H2H data updated: 2026-09-13 00:00 UTC
Naomi Osaka holds a 1–0 lead over Kai-Chen Chang in their WTA head-to-head. Across 1 main-draw meeting, Naomi Osaka leads 1–0 on hard courts. Most recently, Naomi Osaka won the 2017 Dubai Tennis Championships first round 6-2 6-4.
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 | 6-2 6-4 | Kai-Chen Chang | Match data | Feb 21, 2017* | R64 | Dubai Tennis Championships | 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 | 251 | 136 | 64.9% | 4 | 2 | 0 | 1 | 1 | 8 |
| Kai-Chen Chang | #1,233 | #82 | 808 | 1,646 | 32 | 59 | 35.2% | 0 | 0 | 0 | 0 | 0 | 0 |
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 | Kai-Chen Chang | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 2009 | 5–5 | 50.0% | #94 | 1,558 | 0 | 0 |
| 19 | 2017 | 19–22 | 46.3% | #68 | 1,695 | 0 | 0 | 2010 | 9–15 | 37.5% | #117 | 1,565 | 0 | 0 |
| 20 | 2018 | 40–20 | 66.7% | #5 | 1,902 | 1 | 2 | 2011 | 1–8 | 11.1% | #148 | 1,488 | 0 | 0 |
| 21 | 2019 | 40–13 | 75.5% | #3 | 2,047 | 2 | 5 | 2012 | 9–11 | 45.0% | #86 | 1,579 | 0 | 0 |
| 22 | 2020 | 16–3 | 84.2% | #3 | 2,111 | 3 | 6 | 2013 | 1–4 | 20.0% | #621 | 1,531 | 0 | 0 |
| 23 | 2021 | 20–8 | 71.4% | #13 | 2,040 | 4 | 7 | — | — | — | — | — | — | — |
| 24 | 2022 | 15–11 | 57.7% | #42 | 1,933 | 4 | 7 | 2015 | 1–2 | 33.3% | #134 | 1,529 | 0 | 0 |
| 25 | — | — | — | — | — | — | — | 2016 | 3–4 | 42.9% | #131 | 1,602 | 0 | 0 |
| 26 | 2024 | 21–17 | 55.3% | #57 | 1,872 | 4 | 7 | 2017 | 2–9 | 18.2% | #219 | 1,536 | 0 | 0 |
| 27 | 2025 | 31–14 | 68.9% | #16 | 1,965 | 4 | 8 | 2018 | 1–1 | 50.0% | #401 | 1,536 | 0 | 0 |
| 28 | 2026 | 27–11 | 71.1% | #13 | 2,052 | 4 | 8 | — | — | — | — | — | — | — |
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 | Kai-Chen Chang | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | — | — | — | — | 2009 | 5 | 5 | 10 | 50.0% | — | — | — | — | — | — | — | — |
| 19 | 2017 | 13 | 13 | 26 | 50.0% | 2 | 5 | 7 | 28.6% | 4 | 4 | 8 | 50.0% | 2010 | 7 | 9 | 16 | 43.8% | 1 | 4 | 5 | 20.0% | 1 | 2 | 3 | 33.3% |
| 20 | 2018 | 29 | 13 | 42 | 69.0% | 5 | 4 | 9 | 55.6% | 6 | 3 | 9 | 66.7% | 2011 | 1 | 5 | 6 | 16.7% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% |
| 21 | 2019 | 30 | 7 | 37 | 81.1% | 9 | 4 | 13 | 69.2% | 1 | 2 | 3 | 33.3% | 2012 | 9 | 8 | 17 | 52.9% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% |
| 22 | 2020 | 16 | 3 | 19 | 84.2% | — | — | — | — | — | — | — | — | 2013 | 1 | 4 | 5 | 20.0% | — | — | — | — | — | — | — | — |
| 23 | 2021 | 18 | 5 | 23 | 78.3% | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2022 | 14 | 9 | 23 | 60.9% | 1 | 2 | 3 | 33.3% | — | — | — | — | 2015 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — |
| 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2016 | 3 | 4 | 7 | 42.9% | — | — | — | — | — | — | — | — |
| 26 | 2024 | 13 | 9 | 22 | 59.1% | 5 | 5 | 10 | 50.0% | 3 | 3 | 6 | 50.0% | 2017 | 2 | 7 | 9 | 22.2% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% |
| 27 | 2025 | 25 | 8 | 33 | 75.8% | 3 | 3 | 6 | 50.0% | 3 | 3 | 6 | 50.0% | 2018 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| 28 | 2026 | 12 | 6 | 18 | 66.7% | 7 | 3 | 10 | 70.0% | 8 | 2 | 10 | 80.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 190 | 88 | 278 | 68.3% | 36 | 31 | 67 | 53.7% | 25 | 17 | 42 | 59.5% | — | 30 | 45 | 75 | 40.0% | 1 | 7 | 8 | 12.5% | 1 | 7 | 8 | 12.5% |
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 84/91 of Kai-Chen Chang'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 | Kai-Chen Chang | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | 2009 | 9/10 | 1.0 | 4.1 | 64.7% | 59.0% | 43.6% | 58.2% | 54.3% | 53.4% | 47.7% |
| 19 | 2017 | 40/41 | 4.2 | 2.5 | 55.9% | 67.2% | 45.7% | 45.6% | 46.3% | 57.5% | 40.2% | 2010 | 22/24 | 1.6 | 6.8 | 58.9% | 58.6% | 41.8% | 54.0% | 46.2% | 51.7% | 44.6% |
| 20 | 2018 | 55/60 | 4.7 | 2.1 | 59.7% | 71.1% | 48.8% | 55.8% | 55.7% | 61.9% | 45.3% | 2011 | 9/9 | 1.7 | 4.6 | 63.3% | 61.6% | 39.8% | 49.4% | 42.5% | 53.4% | 40.5% |
| 21 | 2019 | 50/53 | 7.0 | 1.9 | 60.2% | 73.1% | 47.9% | 56.3% | 51.0% | 63.1% | 44.4% | 2012 | 18/20 | 1.8 | 5.3 | 59.7% | 62.2% | 41.6% | 43.4% | 47.6% | 54.1% | 43.1% |
| 22 | 2020 | 18/19 | 7.8 | 2.5 | 59.0% | 76.0% | 53.0% | 64.2% | 43.2% | 66.5% | 42.5% | 2013 | 4/5 | 0.5 | 7.3 | 58.3% | 63.2% | 38.3% | 61.1% | 54.1% | 52.8% | 44.6% |
| 23 | 2021 | 21/28 | 6.5 | 2.8 | 53.5% | 76.2% | 52.2% | 59.4% | 52.6% | 64.9% | 43.6% | — | —/— | — | — | — | — | — | — | — | — | — |
| 24 | 2022 | 22/26 | 5.7 | 2.5 | 51.4% | 76.9% | 47.4% | 61.9% | 44.1% | 62.7% | 41.4% | 2015 | 2/3 | 2.0 | 3.0 | 62.9% | 55.7% | 48.8% | 62.9% | 52.6% | 53.0% | 47.3% |
| 25 | — | —/— | — | — | — | — | — | — | — | — | — | 2016 | 7/7 | 1.6 | 7.1 | 57.2% | 62.9% | 41.9% | 56.2% | 48.6% | 54.3% | 47.2% |
| 26 | 2024 | 36/38 | 6.5 | 2.7 | 54.0% | 75.1% | 51.1% | 56.3% | 50.1% | 64.0% | 40.4% | 2017 | 11/11 | 2.0 | 7.5 | 57.6% | 55.9% | 34.9% | 51.1% | 38.8% | 46.9% | 39.9% |
| 27 | 2025 | 34/46 | 6.6 | 2.9 | 56.9% | 74.7% | 49.3% | 52.5% | 53.6% | 63.5% | 45.2% | 2018 | 2/2 | 1.0 | 5.5 | 63.9% | 60.4% | 38.2% | 56.7% | 60.0% | 52.2% | 50.9% |
| 28 | 2026 | 37/38 | 5.9 | 2.5 | 58.2% | 72.9% | 49.6% | 52.0% | 47.3% | 63.2% | 42.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 350/388 | 5.8 | 2.4 | 56.9% | 72.6% | 48.9% | 54.7% | 50.3% | 62.3% | 43.1% | — | 84/91 | 1.6 | 6.0 | 60.0% | 59.9% | 40.8% | 52.1% | 47.1% | 52.3% | 44.0% |
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 | Kai-Chen Chang | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 2009 | 1558 | 119.4 | -1.06 | +1.66 | 1.024 | 50.6% | +11 | — | — | 50.0% | +0.08 | 2–2 (50%) | 2–2 (50%) | 102.0 | +0.20 |
| 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 | 2010 | 1565 | 115.7 | -2.81 | +0.01 | 0.923 | 48.1% | +27 | -48 | +36 | 41.1% | -0.68 | 3–7 (30%) | 1–0 | — | -0.25 |
| 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 | 2011 | 1489 | 107.6 | -1.48 | -2.00 | 0.870 | 47.1% | +59 | — | — | 27.3% | -1.55 | 0–4 (0%) | 1–0 | — | +0.22 |
| 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 | 2012 | 1579 | 117.3 | -2.25 | -0.69 | 0.939 | 48.7% | +62 | — | — | 44.2% | -0.47 | 2–3 (40%) | 4–2 (67%) | 100.8 | -0.04 |
| 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 | 2013 | 1532 | 98.7 | -1.81 | -0.42 | 0.946 | 49.0% | +42 | — | — | 25.0% | -1.17 | 1–1 | 0–2 | — | +0.21 |
| 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 | 2015 | 1529 | 107.9 | -0.55 | -0.03 | 1.007 | 50.3% | +36 | — | — | 33.3% | -0.33 | — | — | — | -0.01 |
| 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2016 | 1603 | 113.2 | -1.35 | +0.69 | 1.031 | 50.7% | +29 | — | — | 41.2% | +0.18 | 2–1 (67%) | — | — | +0.28 |
| 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 | 2017 | 1537 | 106.9 | -5.20 | -1.20 | 0.751 | 43.4% | +36 | — | — | 17.4% | -2.39 | 1–0 | 1–1 | — | -0.21 |
| 27 | 2025 | 1966 | 153.3 | +4.79 | +1.97 | 1.240 | 54.1% | +59 | -128 | -253 | 65.4% | +1.12 | 11–9 (55%) | 10–6 (63%) | 101.6 | +0.92 | 2018 | 1536 | 102.0 | -0.12 | -0.26 | 1.065 | 51.5% | — | — | — | 50.0% | +0.50 | — | 0–1 | — | +0.27 |
| 28 | 2026 | 2053 | 158.1 | +5.15 | +1.24 | 1.160 | 53.0% | +1 | -104 | -111 | 66.7% | +1.12 | 8–2 (80%) | 7–3 (70%) | 109.0 | -0.80 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 2179 | 157.0 | +4.72 | +0.85 | 1.143 | 52.6% | +35 | -157 | -155 | 62.7% | +0.95 | 70–37 (65%) | 48–45 (52%) | 107.0 | -1.65 | — | 1646 | 117.6 | -2.39 | -0.31 | 0.921 | 48.2% | +38 | -48 | +36 | 37.7% | -0.76 | 11–18 (38%) | 9–8 (53%) | 98.4 | +0.74 |
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 |
|---|---|---|---|---|---|
| Shuai Zhang | 2 | 1 | 3 | Jul 27, 2017 | H2H |
| Shuai Peng | 0 | 3 | 3 | Mar 2, 2017 | H2H |
| Iveta Benesova | 1 | 2 | 3 | Jul 30, 2012 | H2H |
| Tamarine Tanasugarn | 1 | 2 | 3 | Feb 10, 2012 | H2H |
| Qiang Wang | 0 | 2 | 2 | Oct 12, 2017 | H2H |