H2H data updated: 2026-09-14 00:00 UTC

Greta Arn vs Maria Joao Koehler H2H: 1-0

Greta Arn holds a 1–0 lead over Maria Joao Koehler in their WTA head-to-head. Across 1 main-draw meeting, Greta Arn leads 1–0 on clay. Most recently, Greta Arn won the 2011 Estoril round of 32 6-2 3-6 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.

Greta Arn
Hungary Age 47 Right-Handed 180 cm / 5'11"
H2H
1 – 0
1 main-draw meetings
Maria Joao Koehler
POR Age 33 Left-Handed 174 cm / 5'9"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Greta Arn #48 6-2 3-6 6-3 Maria Joao Koehler #244 Match data Apr 28, 2011* R32 Estoril International → modern equivalent WTA 250 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.

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
Greta Arn #448 #40 1,370 1,694 58 91 38.9% 0 0 0 0 2 2
Maria Joao Koehler #805 #102 654 1,500 2 16 11.1% 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 Greta Arn Maria Joao Koehler
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 2009 0–1 0.0% #505 1,483 0 0
17 — — — — — — — 2010 0–1 0.0% #355 1,465 0 0
18 — — — — — — — 2011 0–1 0.0% #220 1,457 0 0
19 — — — — — — — 2012 1–2 33.3% #128 1,469 0 0
20 — — — — — — — 2013 1–10 9.1% #138 1,408 0 0
21 2000 0–4 0.0% #152 1,468 0 0 2014 0–1 0.0% #682 1,395 0 0
22 2001 4–9 30.8% #118 1,472 0 0 — — — — — — —
23 2002 7–13 35.0% #91 1,498 0 0 — — — — — — —
24 2003 0–2 0.0% #288 1,484 0 0 — — — — — — —
27 2006 1–1 50.0% #225 1,492 0 0 — — — — — — —
28 2007 6–7 46.2% #118 1,517 0 1 — — — — — — —
29 2008 7–5 58.3% #162 1,588 0 1 — — — — — — —
30 2009 1–4 20.0% #235 1,556 0 1 — — — — — — —
31 2010 7–11 38.9% #88 1,574 0 1 — — — — — — —
32 2011 17–15 53.1% #63 1,647 0 2 — — — — — — —
33 2012 7–15 31.8% #114 1,555 0 2 — — — — — — —
34 2013 0–2 0.0% #421 1,536 0 2 — — — — — — —
40 2019 1–3 25.0% #406 1,551 0 2 — — — — — — —

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 Greta Arn Maria Joao Koehler
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 %
16 — — — — — — — — — — — — — — — — — 2009 — — — — 0 1 1 0.0% — — — — — — — —
17 — — — — — — — — — — — — — — — — — 2010 — — — — 0 1 1 0.0% — — — — — — — —
18 — — — — — — — — — — — — — — — — — 2011 — — — — 0 1 1 0.0% — — — — — — — —
19 — — — — — — — — — — — — — — — — — 2012 0 1 1 0.0% 1 1 2 50.0% — — — — — — — —
20 — — — — — — — — — — — — — — — — — 2013 1 2 3 33.3% 0 6 6 0.0% 0 2 2 0.0% — — — —
21 2000 0 1 1 0.0% 0 1 1 0.0% 0 1 1 0.0% 0 1 1 0.0% 2014 — — — — 0 1 1 0.0% — — — — — — — —
22 2001 1 4 5 20.0% 2 4 6 33.3% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — —
23 2002 4 6 10 40.0% 0 3 3 0.0% 2 2 4 50.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
24 2003 0 1 1 0.0% — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
27 2006 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
28 2007 0 2 2 0.0% 6 4 10 60.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
29 2008 1 1 2 50.0% 6 4 10 60.0% — — — — — — — — — — — — — — — — — — — — — — — — —
30 2009 — — — — 1 4 5 20.0% — — — — — — — — — — — — — — — — — — — — — — — — —
31 2010 1 4 5 20.0% 4 6 10 40.0% 2 1 3 66.7% — — — — — — — — — — — — — — — — — — — — —
32 2011 9 9 18 50.0% 8 6 14 57.1% — — — — — — — — — — — — — — — — — — — — — — — — —
33 2012 6 7 13 46.2% 1 5 6 16.7% 0 2 2 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
34 2013 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
40 2019 1 3 4 25.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 24 41 65 36.9% 28 37 65 43.1% 4 7 11 36.4% 2 6 8 25.0% — 1 3 4 25.0% 1 11 12 8.3% 0 2 2 0.0% — — — —

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 Greta Arn Maria Joao Koehler
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 — — — — — — — — — — — — — — — — 2009 1483 96.2 -3.42 +1.34 0.586 39.3% — — — 0.0% -3.50 — 0–1 — +0.14
17 — — — — — — — — — — — — — — — — 2010 1465 99.3 -0.71 -4.28 0.885 47.1% — — — 33.3% -0.67 0–1 — — +0.18
18 — — — — — — — — — — — — — — — — 2011 1457 100.3 -1.20 -2.18 0.910 47.1% — — — 33.3% -1.33 0–1 — — -0.10
19 — — — — — — — — — — — — — — — — 2012 1470 110.6 -0.47 +1.27 0.855 46.3% — — — 33.3% -1.67 — — — -0.28
20 — — — — — — — — — — — — — — — — 2013 1408 96.0 -3.00 -4.05 0.695 42.3% +114 +6 — 16.0% -2.64 1–2 (33%) 1–2 (33%) 98.2 -0.26
21 2000 1468 101.9 — — — — — — — 11.1% -2.33 0–1 0–2 — -0.18 2014 1396 95.4 -0.53 -1.94 0.590 39.0% — — — 0.0% -4.00 — — — +0.13
22 2001 1473 117.1 — — — — +30 +42 — 38.7% -0.84 1–4 (20%) 1–1 — -0.05 — — — — — — — — — — — — — — — —
23 2002 1499 117.8 — — — — +36 -41 +84 37.8% -0.87 2–3 (40%) 0–3 (0%) — -0.17 — — — — — — — — — — — — — — — —
24 2003 1485 99.8 — — — — — — — 20.0% -2.80 0–1 — — -0.13 — — — — — — — — — — — — — — — —
27 2006 1492 101.1 — — — — — — — 50.0% -0.25 — — — +0.06 — — — — — — — — — — — — — — — —
28 2007 1518 107.2 -0.21 -0.11 1.094 51.7% — +44 — 46.9% -0.03 3–3 (50%) 3–2 (60%) 100.7 +0.10 — — — — — — — — — — — — — — — —
29 2008 1588 120.6 -0.21 +0.60 1.018 50.3% — +59 — 59.3% +0.41 1–2 (33%) 1–2 (33%) — -0.12 — — — — — — — — — — — — — — — —
30 2009 1556 108.5 -0.80 -1.13 0.968 49.2% — +39 — 38.5% -0.46 0–3 (0%) 1–1 — -0.31 — — — — — — — — — — — — — — — —
31 2010 1575 114.3 -2.22 -4.60 0.751 44.4% -81 +16 +48 38.1% -1.17 4–2 (67%) 1–1 — +0.44 — — — — — — — — — — — — — — — —
32 2011 1648 125.2 -1.46 -0.86 0.914 48.2% -68 0 — 52.2% -0.34 6–3 (67%) 5–1 (83%) 107.1 -0.73 — — — — — — — — — — — — — — — —
33 2012 1555 113.1 -0.79 -4.12 0.848 46.7% +29 +28 — 34.1% -1.00 1–3 (25%) 1–0 — +0.21 — — — — — — — — — — — — — — — —
34 2013 1536 103.4 -0.19 -2.75 0.551 39.3% — — — 0.0% -4.00 — — — -0.23 — — — — — — — — — — — — — — — —
39 2018 1529 98.1 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
40 2019 1551 101.3 -0.84 -3.20 0.696 42.8% +18 — — 30.0% -2.30 1–1 — — +0.06 — — — — — — — — — — — — — — — —
Career — 1695 120.6 -1.12 -2.14 0.882 47.4% -8 +26 +69 41.4% -0.76 19–26 (42%) 13–13 (50%) 100.2 -0.70 — 1500 98.9 -2.24 -2.66 0.727 43.2% +114 +6 — 19.5% -2.37 1–4 (20%) 1–3 (25%) 94.7 -1.06

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.