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

Jason Jung vs Tatsuma Ito

Compare the head-to-head record, career totals, season-by-season performance, and match log for Jason Jung vs Tatsuma Ito.

Chinese Taipei Age 37 Right-Handed 178 cm / 5'10"
H2H
0 0
0 main draw meetings
JPN Age 38 Right-Handed 180 cm / 5'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jason Jung #160 6-2 6-1 Tatsuma Ito #227 Match data Jun 29, 2021* Q2 Q Wimbledon Grand Slam Grass

1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. 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
Tatsuma Ito #1,822 #60 725 1,726 28 57 32.9% 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 Tatsuma Ito
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
20 2008 0–1 0.0% #313 1,460 0 0
21 2009 0–2 0.0% #210 1,483 0 0
22 2010 0–1 0.0% #183 1,491 0 0
23 2011 2–4 33.3% #122 1,513 0 0
24 2012 9–13 40.9% #79 1,634 0 0
25 2013 2–9 18.2% #155 1,617 0 0
26 2014 3–5 37.5% #93 1,660 0 0
27 2015 8–11 42.1% #119 1,677 0 0
28 2017 0–2 0.0% #239 1,465 0 0 2016 3–4 42.9% #171 1,671 0 0
29 2018 2–3 40.0% #121 1,531 0 0 2017 0–2 0.0% #153 1,625 0 0
30 2019 2–6 25.0% #127 1,559 0 0 2018 0–1 0.0% #148 1,590 0 0
31 2020 3–6 33.3% #132 1,600 0 0 2019 0–3 0.0% #147 1,586 0 0
32 2021 2–3 40.0% #178 1,537 0 0 2020 1–1 50.0% #186 1,583 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 Tatsuma Ito
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 2008 0 1 1 0.0%
21 2009 0 1 1 0.0% 0 1 1 0.0%
22 2010 0 1 1 0.0%
23 2011 2 4 6 33.3%
24 2012 5 7 12 41.7% 1 2 3 33.3% 3 4 7 42.9%
25 2013 2 7 9 22.2% 0 1 1 0.0% 0 1 1 0.0%
26 2014 2 3 5 40.0% 1 2 3 33.3%
27 2015 5 8 13 38.5% 0 1 1 0.0% 3 2 5 60.0%
28 2017 0 1 1 0.0% 0 1 1 0.0% 2016 2 3 5 40.0% 1 1 2 50.0%
29 2018 0 1 1 0.0% 2 2 4 50.0% 2017 0 1 1 0.0% 0 1 1 0.0%
30 2019 2 5 7 28.6% 0 1 1 0.0% 2018 0 1 1 0.0%
31 2020 3 5 8 37.5% 0 1 1 0.0% 2019 0 3 3 0.0%
32 2021 0 2 2 0.0% 2 1 3 66.7% 2020 1 1 2 50.0%
34 2023 1 2 3 33.3%
Career 6 16 22 27.3% 0 1 1 0.0% 4 5 9 44.4% 19 41 60 31.7% 1 4 5 20.0% 8 12 20 40.0%

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 32/32 of Jason Jung's and 84/85 of Tatsuma Ito'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 Jason Jung Tatsuma Ito
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 —/— 2008 1/1 2.0 4.0 61.5% 43.8% 45.0% 28.6% 20.0% 44.2% 37.3%
21 —/— 2009 2/2 3.5 3.0 55.7% 63.5% 30.4% 29.8% 75.0% 48.9% 33.3%
22 —/— 2010 1/1 3.0 2.0 49.2% 63.3% 48.4% 57.1% 33.3% 55.7% 25.5%
23 —/— 2011 6/6 3.5 3.7 55.2% 63.9% 48.4% 54.0% 24.4% 57.2% 28.9%
24 —/— 2012 21/22 4.0 3.5 56.3% 66.6% 50.9% 54.8% 40.0% 59.6% 36.5%
25 —/— 2013 11/11 3.7 3.6 56.7% 66.3% 46.9% 46.9% 38.1% 57.6% 32.9%
26 —/— 2014 8/8 5.9 3.6 61.4% 67.3% 49.6% 53.3% 41.7% 60.5% 34.2%
27 —/— 2015 19/19 4.1 2.4 60.5% 71.9% 46.6% 55.8% 30.3% 62.1% 35.4%
28 2017 2/2 4.0 3.0 61.8% 57.4% 49.1% 44.4% 75.0% 54.8% 31.3% 2016 7/7 4.1 3.3 61.9% 66.4% 54.6% 43.5% 71.3% 62.5% 35.8%
29 2018 5/5 4.2 4.0 68.0% 62.8% 51.2% 65.1% 42.6% 59.2% 33.4% 2017 2/2 1.5 3.5 60.9% 65.2% 51.0% 50.0% 16.7% 59.8% 25.5%
30 2019 8/8 3.3 2.3 64.9% 66.4% 55.2% 51.9% 32.2% 62.0% 32.2% 2018 1/1 4.0 6.0 53.3% 67.2% 51.8% 76.5% 38.5% 60.0% 42.6%
31 2020 9/9 3.2 1.9 65.0% 67.4% 47.0% 44.1% 40.1% 60.3% 35.3% 2019 3/3 4.3 4.3 55.4% 69.1% 44.1% 40.6% 26.3% 57.8% 36.5%
32 2021 5/5 3.2 3.2 65.2% 70.5% 44.0% 65.8% 30.5% 61.6% 36.2% 2020 2/2 7.5 2.5 70.2% 68.1% 43.8% 55.6% 36.4% 60.4% 29.7%
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% 84/85 4.1 3.3 58.5% 67.3% 48.4% 51.6% 38.6% 59.5% 34.4%

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 Jason Jung Tatsuma Ito
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 2007 1485 99.3
20 2008 1460 95.0 -3.59 -0.51 0.669 40.5% 0.0% -4.00 -0.10
21 2009 1483 102.7 -1.10 +0.91 0.651 40.8% 0.0% -3.50 +0.23
22 2010 1492 106.5 -1.95 +7.36 0.576 42.0% 0.0% -2.50 -0.10
23 2011 1513 111.0 -3.38 -2.91 0.676 43.8% +20 33.3% -1.53 1–1 2–0 0.00
24 2013 1475 94.4 2012 1635 124.2 -2.45 -0.38 0.904 48.0% -2 -103 -65 39.7% -0.91 4–3 (57%) 5–3 (63%) +0.56
25 2014 1504 109.1 2013 1618 116.8 -4.05 -1.85 0.775 45.3% +28 28.6% -1.75 2–2 (50%) 2–1 (67%) +0.28
26 2015 1494 97.5 2014 1660 123.9 -2.82 -0.02 0.867 47.6% +12 -29 37.5% -0.25 1–3 (25%) +0.33
27 2015 1677 125.3 -2.21 -0.52 0.934 48.3% -19 +54 40.4% -0.68 4–3 (57%) 4–4 (50%) +1.59
28 2017 1466 99.2 -1.95 -2.05 0.694 43.9% 0.0% -3.00 -0.09 2016 1671 118.1 -0.69 +0.33 0.956 49.1% +7 44.4% -0.45 1–1 3–1 (75%) +0.05
29 2018 1532 109.6 -1.26 -2.42 0.819 47.0% +87 38.5% -0.85 1–1 0–1 +0.05 2017 1626 112.5 -0.78 -3.10 0.634 44.1% 20.0% -1.40 0–1 -0.06
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 2018 1591 100.3 -1.04 -2.54 1.065 51.8% 33.3% +0.33 0–1 0–1 -0.03
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 2019 1586 115.3 -1.04 -1.28 0.863 46.6% +47 12.5% -1.88 0–1 0–1 +0.29
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 2020 1584 107.5 +1.82 +0.48 0.751 46.0% 50.0% -0.50 +0.01
33 2022 1529 100.5 2021 1510 90.6
34 2023 1528 110.8 -3.54 -0.93 0.665 41.8% -1 28.6% -2.28 1–0 1–0 +0.07 2022 1486 89.9
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 1727 119.8 -2.33 -0.67 0.851 47.0% +6 -103 -18 35.4% -1.04 12–13 (48%) 17–14 (55%) 105.6 +3.59

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.