H2H data updated: 2026-09-01 00:00 UTC
Soonwoo Kwon holds a 1–0 lead over Daniel Altmaier in their ATP head-to-head. Across 1 main-draw meeting, Soonwoo Kwon leads 1–0 on hard courts. Most recently, Soonwoo Kwon won the 2022 Winston-Salem Open first round 6-1 6-4.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Soonwoo Kwon | 6-1 6-4 | Daniel Altmaier | Match data | Aug 23, 2022* | R64 | Winston-Salem Open | ATP 250 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daniel Altmaier | #57 | #44 | 1,148 | 1,774 | 80 | 132 | 37.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| Soonwoo Kwon | #150 | #52 | 1,120 | 1,847 | 56 | 65 | 46.3% | 0 | 0 | 0 | 0 | 2 | 2 |
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 | Daniel Altmaier | Soonwoo Kwon | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 18 | 2017 | 2–3 | 40.0% | #275 | 1,540 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 2019 | 0–1 | 0.0% | #279 | 1,530 | 0 | 0 | 2018 | 0–1 | 0.0% | #235 | 1,445 | 0 | 0 |
| 21 | 2020 | 3–3 | 50.0% | #130 | 1,670 | 0 | 0 | 2019 | 5–7 | 41.7% | #88 | 1,695 | 0 | 0 |
| 22 | 2021 | 7–8 | 46.7% | #84 | 1,725 | 0 | 0 | 2020 | 8–7 | 53.3% | #95 | 1,698 | 0 | 0 |
| 23 | 2022 | 5–21 | 19.2% | #94 | 1,564 | 0 | 0 | 2021 | 17–15 | 53.1% | #53 | 1,756 | 0 | 1 |
| 24 | 2023 | 14–22 | 38.9% | #56 | 1,648 | 0 | 0 | 2022 | 17–22 | 43.6% | #83 | 1,735 | 0 | 1 |
| 25 | 2024 | 12–22 | 35.3% | #89 | 1,629 | 0 | 0 | 2023 | 6–5 | 54.5% | #196 | 1,779 | 0 | 2 |
| 26 | 2025 | 22–28 | 44.0% | #46 | 1,758 | 0 | 0 | 2024 | 2–6 | 25.0% | #348 | 1,694 | 0 | 2 |
| 27 | 2026 | 15–24 | 38.5% | #57 | 1,718 | 0 | 0 | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | 2026 | 1–2 | 33.3% | #150 | 1,688 | 0 | 2 |
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 | Daniel Altmaier | Soonwoo Kwon | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 18 | 2017 | — | — | — | — | 0 | 2 | 2 | 0.0% | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2019 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 2018 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 21 | 2020 | 0 | 2 | 2 | 0.0% | 3 | 1 | 4 | 75.0% | — | — | — | — | 2019 | 5 | 6 | 11 | 45.5% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 22 | 2021 | 1 | 1 | 2 | 50.0% | 6 | 6 | 12 | 50.0% | 0 | 1 | 1 | 0.0% | 2020 | 8 | 6 | 14 | 57.1% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 23 | 2022 | 2 | 11 | 13 | 15.4% | 1 | 6 | 7 | 14.3% | 2 | 4 | 6 | 33.3% | 2021 | 9 | 9 | 18 | 50.0% | 5 | 4 | 9 | 55.6% | 3 | 2 | 5 | 60.0% |
| 24 | 2023 | 4 | 12 | 16 | 25.0% | 10 | 8 | 18 | 55.6% | 0 | 2 | 2 | 0.0% | 2022 | 14 | 15 | 29 | 48.3% | 3 | 5 | 8 | 37.5% | 0 | 2 | 2 | 0.0% |
| 25 | 2024 | 7 | 10 | 17 | 41.2% | 4 | 11 | 15 | 26.7% | 1 | 1 | 2 | 50.0% | 2023 | 6 | 5 | 11 | 54.5% | — | — | — | — | — | — | — | — |
| 26 | 2025 | 15 | 18 | 33 | 45.5% | 6 | 7 | 13 | 46.2% | 1 | 3 | 4 | 25.0% | 2024 | 1 | 3 | 4 | 25.0% | 1 | 2 | 3 | 33.3% | 0 | 1 | 1 | 0.0% |
| 27 | 2026 | 3 | 9 | 12 | 25.0% | 8 | 11 | 19 | 42.1% | 4 | 4 | 8 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2026 | 0 | 1 | 1 | 0.0% | — | — | — | — | 1 | 1 | 2 | 50.0% |
| Career | — | 32 | 63 | 95 | 33.7% | 38 | 53 | 91 | 41.8% | 10 | 16 | 26 | 38.5% | — | 43 | 46 | 89 | 48.3% | 9 | 12 | 21 | 42.9% | 4 | 7 | 11 | 36.4% |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 208/213 of Daniel Altmaier's and 120/121 of Soonwoo Kwon'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 | Daniel Altmaier | Soonwoo Kwon | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | |
| 18 | 2017 | 5/5 | 8.0 | 3.0 | 60.9% | 71.1% | 44.6% | 56.4% | 32.9% | 60.5% | 28.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| 20 | 2019 | 1/1 | 2.0 | 3.0 | 59.1% | 46.2% | 33.3% | 0.0% | 50.0% | 40.9% | 31.9% | 2018 | 1/1 | 9.0 | 8.0 | 40.8% | 58.6% | 47.6% | 25.0% | 33.3% | 52.1% | 25.7% |
| 21 | 2020 | 6/6 | 5.7 | 2.8 | 57.7% | 69.1% | 45.9% | 68.5% | 31.2% | 58.7% | 37.5% | 2019 | 12/12 | 3.2 | 3.3 | 63.6% | 68.6% | 52.0% | 70.5% | 30.5% | 62.3% | 36.8% |
| 22 | 2021 | 15/15 | 5.6 | 2.9 | 59.2% | 71.6% | 47.5% | 68.3% | 47.6% | 61.6% | 36.4% | 2020 | 15/15 | 5.1 | 2.7 | 61.5% | 70.9% | 54.0% | 60.0% | 41.9% | 64.2% | 36.5% |
| 23 | 2022 | 26/26 | 6.8 | 2.7 | 61.2% | 69.6% | 46.0% | 59.0% | 37.1% | 60.5% | 32.0% | 2021 | 31/32 | 5.2 | 3.7 | 60.3% | 69.8% | 51.3% | 52.4% | 39.6% | 62.4% | 36.9% |
| 24 | 2023 | 35/36 | 5.9 | 2.3 | 65.7% | 68.6% | 51.6% | 61.3% | 38.7% | 62.8% | 34.7% | 2022 | 39/39 | 4.8 | 3.1 | 59.7% | 70.0% | 50.1% | 58.9% | 40.9% | 61.8% | 36.3% |
| 25 | 2024 | 34/34 | 5.9 | 2.6 | 63.2% | 69.9% | 48.5% | 56.5% | 37.3% | 61.8% | 34.1% | 2023 | 11/11 | 7.9 | 3.0 | 57.7% | 73.5% | 50.3% | 65.5% | 33.6% | 63.7% | 37.4% |
| 26 | 2025 | 47/50 | 7.7 | 2.5 | 59.6% | 71.8% | 46.4% | 55.1% | 36.3% | 61.6% | 33.3% | 2024 | 8/8 | 4.3 | 4.5 | 60.5% | 66.3% | 51.5% | 59.6% | 29.2% | 60.1% | 32.4% |
| 27 | 2026 | 39/40 | 6.2 | 2.8 | 63.6% | 70.3% | 47.1% | 51.4% | 34.9% | 61.7% | 33.8% | — | —/— | — | — | — | — | — | — | — | — | — |
| 28 | — | —/— | — | — | — | — | — | — | — | — | — | 2026 | 3/3 | 6.0 | 5.0 | 48.3% | 73.3% | 51.0% | 62.0% | 53.3% | 62.0% | 37.0% |
| Career | — | 208/213 | 6.5 | 2.6 | 62.1% | 70.2% | 47.7% | 57.3% | 37.4% | 61.5% | 33.8% | — | 120/121 | 5.1 | 3.4 | 59.9% | 70.0% | 51.2% | 58.9% | 38.4% | 62.3% | 36.3% |
Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. 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 | Daniel Altmaier | Soonwoo Kwon | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 2017 | 1541 | 104.5 | -1.83 | -2.08 | 0.731 | 44.9% | — | — | +66 | 33.3% | -1.17 | 2–0 | 2–2 (50%) | — | +0.15 | 2016 | 1493 | 102.6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2017 | 1464 | 100.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2019 | 1530 | 102.6 | -2.67 | -4.21 | 0.540 | 36.3% | — | — | — | 0.0% | -4.00 | — | — | — | 0.00 | 2018 | 1445 | 101.3 | -1.75 | -0.72 | 0.537 | 39.0% | — | — | — | 0.0% | -3.67 | — | — | — | -0.04 |
| 21 | 2020 | 1670 | 121.4 | -2.65 | +1.70 | 0.909 | 48.3% | — | +46 | — | 58.8% | -0.18 | 0–1 | 3–1 (75%) | — | -0.16 | 2019 | 1695 | 131.1 | -1.10 | -0.95 | 0.977 | 49.3% | -16 | — | — | 42.9% | -0.14 | 3–1 (75%) | 1–4 (20%) | — | +0.19 |
| 22 | 2021 | 1726 | 125.4 | -2.00 | -0.47 | 0.947 | 49.7% | — | +75 | — | 45.7% | 0.00 | 3–4 (43%) | 1–5 (17%) | — | -0.06 | 2020 | 1699 | 138.1 | -0.04 | +0.61 | 1.019 | 50.1% | +49 | — | — | 48.9% | -0.04 | 5–3 (63%) | 7–4 (64%) | — | +0.82 |
| 23 | 2022 | 1564 | 125.6 | -1.76 | -3.41 | 0.811 | 46.4% | -64 | +115 | +4 | 26.9% | -1.31 | 3–6 (33%) | 3–8 (27%) | — | -0.18 | 2021 | 1757 | 132.7 | -0.49 | +0.31 | 0.983 | 49.5% | -27 | -121 | -128 | 51.2% | -0.06 | 6–6 (50%) | 8–9 (47%) | — | +0.61 |
| 24 | 2023 | 1648 | 137.5 | -1.07 | -0.53 | 0.932 | 48.9% | -114 | +131 | — | 44.2% | -0.29 | 3–10 (23%) | 6–10 (38%) | — | +0.65 | 2022 | 1735 | 143.6 | -1.25 | -0.25 | 0.951 | 49.3% | +20 | -103 | — | 45.7% | -0.28 | 7–9 (44%) | 8–4 (67%) | — | -1.07 |
| 25 | 2024 | 1630 | 131.3 | -1.48 | -1.33 | 0.893 | 48.3% | -32 | +35 | — | 40.7% | -0.52 | 3–5 (38%) | 12–9 (57%) | — | +0.54 | 2023 | 1779 | 143.2 | +0.13 | +1.37 | 1.032 | 50.1% | +11 | — | — | 48.4% | -0.19 | 4–1 (80%) | 3–2 (60%) | — | -0.84 |
| 26 | 2025 | 1758 | 141.9 | -1.65 | -1.43 | 0.865 | 47.6% | -36 | -1 | -218 | 43.1% | -0.49 | 8–7 (53%) | 10–13 (43%) | — | +0.62 | 2024 | 1694 | 114.7 | -1.35 | -1.37 | 0.812 | 47.0% | +28 | -79 | — | 33.3% | -0.87 | 0–1 | 2–2 (50%) | — | -0.31 |
| 27 | 2026 | 1719 | 131.8 | -2.25 | -1.10 | 0.883 | 48.0% | -64 | +14 | -139 | 38.3% | -0.72 | 7–4 (64%) | 7–10 (41%) | — | -1.78 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2026 | 1689 | 112.0 | +0.97 | +1.42 | 0.974 | 49.3% | — | — | — | 44.4% | -0.56 | 0–1 | 1–1 | — | -0.01 |
| Career | — | 1775 | 137.1 | -1.71 | -1.32 | 0.878 | 47.9% | -57 | +57 | -84 | 40.3% | -0.59 | 29–37 (44%) | 44–58 (43%) | 99.2 | -0.10 | — | 1848 | 141.2 | -0.72 | +0.04 | 0.963 | 49.3% | +10 | -108 | -128 | 46.2% | -0.25 | 25–22 (53%) | 30–26 (54%) | 105.4 | -0.54 |
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 |
|---|---|---|---|---|---|
| Arthur Fils | 3 | 3 | 6 | Feb 7, 2025 | H2H |
| Frances Tiafoe | 0 | 5 | 5 | Jun 20, 2026 | H2H |
| Felix Auger-Aliassime | 2 | 3 | 5 | May 26, 2026 | H2H |
| Alexander Zverev | 1 | 4 | 5 | May 9, 2026 | H2H |
| Miomir Kecmanovic | 1 | 3 | 4 | Mar 4, 2026 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Andrey Rublev | 0 | 4 | 4 | Sep 1, 2022 | H2H |
| Ilya Ivashka | 2 | 2 | 4 | Feb 23, 2022 | H2H |
| Holger Rune | 2 | 1 | 3 | Jul 3, 2024 | H2H |
| Alex de Minaur | 1 | 2 | 3 | Mar 23, 2024 | H2H |
| Christopher Eubanks | 1 | 2 | 3 | Aug 30, 2023 | H2H |