H2H data updated: 2026-09-02 00:00 UTC

Soonwoo Kwon vs Thai-Son Kwiatkowski H2H: 2-0

Soonwoo Kwon holds a 2–0 lead over Thai-Son Kwiatkowski in their ATP head-to-head. Across 2 main-draw meetings, Soonwoo Kwon leads 2–0 on hard courts. Most recently, Soonwoo Kwon won the 2021 Singapore round of 32 4-6 6-3 6-4.

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Soonwoo Kwon
South Korea Age 28 Right-Handed 180 cm / 5'11"
H2H
2 – 0
2 main draw meetings
Thai-Son Kwiatkowski
USA Age 31 Right-Handed 188 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Soonwoo Kwon #81 4-6 6-3 6-4 Thai-Son Kwiatkowski #219 Match data Feb 25, 2021* R32 Singapore ATP 250 Hard
Soonwoo Kwon #73 3-6 7-6(4) 6-1 6-2 Thai-Son Kwiatkowski #187 Match data Sep 2, 2020* R128 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
Soonwoo Kwon #150 #52 1,120 1,847 56 65 46.3% 0 0 0 0 2 2
Thai-Son Kwiatkowski #1,378 #181 314 1,529 0 7 0.0% 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 Soonwoo Kwon Thai-Son Kwiatkowski
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 2018 0–1 0.0% #235 1,445 0 0 — — — — — — —
21 2019 5–7 41.7% #88 1,695 0 0 — — — — — — —
22 2020 8–7 53.3% #95 1,698 0 0 2017 0–2 0.0% #520 1,477 0 0
23 2021 17–15 53.1% #53 1,756 0 1 2018 0–1 0.0% #296 1,503 0 0
24 2022 17–22 43.6% #83 1,735 0 1 2019 0–1 0.0% #243 1,511 0 0
25 2023 6–5 54.5% #196 1,779 0 2 2020 0–1 0.0% #212 1,469 0 0
26 2024 2–6 25.0% #348 1,694 0 2 2021 0–1 0.0% #221 1,455 0 0
28 2026 1–2 33.3% #150 1,688 0 2 2023 0–1 0.0% #322 1,450 0 0

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 Soonwoo Kwon Thai-Son Kwiatkowski
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 2018 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
21 2019 5 6 11 45.5% — — — — 0 1 1 0.0% — — — — — — — — — — — — —
22 2020 8 6 14 57.1% 0 1 1 0.0% — — — — 2017 0 1 1 0.0% — — — — 0 1 1 0.0%
23 2021 9 9 18 50.0% 5 4 9 55.6% 3 2 5 60.0% 2018 0 1 1 0.0% — — — — — — — —
24 2022 14 15 29 48.3% 3 5 8 37.5% 0 2 2 0.0% 2019 0 1 1 0.0% — — — — — — — —
25 2023 6 5 11 54.5% — — — — — — — — 2020 0 1 1 0.0% — — — — — — — —
26 2024 1 3 4 25.0% 1 2 3 33.3% 0 1 1 0.0% 2021 0 1 1 0.0% — — — — — — — —
28 2026 0 1 1 0.0% — — — — 1 1 2 50.0% 2023 0 1 1 0.0% — — — — — — — —
Career — 43 46 89 48.3% 9 12 21 42.9% 4 7 11 36.4% — 0 6 6 0.0% — — — — 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 120/121 of Soonwoo Kwon's and 7/7 of Thai-Son Kwiatkowski'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 Soonwoo Kwon Thai-Son Kwiatkowski
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 2018 1/1 9.0 8.0 40.8% 58.6% 47.6% 25.0% 33.3% 52.1% 25.7% — —/— — — — — — — — — —
21 2019 12/12 3.2 3.3 63.6% 68.6% 52.0% 70.5% 30.5% 62.3% 36.8% — —/— — — — — — — — — —
22 2020 15/15 5.1 2.7 61.5% 70.9% 54.0% 60.0% 41.9% 64.2% 36.5% 2017 2/2 5.0 7.0 60.7% 62.6% 45.5% 42.5% 59.7% 55.6% 34.9%
23 2021 31/32 5.2 3.7 60.3% 69.8% 51.3% 52.4% 39.6% 62.4% 36.9% 2018 1/1 12.0 1.0 72.6% 68.9% 41.2% 60.0% 0.0% 61.3% 19.0%
24 2022 39/39 4.8 3.1 59.7% 70.0% 50.1% 58.9% 40.9% 61.8% 36.3% 2019 1/1 9.0 7.0 58.4% 73.3% 40.6% 40.0% 33.3% 59.7% 33.8%
25 2023 11/11 7.9 3.0 57.7% 73.5% 50.3% 65.5% 33.6% 63.7% 37.4% 2020 1/1 11.0 4.0 57.9% 64.3% 49.0% 25.0% 28.6% 57.9% 29.2%
26 2024 8/8 4.3 4.5 60.5% 66.3% 51.5% 59.6% 29.2% 60.1% 32.4% 2021 1/1 8.0 3.0 57.4% 66.7% 45.0% 42.9% 60.0% 57.4% 37.2%
28 2026 3/3 6.0 5.0 48.3% 73.3% 51.0% 62.0% 53.3% 62.0% 37.0% 2023 1/1 1.0 4.0 51.8% 63.6% 51.2% 28.6% 33.3% 57.6% 30.9%
Career — 120/121 5.1 3.4 59.9% 70.0% 51.2% 58.9% 38.4% 62.3% 36.3% — 7/7 7.3 4.7 59.9% 66.0% 45.4% 40.2% 39.2% 57.9% 31.4%

Advanced Statistics Comparison by Age

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 Soonwoo Kwon Thai-Son Kwiatkowski
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 2016 1493 102.6 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
19 2017 1464 100.5 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
20 2018 1445 101.3 -1.75 -0.72 0.537 39.0% — — — 0.0% -3.67 — — — -0.04 — — — — — — — — — — — — — — — —
21 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 2016 1488 100.1 — — — — — — — — — — — — —
22 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 2017 1478 106.9 -2.01 0.00 0.786 45.3% — — — 28.6% -1.14 0–1 0–1 — -0.10
23 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 2018 1503 106.9 -2.53 -3.20 0.490 40.8% — — — 0.0% -2.50 — — — +0.10
24 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 2019 1512 112.6 -5.09 +4.02 0.840 47.3% — — — 0.0% -2.00 — — — -0.21
25 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 2020 1470 101.6 -0.62 -0.15 0.694 44.5% — — — 25.0% -1.75 — 0–1 — 0.00
26 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 2021 1456 107.9 -0.38 -0.59 0.875 47.3% — — — 33.3% -1.00 0–1 — — +0.06
27 — — — — — — — — — — — — — — — — 2022 1422 95.8 — — — — — — — — — — — — —
28 2026 1689 112.0 +1.00 +1.37 0.974 49.3% — — — 44.4% -0.56 0–1 1–1 — -0.01 2023 1450 111.9 -0.73 -3.36 0.729 45.8% — — — 33.3% -1.33 0–1 — — +0.10
29 — — — — — — — — — — — — — — — — 2024 1421 98.7 — — — — — — — — — — — — —
30 — — — — — — — — — — — — — — — — 2025 1395 96.8 — — — — — — — — — — — — —
31 — — — — — — — — — — — — — — — — 2026 1386 95.8 — — — — — — — — — — — — —
Career — 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 — 1530 109.5 -1.91 -0.47 0.746 45.2% — — — 23.8% -1.47 0–3 (0%) 0–2 — -0.71

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.