H2H data updated: 2026-09-04 00:00 UTC

Jason Jung vs Bradley Klahn H2H: 0-1

Bradley Klahn holds a 1–0 lead over Jason Jung in their ATP head-to-head. Across 1 main-draw meeting, Bradley Klahn leads 1–0 on hard courts. Most recently, Bradley Klahn won the 2019 Chengdu Open first round 4-6 6-3 7-6(2).

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Jason Jung
Chinese Taipei Age 37 Right-Handed 178 cm / 5'10"
H2H
0 – 1
1 main draw meetings
Bradley Klahn
USA Age 36 Left-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Bradley Klahn #97 4-6 6-3 7-6(2) Jason Jung #132 Match data Sep 26, 2019* R32 Chengdu 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.

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
Jason Jung #1,071 #114 500 1,668 10 22 31.2% 0 0 0 0 0 0
Bradley Klahn #1,096 #63 731 1,734 13 43 23.2% 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 Jason Jung Bradley Klahn
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 — — — — — — — 2010 0–1 0.0% — 1,499 0 0
20 — — — — — — — 2011 0–1 0.0% — 1,525 0 0
21 — — — — — — — 2012 1–2 33.3% #248 1,638 0 0
22 — — — — — — — 2013 1–3 25.0% #97 1,602 0 0
23 — — — — — — — 2014 2–11 15.4% #148 1,549 0 0
27 — — — — — — — 2018 5–8 38.5% #76 1,708 0 0
28 2017 0–2 0.0% #239 1,465 0 0 2019 4–14 22.2% #135 1,645 0 0
29 2018 2–3 40.0% #121 1,531 0 0 2020 0–1 0.0% #149 1,570 0 0
30 2019 2–6 25.0% #127 1,559 0 0 — — — — — — —
31 2020 3–6 33.3% #132 1,600 0 0 2022 0–1 0.0% #873 1,485 0 0
32 2021 2–3 40.0% #178 1,537 0 0 2023 0–1 0.0% #877 1,479 0 0
34 2023 1–2 33.3% #244 1,528 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 Jason Jung Bradley Klahn
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 %
19 — — — — — — — — — — — — — 2010 0 1 1 0.0% — — — — — — — —
20 — — — — — — — — — — — — — 2011 0 1 1 0.0% — — — — — — — —
21 — — — — — — — — — — — — — 2012 1 2 3 33.3% — — — — — — — —
22 — — — — — — — — — — — — — 2013 1 2 3 33.3% 0 1 1 0.0% — — — —
23 — — — — — — — — — — — — — 2014 2 7 9 22.2% 0 1 1 0.0% 0 3 3 0.0%
27 — — — — — — — — — — — — — 2018 4 7 11 36.4% — — — — 1 1 2 50.0%
28 2017 0 1 1 0.0% — — — — 0 1 1 0.0% 2019 3 9 12 25.0% 0 2 2 0.0% 1 3 4 25.0%
29 2018 0 1 1 0.0% — — — — 2 2 4 50.0% 2020 0 1 1 0.0% — — — — — — — —
30 2019 2 5 7 28.6% — — — — 0 1 1 0.0% — — — — — — — — — — — — —
31 2020 3 5 8 37.5% 0 1 1 0.0% — — — — 2022 0 1 1 0.0% — — — — — — — —
32 2021 0 2 2 0.0% — — — — 2 1 3 66.7% 2023 0 1 1 0.0% — — — — — — — —
34 2023 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
Career — 6 16 22 27.3% 0 1 1 0.0% 4 5 9 44.4% — 11 32 43 25.6% 0 4 4 0.0% 2 7 9 22.2%

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. 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 Jason Jung Bradley Klahn
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%
19 — —/— — — — — — — — — — 2010 1/1 6.0 7.0 69.5% 69.2% 40.0% 56.3% 27.3% 60.3% 31.3%
20 — —/— — — — — — — — — — 2011 1/1 1.0 4.0 58.0% 62.1% 42.9% 40.0% 0.0% 54.0% 22.4%
21 — —/— — — — — — — — — — 2012 3/3 7.3 4.3 64.4% 62.3% 41.6% 60.4% 44.4% 55.0% 37.4%
22 — —/— — — — — — — — — — 2013 4/4 8.0 2.3 66.9% 73.3% 51.5% 25.0% 33.5% 65.9% 33.7%
23 — —/— — — — — — — — — — 2014 13/13 6.7 5.5 58.6% 66.8% 46.4% 53.4% 33.7% 58.4% 32.0%
27 — —/— — — — — — — — — — 2018 13/13 9.2 4.5 59.8% 75.5% 53.9% 50.6% 38.6% 66.9% 28.2%
28 2017 2/2 4.0 3.0 61.8% 57.4% 49.1% 44.4% 75.0% 54.8% 31.3% 2019 18/18 8.8 4.6 59.5% 72.2% 52.6% 60.3% 34.4% 64.4% 29.4%
29 2018 5/5 4.2 4.0 68.0% 62.8% 51.2% 65.1% 42.6% 59.2% 33.4% 2020 1/1 10.0 5.0 62.9% 63.0% 44.2% 64.7% 50.0% 56.0% 26.1%
30 2019 8/8 3.3 2.3 64.9% 66.4% 55.2% 51.9% 32.2% 62.0% 32.2% — —/— — — — — — — — — —
31 2020 9/9 3.2 1.9 65.0% 67.4% 47.0% 44.1% 40.1% 60.3% 35.3% 2022 1/1 6.0 3.0 52.2% 58.3% 54.5% 50.0% — 56.5% 20.0%
32 2021 5/5 3.2 3.2 65.2% 70.5% 44.0% 65.8% 30.5% 61.6% 36.2% 2023 1/1 4.0 5.0 68.9% 66.7% 31.6% 66.7% 0.0% 55.7% 23.5%
34 2023 3/3 1.3 2.3 59.3% 57.1% 46.4% 45.2% 18.2% 52.7% 31.5% — —/— — — — — — — — — —
Career — 32/32 3.3 2.6 64.8% 65.3% 49.3% 52.8% 37.1% 59.7% 33.7% — 56/56 7.9 4.6 60.4% 70.5% 49.9% 53.5% 34.0% 62.5% 30.1%

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 Jason Jung Bradley Klahn
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
19 — — — — — — — — — — — — — — — — 2010 1499 108.4 -1.52 +3.65 0.787 46.9% — — — 25.0% -1.25 — — — -0.11
20 — — — — — — — — — — — — — — — — 2011 1525 112.8 +0.69 +0.59 0.488 38.4% — — — 0.0% -3.50 — — — -0.19
21 — — — — — — — — — — — — — — — — 2012 1639 117.2 -2.52 -0.18 0.831 46.8% +35 — — 36.4% -1.18 1–1 — — +0.09
22 — — — — — — — — — — — — — — — — 2013 1603 112.5 -1.91 -0.65 0.991 48.3% +55 — — 33.3% -0.67 — 2–3 (40%) — +0.13
23 — — — — — — — — — — — — — — — — 2014 1550 122.4 -3.31 -2.26 0.770 45.5% +73 — -31 30.0% -1.58 2–4 (33%) 6–2 (75%) — -0.32
24 2013 1475 94.4 — — — — — — — — — — — — — 2015 1548 102.5 — — — — — — — — — — — — —
25 2014 1504 109.1 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
26 2015 1494 97.5 — — — — — — — — — — — — — 2017 1549 103.9 — — — — — — — — — — — — —
27 — — — — — — — — — — — — — — — — 2018 1709 132.3 +1.07 -2.48 0.852 48.3% -22 — — 38.2% -0.56 2–2 (50%) 5–5 (50%) — -0.18
28 2017 1466 99.2 -1.95 -2.05 0.694 43.9% — — — 0.0% -3.00 — — — -0.09 2019 1646 123.8 -0.08 -4.65 0.825 47.6% +21 — -93 28.3% -1.00 1–2 (33%) 4–6 (40%) — 0.00
29 2018 1532 109.6 -1.26 -2.42 0.819 47.0% — — +87 38.5% -0.85 1–1 0–1 — +0.05 2020 1570 96.9 -1.18 -3.05 0.594 43.1% — — — 25.0% -2.50 — — — +0.34
30 2019 1559 117.1 -2.28 -1.30 0.845 47.3% +24 — — 35.0% -0.60 1–3 (25%) 0–3 (0%) — +0.22 — — — — — — — — — — — — — — — —
31 2020 1600 135.9 -1.90 -0.10 0.889 47.4% +31 — — 37.5% -1.00 1–0 1–3 (25%) — +0.21 2022 1485 106.5 -0.77 -0.68 0.460 42.1% — — — 0.0% -3.00 — — — -0.01
32 2021 1538 108.2 -2.40 -0.54 0.941 48.6% — — +68 36.4% -0.73 1–0 1–2 (33%) — +0.76 2023 1480 104.5 +0.15 -2.16 0.532 41.1% — — — 0.0% -3.00 — — — +0.02
33 2022 1529 100.5 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
34 2023 1528 110.8 -3.54 -0.93 0.665 41.8% -1 — — 28.6% -2.28 1–0 1–0 — +0.07 — — — — — — — — — — — — — — — —
Career — 1669 117.0 -2.13 -1.03 0.837 46.8% +23 — +79 33.8% -1.06 5–4 (56%) 3–9 (25%) 99.3 +3.81 — 1734 124.5 -0.86 -2.68 0.801 46.8% +25 — -66 30.6% -1.17 6–9 (40%) 17–16 (52%) 101.2 -0.41

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.