H2H data updated: 2026-09-14 00:00 UTC
Anna-Lena Groenefeld holds a 2–0 lead over Tiantian Sun in their WTA head-to-head. Across 2 main-draw meetings, Anna-Lena Groenefeld leads 2–0 on hard courts. Most recently, Anna-Lena Groenefeld won the 2005 Hyderabad quarterfinal 7-6(5) 6-3.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Anna-Lena Groenefeld | 7-6(5) 6-3 | Tiantian Sun | Match data | Feb 12, 2005* | QF | Hyderabad | Tier IV → modern equivalent WTA 250 | Hard |
| Anna-Lena Groenefeld | 6-4 6-7(4) 6-1 | Tiantian Sun | Match data | Sep 11, 2003* | R32 | Bali | Tier III → 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Anna-Lena Groenefeld | #1,012 | #14 | 1,365 | 1,856 | 109 | 130 | 45.6% | 0 | 0 | 0 | 0 | 1 | 1 |
| Tiantian Sun | #819 | #77 | 395 | 1,649 | 27 | 54 | 33.3% | 0 | 0 | 0 | 0 | 1 | 1 |
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Anna-Lena Groenefeld | Tiantian Sun | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 2003 | 3–6 | 33.3% | #118 | 1,515 | 0 | 0 | 2002 | 0–1 | 0.0% | #231 | 1,493 | 0 | 0 |
| 2004 | 7–15 | 31.8% | #68 | 1,478 | 0 | 0 | 2003 | 2–7 | 22.2% | #129 | 1,451 | 0 | 0 |
| 2005 | 36–26 | 58.1% | #21 | 1,790 | 0 | 0 | 2004 | 2–9 | 18.2% | #126 | 1,429 | 0 | 0 |
| 2006 | 30–26 | 53.6% | #19 | 1,656 | 0 | 1 | 2005 | 7–6 | 53.8% | #105 | 1,520 | 0 | 0 |
| 2007 | 4–14 | 22.2% | #204 | 1,527 | 0 | 1 | 2006 | 12–12 | 50.0% | #81 | 1,628 | 0 | 1 |
| 2008 | 7–7 | 50.0% | #76 | 1,597 | 0 | 1 | 2007 | 3–15 | 16.7% | #230 | 1,505 | 0 | 1 |
| 2009 | 18–23 | 43.9% | #65 | 1,655 | 0 | 1 | 2008 | 1–4 | 20.0% | #281 | 1,493 | 0 | 1 |
| 2010 | 4–11 | 26.7% | #166 | 1,563 | 0 | 1 | — | — | — | — | — | — | — |
| 2011 | 0–2 | 0.0% | #266 | 1,542 | 0 | 1 | — | — | — | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. 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.
| Anna-Lena Groenefeld | Tiantian Sun | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | ||
| 2003 | 1 | 3 | 4 | 25.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | 1 | 1 | 2 | 50.0% | 2002 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 2004 | 3 | 9 | 12 | 25.0% | 4 | 5 | 9 | 44.4% | 0 | 1 | 1 | 0.0% | — | — | — | — | 2003 | 2 | 7 | 9 | 22.2% | — | — | — | — | — | — | — | — | — | — | — | — |
| 2005 | 27 | 16 | 43 | 62.8% | 7 | 6 | 13 | 53.8% | 1 | 3 | 4 | 25.0% | 1 | 1 | 2 | 50.0% | 2004 | 0 | 6 | 6 | 0.0% | 1 | 2 | 3 | 33.3% | 1 | 1 | 2 | 50.0% | — | — | — | — |
| 2006 | 10 | 16 | 26 | 38.5% | 18 | 6 | 24 | 75.0% | 2 | 2 | 4 | 50.0% | 0 | 2 | 2 | 0.0% | 2005 | 7 | 6 | 13 | 53.8% | — | — | — | — | — | — | — | — | — | — | — | — |
| 2007 | 2 | 6 | 8 | 25.0% | 2 | 6 | 8 | 25.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | 2006 | 10 | 10 | 20 | 50.0% | 1 | 1 | 2 | 50.0% | 1 | 1 | 2 | 50.0% | — | — | — | — |
| 2008 | 4 | 5 | 9 | 44.4% | 3 | 2 | 5 | 60.0% | — | — | — | — | — | — | — | — | 2007 | 3 | 8 | 11 | 27.3% | 0 | 5 | 5 | 0.0% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 2009 | 8 | 13 | 21 | 38.1% | 10 | 8 | 18 | 55.6% | 0 | 2 | 2 | 0.0% | — | — | — | — | 2008 | 0 | 3 | 3 | 0.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| 2010 | 3 | 7 | 10 | 30.0% | 1 | 3 | 4 | 25.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2011 | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 58 | 76 | 134 | 43.3% | 46 | 39 | 85 | 54.1% | 3 | 11 | 14 | 21.4% | 2 | 4 | 6 | 33.3% | Career | 22 | 41 | 63 | 34.9% | 3 | 9 | 12 | 25.0% | 2 | 4 | 6 | 33.3% | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. Detailed serve and return statistics available for 140/230 of Anna-Lena Groenefeld's and 28/56 of Tiantian Sun'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.
| Anna-Lena Groenefeld | Tiantian Sun | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| 2004 | 3/22 | 2.3 | 3.3 | 58.5% | 65.7% | 58.7% | 42.9% | 40.3% | 62.7% | 48.0% | 2003 | 1/9 | 1.0 | 4.0 | 59.4% | 60.5% | 30.8% | 28.6% | 28.6% | 48.4% | 40.0% |
| 2005 | 13/62 | 3.9 | 4.3 | 56.2% | 70.4% | 51.6% | 58.5% | 40.0% | 62.2% | 45.3% | 2006 | 9/24 | 1.1 | 1.2 | 67.2% | 58.1% | 44.5% | 53.0% | 49.3% | 53.8% | 37.5% |
| 2006 | 40/56 | 3.2 | 5.1 | 58.9% | 65.4% | 45.4% | 57.8% | 44.8% | 57.3% | 42.9% | 2007 | 14/18 | 1.6 | 2.1 | 65.0% | 55.8% | 43.0% | 44.6% | 35.3% | 51.3% | 40.4% |
| 2007 | 16/18 | 4.6 | 8.0 | 52.4% | 67.4% | 39.9% | 52.8% | 43.4% | 54.0% | 38.2% | 2008 | 4/5 | 1.5 | 3.0 | 65.6% | 55.4% | 41.8% | 51.8% | 30.6% | 51.0% | 36.8% |
| 2008 | 13/14 | 5.1 | 5.3 | 47.4% | 75.3% | 47.4% | 51.1% | 46.9% | 61.2% | 41.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2009 | 39/41 | 3.6 | 5.4 | 58.2% | 64.9% | 46.1% | 54.3% | 54.9% | 56.5% | 41.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2010 | 14/15 | 2.8 | 7.0 | 55.0% | 63.7% | 38.6% | 47.6% | 48.2% | 52.7% | 40.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2011 | 2/2 | 1.5 | 4.0 | 52.6% | 62.6% | 38.3% | 55.8% | 25.0% | 51.3% | 27.9% | — | —/— | — | — | — | — | — | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. 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.
| Anna-Lena Groenefeld | Tiantian Sun | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 2003 | 1516 | 115.9 | — | — | — | — | +21 | +1 | — | 38.1% | -0.48 | 1–2 (33%) | 0–3 (0%) | — | -0.25 | 2002 | 1493 | 101.5 | — | — | — | — | — | — | — | 33.3% | -2.00 | 0–1 | — | — | -0.19 |
| 2004 | 1478 | 112.5 | +1.14 | +0.30 | 1.285 | 54.6% | +4 | +58 | — | 34.1% | -0.61 | 1–1 | 0–2 | — | +0.25 | 2003 | 1451 | 101.0 | -0.20 | -1.27 | 0.776 | 43.9% | +17 | — | — | 22.2% | -1.67 | 0–2 | 1–2 (33%) | — | +0.54 |
| 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 | 2004 | 1430 | 103.5 | — | — | — | — | -34 | +118 | — | 24.0% | -1.68 | 1–2 (33%) | 1–1 | — | -0.02 |
| 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 | 2005 | 1520 | 124.6 | — | — | — | — | -19 | — | — | 57.7% | +0.69 | 1–1 | 3–1 (75%) | — | +0.62 |
| 2007 | 1528 | 109.8 | -1.58 | -3.51 | 0.830 | 46.3% | +7 | +219 | — | 25.6% | -1.23 | 1–2 (33%) | 0–4 (0%) | 95.2 | +0.69 | 2006 | 1629 | 131.4 | -1.14 | -2.98 | 0.811 | 45.8% | -16 | — | — | 52.7% | -0.04 | 2–5 (29%) | — | — | -0.16 |
| 2008 | 1597 | 128.6 | +2.89 | -1.21 | 1.066 | 50.8% | -17 | +136 | — | 51.7% | +0.03 | 0–1 | — | — | -1.01 | 2007 | 1505 | 100.0 | -2.48 | -2.77 | 0.830 | 45.9% | +49 | -23 | — | 20.5% | -2.13 | 1–2 (33%) | 4–1 (80%) | 101.7 | -1.14 |
| 2009 | 1655 | 128.8 | +0.58 | -2.14 | 0.947 | 48.9% | -56 | +88 | — | 46.3% | -0.34 | 5–12 (29%) | 4–6 (40%) | 92.8 | -1.96 | 2008 | 1494 | 101.6 | -1.21 | -2.08 | 0.750 | 43.9% | +30 | — | — | 30.8% | -1.62 | 1–2 (33%) | 2–3 (40%) | 98.7 | +0.02 |
| 2010 | 1563 | 104.5 | -2.32 | -1.60 | 0.865 | 46.9% | 0 | +100 | — | 37.8% | -1.51 | 1–6 (14%) | 3–0 (100%) | 97.3 | -0.12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2011 | 1542 | 96.7 | -0.53 | -1.59 | 0.574 | 41.1% | — | — | — | 0.0% | -3.75 | — | — | — | -0.26 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1857 | 131.7 | +0.84 | -1.45 | 0.971 | 49.4% | -23 | +88 | -197 | 47.2% | -0.19 | 27–37 (42%) | 17–25 (40%) | 92.3 | +0.53 | Career | 1650 | 117.9 | -1.79 | -2.69 | 0.810 | 45.5% | 0 | +30 | — | 37.4% | -0.93 | 6–15 (29%) | 11–8 (58%) | 98.4 | -0.41 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| 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 |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Virginie Razzano | 0 | 3 | 3 | Feb 20, 2008 | H2H |
| Gisela Dulko | 0 | 3 | 3 | Aug 8, 2007 | H2H |
| Victoria Azarenka | 1 | 1 | 2 | Apr 17, 2008 | H2H |
| Anastasia Rodionova | 1 | 1 | 2 | Mar 6, 2008 | H2H |
| Martina Hingis | 0 | 2 | 2 | Sep 20, 2007 | H2H |