinci | 3 | 2 | 5 | Jan 20, 2010 | H2H |
| Virginie Razzano | 4 | 1 | 5 | Aug 12, 2009 | H2H |
| Dinara Safina | 2 | 3 | 5 | Jun 17, 2009 | H2H |
| Amélie Mauresmo | 1 | 4 | 5 | May 26, 2009 | H2H |