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

Elise Mertens vs Valentini Grammatikopoulou H2H: 1-0

Elise Mertens holds a 1–0 lead over Valentini Grammatikopoulou in their WTA head-to-head. Across 1 main-draw meeting, Elise Mertens leads 1–0 on hard courts. Most recently, Elise Mertens won the 2021 US Open second round 6-2 6-2.

Belgium Age 30 Right-Handed 179 cm / 5'10"
H2H
1 0
1 main-draw meetings
Greece Age 29 Right-Handed 164 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Elise Mertens #16 6-2 6-2 Valentini Grammatikopoulou #234 Match data Sep 2, 2021* R64 US Open Grand Slam 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
Elise Mertens #20 #12 3,685 2,000 320 205 61.0% 0 0 0 2 8 10
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 Elise Mertens Valentini Grammatikopoulou
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 2016 3–3 50.0% #125 1,545 0 0 2017 0–2 0.0% #209 1,531 0 0
21 2017 30–21 58.8% #35 1,734 0 1 2018 1–6 14.3% #171 1,582 0 0
22 2018 44–20 68.8% #12 1,820 0 4
23 2019 35–25 58.3% #17 1,840 0 5
24 2020 32–13 71.1% #20 1,934 0 5 2021 1–3 25.0% #183 1,525 0 0
25 2021 33–19 63.5% #21 1,845 0 6 2022 0–1 0.0% #198 1,556 0 0
26 2022 28–21 57.1% #29 1,789 0 7 2023 0–2 0.0% #220 1,468 0 0
27 2023 26–21 55.3% #29 1,818 0 8
28 2024 27–25 51.9% #34 1,788 0 8
29 2025 36–20 64.3% #20 1,866 0 10 2026 0–1 0.0% #470 1,416 0 0
30 2026 26–17 60.5% #20 1,898 0 10

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 Elise Mertens 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 2016 0 1 1 0.0% 3 2 5 60.0% 2017 0 2 2 0.0%
21 2017 18 11 29 62.1% 11 6 17 64.7% 1 4 5 20.0% 2018 0 3 3 0.0% 1 2 3 33.3% 0 1 1 0.0%
22 2018 26 14 40 65.0% 14 2 16 87.5% 4 4 8 50.0%
23 2019 24 15 39 61.5% 4 6 10 40.0% 7 4 11 63.6%
24 2020 23 9 32 71.9% 9 4 13 69.2% 2021 1 2 3 33.3% 0 1 1 0.0%
25 2021 22 11 33 66.7% 9 5 14 64.3% 2 3 5 40.0% 2022 0 1 1 0.0%
26 2022 19 14 33 57.6% 5 3 8 62.5% 4 4 8 50.0% 2023 0 2 2 0.0%
27 2023 20 15 35 57.1% 5 4 9 55.6% 1 2 3 33.3%
28 2024 18 16 34 52.9% 6 5 11 54.5% 3 4 7 42.9%
29 2025 22 13 35 62.9% 6 5 11 54.5% 8 2 10 80.0% 2026 0 1 1 0.0%
30 2026 14 9 23 60.9% 5 4 9 55.6% 7 4 11 63.6%
Career 206 128 334 61.7% 74 44 118 62.7% 40 33 73 54.8% 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 495/526 of Elise Mertens'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 Elise Mertens 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 2016 6/6 2.8 4.7 55.3% 61.0% 47.1% 44.4% 67.4% 54.9% 48.4% 2017 1/2 0.0 7.0 63.2% 62.7% 33.3% 56.3% 33.3% 51.9% 41.5%
21 2017 49/51 2.8 3.7 61.8% 62.7% 44.6% 52.5% 52.3% 55.8% 46.7% 2018 7/7 0.3 4.1 70.5% 49.1% 37.6% 40.6% 46.1% 45.5% 41.3%
22 2018 60/64 3.3 4.0 61.0% 66.0% 46.8% 53.5% 47.2% 58.6% 47.0% —/—
23 2019 57/60 2.8 4.3 61.2% 67.3% 48.5% 56.8% 46.6% 59.8% 46.2% —/—
24 2020 45/45 3.2 3.5 61.0% 70.2% 48.1% 62.3% 52.8% 61.5% 47.3% 2021 4/4 1.0 3.0 70.1% 48.9% 42.3% 40.7% 52.5% 46.7% 45.2%
25 2021 50/52 3.8 5.9 58.5% 68.3% 43.7% 49.4% 51.2% 57.9% 46.8% 2022 1/1 0.0 0.0 69.6% 41.0% 52.9% 54.5% 50.0% 44.6% 36.5%
26 2022 47/49 3.3 5.7 57.9% 69.3% 44.9% 46.9% 52.3% 58.8% 46.7% 2023 2/2 0.5 2.5 57.6% 42.3% 41.9% 48.1% 50.5% 42.1% 51.0%
27 2023 47/47 3.8 6.6 54.0% 68.2% 43.7% 49.7% 48.3% 57.0% 46.4% —/—
28 2024 52/52 3.5 4.8 54.9% 67.7% 47.2% 49.2% 43.5% 58.6% 43.5% —/—
29 2025 42/57 4.7 4.2 55.7% 70.9% 46.7% 61.7% 45.9% 60.1% 44.3% 2026 1/1 0.0 7.0 54.0% 53.7% 40.0% 40.0% 45.5% 47.4% 48.2%
30 2026 40/43 4.0 4.4 59.7% 71.5% 43.3% 59.2% 45.6% 60.2% 44.6% —/—
Career 495/526 3.5 4.7 58.6% 67.9% 45.9% 53.8% 48.7% 58.8% 46.0% 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 Elise Mertens 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 2016 1546 114.6 +0.31 +2.24 1.071 51.6% +187 53.3% +0.73 1–2 (33%) 1–0 -0.48 2017 1532 107.1 -2.34 -1.66 0.863 46.7% 20.0% -1.20 0–1 0–2 +0.04
21 2017 1734 133.6 +0.24 +2.71 1.057 51.3% -42 -32 -72 54.4% +0.38 10–6 (63%) 6–8 (43%) 104.5 -1.32 2018 1582 104.4 -5.30 -1.51 0.758 43.4% -17 +21 23.5% -2.29 1–2 (33%) +0.22
22 2018 1820 149.2 +2.19 +3.65 1.136 52.8% -27 +78 -134 64.7% +1.14 11–6 (65%) 10–9 (53%) 102.7 +1.85 2019 1525 93.4
23 2019 1841 151.4 +3.21 +3.08 1.150 52.7% +18 -36 -88 58.2% +0.82 9–12 (43%) 6–9 (40%) 95.6 -0.24 2020 1555
24 2020 1934 157.8 +3.90 +3.73 1.228 54.2% +19 -60 67.6% +1.38 7–5 (58%) 2–3 (40%) 98.9 -0.09 2021 1526 105.4 -2.51 -1.06 0.847 46.1% -6 33.3% -1.33 0–1 -0.11
25 2021 1845 151.6 +1.62 +4.16 1.112 52.2% +60 +64 -104 60.3% +0.89 10–6 (63%) 8–6 (57%) 101.2 -0.07 2022 1556 91.4 -0.23 -0.22 0.660 40.7% 0.0% -4.50 -0.02
26 2022 1789 144.1 +1.46 +3.03 1.134 52.5% +31 +82 -28 55.7% +0.70 7–9 (44%) 4–5 (44%) 94.2 +1.98 2023 1468 99.6 -0.46 -0.63 0.881 46.7% 0.0% -2.25 0–1 +0.20
27 2023 1819 147.2 +0.37 +2.82 1.081 51.6% +29 +20 -94 56.6% +0.57 6–8 (43%) 7–3 (70%) 100.3 -0.17 2024 1435 98.5
28 2024 1789 149.2 +1.83 +1.03 1.051 50.7% +1 +82 -81 54.0% +0.28 8–9 (47%) 1–5 (17%) 96.0 -1.04 2025 1423 98.5
29 2025 1867 155.7 +3.19 +1.74 1.111 52.0% -32 +16 +59 63.3% +0.97 7–10 (41%) 10–7 (59%) 98.4 -1.11 2026 1416 103.0 -3.14 +0.34 0.916 47.8% 0.0% -1.50 0–1 +0.04
30 2026 1899 147.2 +2.55 +2.24 1.122 52.2% -42 -27 +78 59.2% +0.78 6–6 (50%) 3–2 (60%) 101.1 +1.70
Career 2000 153.9 +2.02 +2.84 1.116 52.2% +3 +18 -22 59.4% +0.80 82–79 (51%) 58–57 (50%) 98.9 +0.19 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.