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

Junri Namigata vs Valentini Grammatikopoulou

Compare the head-to-head record, career totals, season-by-season performance, and match log for Junri Namigata vs Valentini Grammatikopoulou.

Japan Age 44 N/A 170 cm / 5'7"
H2H
0 0
0 main-draw meetings
Greece Age 29 Right-Handed 164 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Valentini Grammatikopoulou #208 4-6 6-4 6-1 Junri Namigata #241 Match data Oct 8, 2017 Q2 Q Hong Kong Open International modern equivalent WTA 250 Hard

1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. 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
Junri Namigata #1,159 #105 641 1,520 3 19 13.6% 0 0 0 0 0 0
Valentini Grammatikopoulou #470 #143 443 1,614 2 15 11.8% 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 Junri Namigata Valentini Grammatikopoulou
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 2017 0–2 0.0% #209 1,531 0 0
21 2018 1–6 14.3% #171 1,582 0 0
22 2005 0–1 0.0% #250 1,491 0 0
23 2006 2–2 50.0% #164 1,513 0 0
24 2007 0–1 0.0% #186 1,496 0 0 2021 1–3 25.0% #183 1,525 0 0
25 2008 0–1 0.0% #264 1,478 0 0 2022 0–1 0.0% #198 1,556 0 0
26 2009 0–1 0.0% #186 1,467 0 0 2023 0–2 0.0% #220 1,468 0 0
27 2010 1–3 25.0% #112 1,462 0 0
28 2011 0–4 0.0% #250 1,415 0 0
29 2026 0–1 0.0% #470 1,416 0 0
32 2015 0–1 0.0% #294 1,404 0 0
33 2016 0–2 0.0% #254 1,492 0 0
35 2018 0–2 0.0% #280 1,432 0 0
36 2019 0–1 0.0% #347 1,408 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 Junri Namigata Valentini Grammatikopoulou
Yr HardClayGrass Yr HardClayGrass
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
20 2017 0 2 2 0.0%
21 2018 0 3 3 0.0% 1 2 3 33.3% 0 1 1 0.0%
22 2005 0 1 1 0.0%
23 2006 2 2 4 50.0%
24 2007 0 1 1 0.0% 2021 1 2 3 33.3% 0 1 1 0.0%
25 2008 0 1 1 0.0% 2022 0 1 1 0.0%
26 2009 0 1 1 0.0% 2023 0 2 2 0.0%
27 2010 1 3 4 25.0%
28 2011 0 3 3 0.0% 0 1 1 0.0%
29 2026 0 1 1 0.0%
32 2015 0 1 1 0.0%
33 2016 0 2 2 0.0%
35 2018 0 2 2 0.0%
36 2019 0 1 1 0.0%
Career 3 18 21 14.3% 0 1 1 0.0% 1 8 9 11.1% 1 6 7 14.3% 0 1 1 0.0%

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 17/17 of Junri Namigata's and 16/17 of Valentini Grammatikopoulou'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 Junri Namigata Valentini Grammatikopoulou
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%
20 —/— 2017 1/2 0.0 7.0 63.2% 62.7% 33.3% 56.3% 33.3% 51.9% 41.5%
21 —/— 2018 7/7 0.3 4.1 70.5% 49.1% 37.6% 40.6% 46.1% 45.5% 41.3%
24 2007 1/1 1.0 5.0 59.2% 51.1% 51.6% 50.0% 33.3% 51.3% 40.5% 2021 4/4 1.0 3.0 70.1% 48.9% 42.3% 40.7% 52.5% 46.7% 45.2%
25 2008 1/1 1.0 5.0 47.9% 60.9% 36.0% 0.0% 100.0% 47.9% 34.0% 2022 1/1 0.0 0.0 69.6% 41.0% 52.9% 54.5% 50.0% 44.6% 36.5%
26 2009 1/1 0.0 8.0 47.5% 60.7% 35.5% 50.0% 20.0% 47.5% 42.1% 2023 2/2 0.5 2.5 57.6% 42.3% 41.9% 48.1% 50.5% 42.1% 51.0%
27 2010 4/4 1.3 4.5 60.7% 56.7% 38.4% 54.9% 45.3% 49.3% 42.3% —/—
28 2011 4/4 1.3 4.0 61.0% 54.7% 29.1% 42.5% 46.4% 44.9% 35.6% —/—
29 —/— 2026 1/1 0.0 7.0 54.0% 53.7% 40.0% 40.0% 45.5% 47.4% 48.2%
32 2015 1/1 0.0 6.0 59.7% 59.5% 44.0% 40.0% 36.4% 53.2% 43.7% —/—
33 2016 2/2 0.0 5.0 62.4% 59.0% 46.7% 43.2% 63.6% 53.4% 37.5% —/—
35 2018 2/2 0.5 3.0 65.6% 49.4% 32.9% 53.9% 50.0% 43.4% 41.9% —/—
36 2019 1/1 0.0 7.0 59.8% 54.7% 39.5% 50.0% 53.8% 48.6% 48.1% —/—
Career 17/22 0.8 4.8 59.8% 55.8% 37.4% 45.5% 49.3% 48.2% 40.0% 16/17 0.4 3.8 67.3% 48.8% 40.1% 43.4% 47.7% 45.8% 43.6%

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 Junri Namigata Valentini Grammatikopoulou
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
20 2017 1532 107.1 -2.34 -1.66 0.863 46.7% 20.0% -1.20 0–1 0–2 +0.04
21 2018 1582 104.4 -5.30 -1.51 0.758 43.4% -17 +21 23.5% -2.29 1–2 (33%) +0.22
22 2005 1492 99.5 0.0% -4.00 -0.14 2019 1525 93.4
23 2006 1514 96.7 +13 28.6% -2.29 1–0 -0.07 2020 1555
24 2007 1497 97.0 -0.49 -2.30 0.833 46.0% 0.0% -3.00 +0.10 2021 1526 105.4 -2.51 -1.06 0.847 46.1% -6 33.3% -1.33 0–1 -0.11
25 2008 1479 95.2 -0.14 -0.04 0.654 41.1% 0.0% -3.50 +0.20 2022 1556 91.4 -0.23 -0.22 0.660 40.7% 0.0% -4.50 -0.02
26 2009 1467 99.0 -0.68 -2.88 0.801 44.4% 0.0% -3.00 +0.01 2023 1468 99.6 -0.46 -0.63 0.881 46.7% 0.0% -2.25 0–1 +0.20
27 2010 1463 104.1 -2.42 +0.17 0.834 46.1% +18 25.0% -2.00 -0.01 2024 1435 98.5
28 2011 1415 89.3 -3.40 -2.26 0.647 40.4% +25 11.1% -3.33 0–1 +0.41 2025 1423 98.5
29 2026 1416 103.0 -3.14 +0.34 0.916 47.8% 0.0% -1.50 0–1 +0.04
32 2015 1404 99.1 -2.05 -1.20 0.933 48.1% 0.0% -2.00 0–1 +0.08
33 2016 1492 105.6 +0.71 -2.40 0.804 46.3% 20.0% -1.40 0–1 +0.09
34 2017 1480 100.6
35 2018 1433 94.2 -1.86 -2.06 0.741 43.1% 0.0% -3.50 +0.13
36 2019 1408 97.1 -2.72 -0.94 0.937 48.4% 33.3% -1.33 0–1 +0.06
37 2020 1395 98.8
Career 1520 94.9 -1.86 -1.45 0.771 44.3% +18 15.2% -2.57 1–3 (25%) 0–1 +3.91 1615 101.0 -3.36 -1.10 0.806 44.8% -12 +21 20.5% -2.00 1–4 (20%) 0–4 (0%) 92.3 +2.18

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.