H2H data updated: 2026-09-14 00:00 UTC
Naomi Osaka vs Elise Mertens: 7–3 excluding walkovers; 7–4 including 1 walkover. Across 11 main-draw results including walkovers, Naomi Osaka leads 5–4 on hard courts and 2–0 on grass. Most recently, Naomi Osaka won the 2026 US Open third round 6-3 3-6 7-5.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Naomi Osaka | 6-3 3-6 7-5 | Elise Mertens | Match data | Sep 5, 2026 | R32 | US Open | Grand Slam | Hard |
| Naomi Osaka | 6-1 6-2 | Elise Mertens | Match data | Aug 7, 2026 | R32 | Canadian Open | WTA 1000 | Hard |
| Naomi Osaka | 6-3 6-3 | Elise Mertens | Match data | Jun 23, 2026 | R16 | Bad Homburg Open | WTA 500 | Grass |
| Elise Mertens | 6-3 6-4 | Naomi Osaka | Match data | Aug 9, 2024* | R32 | Canadian Open | WTA 1000 | Hard |
| Naomi Osaka | 6-2 6-4 | Elise Mertens | Match data | Jun 13, 2024* | R32 | Libéma Open | WTA 250 | Grass |
| Elise Mertens | 7-5 6-4 | Naomi Osaka | Match data | Mar 11, 2024* | R32 | Indian Wells Open | WTA 1000 | Hard |
| Naomi Osaka | 6-3 6-3 | Elise Mertens | Match data | Mar 30, 2021* | R16 | Miami Open | WTA 1000 | Hard |
| Elise Mertens | (w/o) | Naomi Osaka | Match data | Feb 5, 2021* | SF | Gippsland Trophy | WTA 500 | Hard |
| Naomi Osaka | 6-2 7-6(5) | Elise Mertens | Match data | Aug 28, 2020* | SF | Cincinnati Open | Premier 5 → modern equivalent WTA 1000 | Hard |
| Naomi Osaka | 6-4 6-1 | Elise Mertens | Match data | Sep 21, 2019* | SF | Pan Pacific Open | Premier → modern equivalent WTA 500 | Hard |
| Elise Mertens | 6-4 1-6 6-4 | Naomi Osaka | Match data | Sep 26, 2017* | R64 | Wuhan Open | Premier 5 → modern equivalent WTA 1000 | 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Naomi Osaka | #13 | #1 | 7,985 | 2,179 | 250 | 137 | 64.6% | 4 | 2 | 0 | 1 | 0 | 7 |
| Elise Mertens | #20 | #12 | 3,685 | 2,000 | 320 | 205 | 61.0% | 0 | 0 | 0 | 2 | 8 | 10 |
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 | Naomi Osaka | Elise Mertens | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | 2014 | 2–2 | 50.0% | #260 | 1,530 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 2015 | 0–2 | 0.0% | #144 | 1,508 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 2016 | 20–13 | 60.6% | #48 | 1,700 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | 2017 | 19–22 | 46.3% | #68 | 1,695 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 2018 | 40–20 | 66.7% | #5 | 1,902 | 1 | 2 | 2016 | 3–3 | 50.0% | #125 | 1,545 | 0 | 0 |
| 21 | 2019 | 40–13 | 75.5% | #3 | 2,047 | 2 | 5 | 2017 | 30–21 | 58.8% | #35 | 1,734 | 0 | 1 |
| 22 | 2020 | 16–3 | 84.2% | #3 | 2,111 | 3 | 6 | 2018 | 44–20 | 68.8% | #12 | 1,820 | 0 | 4 |
| 23 | 2021 | 20–8 | 71.4% | #13 | 2,040 | 4 | 7 | 2019 | 35–25 | 58.3% | #17 | 1,840 | 0 | 5 |
| 24 | 2022 | 15–11 | 57.7% | #42 | 1,933 | 4 | 7 | 2020 | 32–13 | 71.1% | #20 | 1,934 | 0 | 5 |
| 25 | — | — | — | — | — | — | — | 2021 | 33–19 | 63.5% | #21 | 1,845 | 0 | 6 |
| 26 | 2024 | 21–17 | 55.3% | #57 | 1,872 | 4 | 7 | 2022 | 28–21 | 57.1% | #29 | 1,789 | 0 | 7 |
| 27 | 2025 | 30–15 | 66.7% | #16 | 1,959 | 4 | 7 | 2023 | 26–21 | 55.3% | #29 | 1,818 | 0 | 8 |
| 28 | 2026 | 27–11 | 71.1% | #13 | 2,051 | 4 | 7 | 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 |
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 | Naomi Osaka | Elise Mertens | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Yr | Hard | Clay | Grass | |||||||||||||||||||
| 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 | 2014 | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 2015 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 2016 | 18 | 11 | 29 | 62.1% | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2017 | 13 | 13 | 26 | 50.0% | 2 | 5 | 7 | 28.6% | 4 | 4 | 8 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2018 | 29 | 13 | 42 | 69.0% | 5 | 4 | 9 | 55.6% | 6 | 3 | 9 | 66.7% | 2016 | 0 | 1 | 1 | 0.0% | — | — | — | — | 3 | 2 | 5 | 60.0% |
| 21 | 2019 | 30 | 7 | 37 | 81.1% | 9 | 4 | 13 | 69.2% | 1 | 2 | 3 | 33.3% | 2017 | 18 | 11 | 29 | 62.1% | 11 | 6 | 17 | 64.7% | 1 | 4 | 5 | 20.0% |
| 22 | 2020 | 16 | 3 | 19 | 84.2% | — | — | — | — | — | — | — | — | 2018 | 26 | 14 | 40 | 65.0% | 14 | 2 | 16 | 87.5% | 4 | 4 | 8 | 50.0% |
| 23 | 2021 | 18 | 5 | 23 | 78.3% | 2 | 3 | 5 | 40.0% | — | — | — | — | 2019 | 24 | 15 | 39 | 61.5% | 4 | 6 | 10 | 40.0% | 7 | 4 | 11 | 63.6% |
| 24 | 2022 | 14 | 9 | 23 | 60.9% | 1 | 2 | 3 | 33.3% | — | — | — | — | 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 | 2024 | 13 | 9 | 22 | 59.1% | 5 | 5 | 10 | 50.0% | 3 | 3 | 6 | 50.0% | 2022 | 19 | 14 | 33 | 57.6% | 5 | 3 | 8 | 62.5% | 4 | 4 | 8 | 50.0% |
| 27 | 2025 | 24 | 9 | 33 | 72.7% | 3 | 3 | 6 | 50.0% | 3 | 3 | 6 | 50.0% | 2023 | 20 | 15 | 35 | 57.1% | 5 | 4 | 9 | 55.6% | 1 | 2 | 3 | 33.3% |
| 28 | 2026 | 12 | 6 | 18 | 66.7% | 7 | 3 | 10 | 70.0% | 8 | 2 | 10 | 80.0% | 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 | — | 189 | 89 | 278 | 68.0% | 36 | 31 | 67 | 53.7% | 25 | 17 | 42 | 59.5% | — | 206 | 128 | 334 | 61.7% | 74 | 44 | 118 | 62.7% | 40 | 33 | 73 | 54.8% |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 350/386 of Naomi Osaka's and 495/526 of Elise Mertens'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 | Naomi Osaka | Elise Mertens | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | |
| 16 | 2014 | 4/4 | 4.3 | 1.8 | 55.4% | 65.3% | 44.8% | 33.6% | 49.2% | 55.5% | 41.0% | — | —/— | — | — | — | — | — | — | — | — | — |
| 18 | 2016 | 33/33 | 4.8 | 2.5 | 55.2% | 69.6% | 48.3% | 54.8% | 51.5% | 59.9% | 43.8% | — | —/— | — | — | — | — | — | — | — | — | — |
| 19 | 2017 | 40/41 | 4.2 | 2.5 | 55.9% | 67.2% | 45.7% | 45.6% | 46.3% | 57.5% | 40.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 20 | 2018 | 55/60 | 4.7 | 2.1 | 59.7% | 71.1% | 48.8% | 55.8% | 55.7% | 61.9% | 45.3% | 2016 | 6/6 | 2.8 | 4.7 | 55.3% | 61.0% | 47.1% | 44.4% | 67.4% | 54.9% | 48.4% |
| 21 | 2019 | 50/53 | 7.0 | 1.9 | 60.2% | 73.1% | 47.9% | 56.3% | 51.0% | 63.1% | 44.4% | 2017 | 49/51 | 2.8 | 3.7 | 61.8% | 62.7% | 44.6% | 52.5% | 52.3% | 55.8% | 46.7% |
| 22 | 2020 | 18/19 | 7.8 | 2.5 | 59.0% | 76.0% | 53.0% | 64.2% | 43.2% | 66.5% | 42.5% | 2018 | 60/64 | 3.3 | 4.0 | 61.0% | 66.0% | 46.8% | 53.5% | 47.2% | 58.6% | 47.0% |
| 23 | 2021 | 21/28 | 6.5 | 2.8 | 53.5% | 76.2% | 52.2% | 59.4% | 52.6% | 64.9% | 43.6% | 2019 | 57/60 | 2.8 | 4.3 | 61.2% | 67.3% | 48.5% | 56.8% | 46.6% | 59.8% | 46.2% |
| 24 | 2022 | 22/26 | 5.7 | 2.5 | 51.4% | 76.9% | 47.4% | 61.9% | 44.1% | 62.7% | 41.4% | 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 | 2024 | 36/38 | 6.5 | 2.7 | 54.0% | 75.1% | 51.1% | 56.3% | 50.1% | 64.0% | 40.4% | 2022 | 47/49 | 3.3 | 5.7 | 57.9% | 69.3% | 44.9% | 46.9% | 52.3% | 58.8% | 46.7% |
| 27 | 2025 | 34/46 | 6.6 | 2.9 | 56.9% | 74.7% | 49.3% | 52.5% | 53.6% | 63.5% | 45.2% | 2023 | 47/47 | 3.8 | 6.6 | 54.0% | 68.2% | 43.7% | 49.7% | 48.3% | 57.0% | 46.4% |
| 28 | 2026 | 37/38 | 5.9 | 2.5 | 58.2% | 72.9% | 49.6% | 52.0% | 47.3% | 63.2% | 42.7% | 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 | — | 350/388 | 5.8 | 2.4 | 56.9% | 72.6% | 48.9% | 54.7% | 50.3% | 62.3% | 43.1% | — | 495/526 | 3.5 | 4.7 | 58.6% | 67.9% | 45.9% | 53.8% | 48.7% | 58.8% | 46.0% |
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 | Naomi Osaka | Elise Mertens | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 2014 | 1531 | 113.5 | +0.17 | +0.57 | 0.923 | 48.4% | +17 | — | — | 45.5% | 0.00 | 2–1 (67%) | 1–0 | — | -0.19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 2015 | 1509 | 102.0 | — | — | — | — | — | — | — | 20.0% | -1.80 | 0–1 | — | — | 0.00 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 2016 | 1700 | 128.3 | +3.18 | +0.66 | 1.091 | 51.9% | -10 | -101 | — | 60.0% | +0.65 | 4–5 (44%) | 5–6 (45%) | 101.0 | +0.04 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2017 | 1696 | 132.1 | +1.30 | -2.12 | 0.947 | 48.9% | +6 | -84 | -47 | 45.8% | -0.18 | 5–4 (56%) | 2–5 (29%) | 97.8 | -1.51 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2018 | 1902 | 160.7 | +5.21 | +2.94 | 1.190 | 53.8% | +17 | -236 | -168 | 67.5% | +1.35 | 4–3 (57%) | 4–4 (50%) | 99.8 | -2.09 | 2016 | 1546 | 114.6 | +0.31 | +2.24 | 1.071 | 51.6% | — | — | +187 | 53.3% | +0.73 | 1–2 (33%) | 1–0 | — | -0.48 |
| 21 | 2019 | 2047 | 154.9 | +5.80 | +1.63 | 1.202 | 53.6% | +30 | -229 | -350 | 68.4% | +1.22 | 17–2 (89%) | 10–4 (71%) | 116.1 | +0.60 | 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 |
| 22 | 2020 | 2112 | 156.0 | +6.66 | +1.24 | 1.267 | 54.0% | +19 | — | — | 71.7% | +1.61 | 9–1 (90%) | 3–5 (38%) | 103.1 | -0.42 | 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 |
| 23 | 2021 | 2040 | 154.1 | +6.00 | +1.08 | 1.240 | 54.0% | +82 | -235 | — | 72.2% | +1.43 | 3–3 (50%) | 2–2 (50%) | 95.5 | -0.04 | 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 |
| 24 | 2022 | 1934 | 147.8 | +4.77 | +0.02 | 1.112 | 52.0% | +91 | -156 | — | 57.4% | +0.81 | 4–1 (80%) | 0–2 | — | -0.62 | 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 | 2024 | 1873 | 146.8 | +5.89 | -1.17 | 1.122 | 52.2% | +76 | -98 | -157 | 56.3% | +0.71 | 3–5 (38%) | 4–8 (33%) | 94.1 | -2.05 | 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 | 2025 | 1960 | 153.1 | +4.79 | +1.97 | 1.240 | 54.1% | +52 | -122 | -247 | 65.1% | +1.10 | 11–9 (55%) | 10–6 (63%) | 102.1 | +0.96 | 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 | 2026 | 2051 | 158.1 | +5.15 | +1.24 | 1.160 | 53.0% | -3 | -102 | -109 | 66.7% | +1.12 | 8–2 (80%) | 7–3 (70%) | 109.2 | -0.78 | 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 | 155.8 | +3.19 | +1.74 | 1.111 | 52.0% | -32 | +16 | +59 | 63.3% | +0.97 | 7–10 (41%) | 10–7 (59%) | 98.4 | -1.14 |
| 30 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2026 | 1899 | 147.1 | +2.55 | +2.24 | 1.122 | 52.2% | -41 | -27 | +78 | 59.2% | +0.78 | 6–6 (50%) | 3–2 (60%) | 101.1 | +1.71 |
| Career | — | 2179 | 157.0 | +4.72 | +0.85 | 1.143 | 52.6% | +34 | -156 | -154 | 62.7% | +0.95 | 70–37 (65%) | 48–45 (52%) | 107.2 | -1.63 | — | 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 |
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 |
|---|---|---|---|---|---|
| Elise Mertens | 7 | 4 | 11 | Sep 5, 2026 | H2H |
| Karolina Muchova | 4 | 4 | 8 | Jul 7, 2026 | H2H |
| Elina Svitolina | 5 | 3 | 8 | Aug 5, 2025 | H2H |
| Angelique Kerber | 2 | 5 | 7 | Jul 29, 2024 | H2H |
| Karolina Pliskova | 2 | 5 | 7 | Feb 16, 2024 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Aryna Sabalenka | 2 | 11 | 13 | Jul 6, 2025 | H2H |
| Naomi Osaka | 4 | 7 | 11 | Sep 5, 2026 | H2H |
| Elena Rybakina | 2 | 7 | 9 | Jul 4, 2026 | H2H |
| Elina Svitolina | 4 | 5 | 9 | Jul 4, 2025 | H2H |
| Daria Kasatkina | 2 | 6 | 8 | Feb 10, 2026 | H2H |