H2H data updated: 2026-09-13 00:00 UTC
Anna-Lena Groenefeld holds a 1–0 lead over Jamea Jackson in their WTA head-to-head. Across 1 main-draw meeting, Anna-Lena Groenefeld leads 1–0 on clay. Most recently, Anna-Lena Groenefeld won the 2006 Roland Garros second round 6-7(8) 6-2 6-1.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Anna-Lena Groenefeld | 6-7(8) 6-2 6-1 | Jamea Jackson | Match data | May 31, 2006* | R64 | Roland Garros | Grand Slam | Clay |
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 |
| Jamea Jackson | #382 | #43 | 479 | 1,662 | 33 | 50 | 39.8% | 0 | 0 | 0 | 0 | 0 | 0 |
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 | Anna-Lena Groenefeld | Jamea Jackson | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | — | — | — | — | — | — | — | 2003 | 0–1 | 0.0% | #444 | 1,491 | 0 | 0 |
| 17 | — | — | — | — | — | — | — | 2004 | 2–5 | 28.6% | #156 | 1,482 | 0 | 0 |
| 18 | 2003 | 3–6 | 33.3% | #118 | 1,515 | 0 | 0 | 2005 | 10–14 | 41.7% | #80 | 1,520 | 0 | 0 |
| 19 | 2004 | 7–15 | 31.8% | #68 | 1,478 | 0 | 0 | 2006 | 19–19 | 50.0% | #45 | 1,608 | 0 | 0 |
| 20 | 2005 | 36–26 | 58.1% | #21 | 1,790 | 0 | 0 | 2007 | 0–6 | 0.0% | #588 | 1,539 | 0 | 0 |
| 21 | 2006 | 30–26 | 53.6% | #19 | 1,656 | 0 | 1 | 2008 | 2–5 | 28.6% | #273 | 1,529 | 0 | 0 |
| 22 | 2007 | 4–14 | 22.2% | #204 | 1,527 | 0 | 1 | — | — | — | — | — | — | — |
| 23 | 2008 | 7–7 | 50.0% | #76 | 1,597 | 0 | 1 | — | — | — | — | — | — | — |
| 24 | 2009 | 18–23 | 43.9% | #65 | 1,655 | 0 | 1 | — | — | — | — | — | — | — |
| 25 | 2010 | 4–11 | 26.7% | #166 | 1,563 | 0 | 1 | — | — | — | — | — | — | — |
| 26 | 2011 | 0–2 | 0.0% | #266 | 1,542 | 0 | 1 | — | — | — | — | — | — | — |
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 | Anna-Lena Groenefeld | Jamea Jackson | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2003 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2004 | 1 | 4 | 5 | 20.0% | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — |
| 18 | 2003 | 1 | 3 | 4 | 25.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | 1 | 1 | 2 | 50.0% | 2005 | 6 | 11 | 17 | 35.3% | 1 | 1 | 2 | 50.0% | 3 | 2 | 5 | 60.0% | — | — | — | — |
| 19 | 2004 | 3 | 9 | 12 | 25.0% | 4 | 5 | 9 | 44.4% | 0 | 1 | 1 | 0.0% | — | — | — | — | 2006 | 11 | 13 | 24 | 45.8% | 2 | 4 | 6 | 33.3% | 6 | 2 | 8 | 75.0% | — | — | — | — |
| 20 | 2005 | 27 | 16 | 43 | 62.8% | 7 | 6 | 13 | 53.8% | 1 | 3 | 4 | 25.0% | 1 | 1 | 2 | 50.0% | 2007 | 0 | 3 | 3 | 0.0% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 21 | 2006 | 10 | 16 | 26 | 38.5% | 18 | 6 | 24 | 75.0% | 2 | 2 | 4 | 50.0% | 0 | 2 | 2 | 0.0% | 2008 | 2 | 5 | 7 | 28.6% | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2007 | 2 | 6 | 8 | 25.0% | 2 | 6 | 8 | 25.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2008 | 4 | 5 | 9 | 44.4% | 3 | 2 | 5 | 60.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2009 | 8 | 13 | 21 | 38.1% | 10 | 8 | 18 | 55.6% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2010 | 3 | 7 | 10 | 30.0% | 1 | 3 | 4 | 25.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 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% | — | 20 | 37 | 57 | 35.1% | 3 | 6 | 9 | 33.3% | 10 | 7 | 17 | 58.8% | — | — | — | — |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 140/230 of Anna-Lena Groenefeld's and 40/82 of Jamea Jackson'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 | Anna-Lena Groenefeld | Jamea Jackson | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | |
| 17 | — | —/— | — | — | — | — | — | — | — | — | — | 2004 | 1/7 | 0.0 | 4.0 | 64.0% | 53.8% | 44.4% | 50.0% | 36.8% | 50.4% | 44.2% |
| 18 | — | —/— | — | — | — | — | — | — | — | — | — | 2005 | 9/24 | 1.1 | 2.4 | 66.3% | 62.4% | 42.0% | 56.2% | 56.0% | 55.5% | 45.3% |
| 19 | 2004 | 3/22 | 2.3 | 3.3 | 58.5% | 65.7% | 58.7% | 42.9% | 40.3% | 62.7% | 48.0% | 2006 | 20/38 | 0.7 | 3.1 | 66.5% | 58.3% | 48.9% | 47.6% | 44.4% | 55.1% | 45.1% |
| 20 | 2005 | 13/62 | 3.9 | 4.3 | 56.2% | 70.4% | 51.6% | 58.5% | 40.0% | 62.2% | 45.3% | 2007 | 5/6 | 0.4 | 4.0 | 62.9% | 45.0% | 40.0% | 37.7% | 28.9% | 43.7% | 32.8% |
| 21 | 2006 | 40/56 | 3.2 | 5.1 | 58.9% | 65.4% | 45.4% | 57.8% | 44.8% | 57.3% | 42.9% | 2008 | 5/7 | 1.2 | 4.4 | 62.5% | 52.0% | 37.3% | 43.7% | 55.6% | 46.8% | 40.2% |
| 22 | 2007 | 16/18 | 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 | 2009 | 39/41 | 3.6 | 5.4 | 58.2% | 64.9% | 46.1% | 54.3% | 54.9% | 56.5% | 41.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 25 | 2010 | 14/15 | 2.8 | 7.0 | 55.0% | 63.7% | 38.6% | 47.6% | 48.2% | 52.7% | 40.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| 26 | 2011 | 2/2 | 1.5 | 4.0 | 52.6% | 62.6% | 38.3% | 55.8% | 25.0% | 51.3% | 27.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 140/239 | 3.6 | 5.6 | 56.1% | 66.7% | 45.2% | 54.3% | 47.1% | 57.1% | 41.7% | — | 40/83 | 0.8 | 3.2 | 65.5% | 56.7% | 44.7% | 47.9% | 46.3% | 52.6% | 43.0% |
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 | Anna-Lena Groenefeld | Jamea Jackson | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2003 | 1492 | 100.0 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | -0.13 |
| 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2004 | 1483 | 106.1 | -0.74 | -0.28 | 0.892 | 47.5% | -1 | — | — | 46.7% | -0.07 | 0–3 (0%) | 0–3 (0%) | — | -0.03 |
| 18 | 2003 | 1516 | 115.9 | — | — | — | — | +21 | +1 | — | 38.1% | -0.48 | 1–2 (33%) | 0–3 (0%) | — | -0.25 | 2005 | 1521 | 117.6 | -0.08 | -0.13 | 1.020 | 50.4% | -39 | — | +118 | 43.6% | -0.38 | 3–4 (43%) | 4–1 (80%) | 103.8 | -0.78 |
| 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 | 2006 | 1609 | 128.7 | -0.56 | +0.41 | 1.005 | 50.0% | -63 | -80 | +192 | 53.5% | +0.27 | 6–8 (43%) | 3–8 (27%) | 98.3 | +0.35 |
| 20 | 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 | 2007 | 1540 | 95.2 | -4.69 | -3.50 | 0.583 | 38.5% | -33 | — | — | 7.7% | -3.54 | 0–1 | — | — | -0.44 |
| 21 | 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 | 2008 | 1530 | 101.3 | -3.99 | -0.29 | 0.755 | 43.5% | -25 | — | — | 28.6% | -2.21 | 0–2 | 1–0 | — | -0.20 |
| 22 | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2008 | 1597 | 128.6 | +2.89 | -1.21 | 1.066 | 50.8% | -17 | +136 | — | 51.7% | +0.03 | 0–1 | — | — | -1.01 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 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 | — | 1662 | 120.0 | -1.40 | -0.31 | 0.907 | 47.8% | -44 | -80 | +164 | 44.3% | -0.45 | 9–18 (33%) | 8–12 (40%) | 96.4 | -1.48 |
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 |
|---|---|---|---|---|---|
| Gisela Dulko | 2 | 1 | 3 | Oct 5, 2006 | H2H |
| Maria Sharapova | 1 | 2 | 3 | Jun 17, 2006 | H2H |
| Kristina Brandi | 1 | 2 | 3 | Jun 8, 2005 | H2H |
| Victoria Azarenka | 0 | 2 | 2 | Jul 30, 2008 | H2H |
| Ashley Harkleroad | 1 | 1 | 2 | Aug 8, 2007 | H2H |