H2H data updated: 2026-09-13 00:00 UTC

Elise Mertens vs Lois Boisson H2H: 0-1

Lois Boisson holds a 1–0 lead over Elise Mertens in their WTA head-to-head. Across 1 main-draw meeting, Lois Boisson leads 1–0 on clay. Most recently, Lois Boisson won the 2025 Roland Garros first round 6-4 4-6 6-3.

Belgium Age 30 Right-Handed 179 cm / 5'10"
H2H
0 1
1 main-draw meetings
France Age 23 Right-Handed 175 cm / 5'9"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Lois Boisson #361 6-4 4-6 6-3 Elise Mertens #24 Match data May 27, 2025 R128 Roland Garros Grand Slam Clay

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
Lois Boisson #237 #34 1,354 1,768 17 15 53.1% 0 0 0 0 1 1

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 Lois Boisson
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 2016 3–3 50.0% #125 1,545 0 0
21 2017 30–21 58.8% #35 1,734 0 1
22 2018 44–20 68.8% #12 1,820 0 4 2025 14–6 70.0% #36 1,756 0 1
23 2019 35–25 58.3% #17 1,840 0 5 2026 3–9 25.0% #237 1,690 0 1
24 2020 32–13 71.1% #20 1,934 0 5
25 2021 33–19 63.5% #21 1,845 0 6
26 2022 28–21 57.1% #29 1,789 0 7
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
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 Lois Boisson
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%
21 2017 18 11 29 62.1% 11 6 17 64.7% 1 4 5 20.0%
22 2018 26 14 40 65.0% 14 2 16 87.5% 4 4 8 50.0% 2025 3 4 7 42.9% 11 2 13 84.6%
23 2019 24 15 39 61.5% 4 6 10 40.0% 7 4 11 63.6% 2026 2 3 5 40.0% 1 4 5 20.0% 0 2 2 0.0%
24 2020 23 9 32 71.9% 9 4 13 69.2%
25 2021 22 11 33 66.7% 9 5 14 64.3% 2 3 5 40.0%
26 2022 19 14 33 57.6% 5 3 8 62.5% 4 4 8 50.0%
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%
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% 5 7 12 41.7% 12 6 18 66.7% 0 2 2 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 25/33 of Lois Boisson'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 Lois Boisson
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% —/—
21 2017 49/51 2.8 3.7 61.8% 62.7% 44.6% 52.5% 52.3% 55.8% 46.7% —/—
22 2018 60/64 3.3 4.0 61.0% 66.0% 46.8% 53.5% 47.2% 58.6% 47.0% 2025 13/20 3.4 3.3 66.2% 66.7% 48.1% 46.7% 37.3% 60.1% 42.4%
23 2019 57/60 2.8 4.3 61.2% 67.3% 48.5% 56.8% 46.6% 59.8% 46.2% 2026 12/13 4.8 4.2 60.8% 68.6% 42.6% 54.5% 34.8% 58.5% 38.1%
24 2020 45/45 3.2 3.5 61.0% 70.2% 48.1% 62.3% 52.8% 61.5% 47.3% —/—
25 2021 50/52 3.8 5.9 58.5% 68.3% 43.7% 49.4% 51.2% 57.9% 46.8% —/—
26 2022 47/49 3.3 5.7 57.9% 69.3% 44.9% 46.9% 52.3% 58.8% 46.7% —/—
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% —/—
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% 25/33 4.0 3.7 63.6% 67.6% 45.5% 50.4% 36.1% 59.4% 40.3%

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 Lois Boisson
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
18 2021 1484 99.8
19 2022 1472 95.6
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 2023 1481
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 2024 1596
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 2025 1756 138.1 +1.92 -0.40 1.064 51.2% -202 +94 65.3% +1.04 5–4 (56%) 3–3 (50%) 103.3 -0.12
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 2026 1690 121.0 +0.37 -1.75 0.918 48.3% -114 +39 35.7% -0.90 0–5 (0%) 2–1 (67%) 95.0 -1.20
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
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
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
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
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
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
30 2026 1899 147.2 +2.55 +2.23 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 1769 129.1 +1.18 -1.05 0.993 49.8% -165 +79 54.5% +0.33 5–9 (36%) 5–4 (56%) 99.1 -4.13

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.