H2H data updated: 2026-09-05 00:00 UTC

Lukas Klein vs Denis Istomin

Compare the head-to-head record, career totals, season-by-season performance, and match log for Lukas Klein vs Denis Istomin.

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Lukas Klein
Slovakia Age 28 Right-Handed 193 cm / 6'4"
H2H
0 – 0
0 main draw meetings
Denis Istomin
UZB Age 39 Right-Handed 188 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Lukas Klein #254 6-3 2-6 6-4 Denis Istomin #187 Match data Jun 20, 2021* Q2 Q Mallorca Championships ATP 250 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
Lukas Klein #288 #109 544 1,736 10 16 38.5% 0 0 0 0 0 0
Denis Istomin #1,509 #33 1,217 1,914 196 249 44.0% 0 0 0 0 2 2

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 Lukas Klein Denis Istomin
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 — — — — — — — 2006 0–2 0.0% #200 1,474 0 0
21 — — — — — — — 2008 2–2 50.0% #105 1,559 0 0
22 — — — — — — — 2009 13–17 43.3% #102 1,635 0 0
23 2021 2–4 33.3% #258 1,560 0 0 2010 29–29 50.0% #40 1,767 0 0
24 2022 0–1 0.0% #136 1,559 0 0 2011 10–21 32.3% #73 1,665 0 0
25 2023 0–1 0.0% #170 1,559 0 0 2012 28–30 48.3% #43 1,751 0 0
26 2024 8–9 47.1% #136 1,692 0 0 2013 30–29 50.8% #45 1,811 0 0
27 2025 0–1 0.0% #142 1,621 0 0 2014 27–24 52.9% #49 1,860 0 0
28 — — — — — — — 2015 20–23 46.5% #61 1,789 0 1
29 — — — — — — — 2016 6–20 23.1% #121 1,707 0 1
30 — — — — — — — 2017 15–18 45.5% #63 1,723 0 2
31 — — — — — — — 2018 12–18 40.0% #92 1,678 0 2
32 — — — — — — — 2019 3–11 21.4% #177 1,575 0 2
33 — — — — — — — 2020 0–1 0.0% #184 1,552 0 2
34 — — — — — — — 2021 0–3 0.0% #254 1,537 0 2
35 — — — — — — — 2022 1–1 50.0% #467 1,570 0 2

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 Lukas Klein Denis Istomin
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
W L M Win % W L M Win % 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 — — — — — — — — — — — — — — — — — 2006 0 1 1 0.0% — — — — — — — — 0 1 1 0.0%
21 — — — — — — — — — — — — — — — — — 2008 2 2 4 50.0% — — — — — — — — — — — —
22 — — — — — — — — — — — — — — — — — 2009 9 12 21 42.9% 1 2 3 33.3% 3 3 6 50.0% — — — —
23 2021 0 1 1 0.0% 1 2 3 33.3% 1 1 2 50.0% — — — — 2010 17 19 36 47.2% 5 7 12 41.7% 7 3 10 70.0% — — — —
24 2022 — — — — — — — — 0 1 1 0.0% — — — — 2011 7 10 17 41.2% 2 8 10 20.0% 1 3 4 25.0% — — — —
25 2023 0 1 1 0.0% — — — — — — — — — — — — 2012 17 17 34 50.0% 3 8 11 27.3% 8 5 13 61.5% — — — —
26 2024 6 6 12 50.0% 2 3 5 40.0% — — — — — — — — 2013 25 19 44 56.8% 4 7 11 36.4% 1 3 4 25.0% — — — —
27 2025 0 1 1 0.0% — — — — — — — — — — — — 2014 13 17 30 43.3% 8 4 12 66.7% 6 3 9 66.7% — — — —
28 — — — — — — — — — — — — — — — — — 2015 9 15 24 37.5% 5 6 11 45.5% 6 2 8 75.0% — — — —
29 — — — — — — — — — — — — — — — — — 2016 1 10 11 9.1% 3 7 10 30.0% 2 3 5 40.0% — — — —
30 — — — — — — — — — — — — — — — — — 2017 11 8 19 57.9% 4 7 11 36.4% 0 3 3 0.0% — — — —
31 — — — — — — — — — — — — — — — — — 2018 5 8 13 38.5% 4 7 11 36.4% 3 3 6 50.0% — — — —
32 — — — — — — — — — — — — — — — — — 2019 2 6 8 25.0% 1 3 4 25.0% 0 2 2 0.0% — — — —
33 — — — — — — — — — — — — — — — — — 2020 0 1 1 0.0% — — — — — — — — — — — —
34 — — — — — — — — — — — — — — — — — 2021 0 2 2 0.0% 0 1 1 0.0% — — — — — — — —
35 — — — — — — — — — — — — — — — — — 2022 1 1 2 50.0% — — — — — — — — — — — —
Career — 6 9 15 40.0% 3 5 8 37.5% 1 2 3 33.3% — — — — — 119 148 267 44.6% 40 67 107 37.4% 37 33 70 52.9% 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 25/26 of Lukas Klein's and 437/445 of Denis Istomin'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 Lukas Klein Denis Istomin
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 — —/— — — — — — — — — — 2006 2/2 7.5 2.0 61.5% 66.3% 47.4% 60.2% 22.2% 59.1% 27.3%
21 — —/— — — — — — — — — — 2008 4/4 4.5 2.0 62.2% 68.4% 49.7% 65.1% 38.0% 61.3% 35.4%
22 — —/— — — — — — — — — — 2009 29/30 6.6 2.7 66.1% 69.8% 48.8% 54.8% 41.5% 62.4% 34.1%
23 2021 5/6 2.8 3.6 63.4% 68.5% 46.9% 57.7% 38.8% 61.1% 36.3% 2010 58/58 6.7 1.5 65.3% 70.2% 53.9% 54.2% 41.5% 64.5% 36.2%
24 2022 1/1 12.0 6.0 68.1% 68.4% 63.0% 45.5% 28.6% 66.7% 36.0% 2011 31/31 5.5 2.2 64.3% 64.3% 49.6% 56.0% 36.7% 59.3% 34.6%
25 2023 1/1 4.0 0.0 59.4% 57.9% 57.7% 57.1% 0.0% 57.8% 29.3% 2012 54/58 7.1 1.7 63.9% 70.8% 52.2% 58.0% 39.1% 64.1% 35.8%
26 2024 17/17 7.8 3.3 64.6% 74.3% 54.9% 57.0% 33.5% 67.3% 35.1% 2013 59/59 6.3 2.0 63.2% 72.0% 51.6% 64.5% 39.1% 64.4% 35.1%
27 2025 1/1 11.0 4.0 59.0% 70.0% 55.0% 50.0% 40.0% 64.0% 39.0% 2014 50/51 7.0 1.6 67.9% 72.2% 50.5% 58.6% 39.9% 65.0% 34.8%
28 — —/— — — — — — — — — — 2015 43/43 5.7 1.3 63.5% 72.5% 51.8% 58.3% 38.9% 64.8% 36.5%
29 — —/— — — — — — — — — — 2016 25/26 6.8 2.1 63.5% 69.9% 49.2% 52.9% 44.8% 62.3% 33.7%
30 — —/— — — — — — — — — — 2017 33/33 8.4 1.7 65.4% 72.3% 50.1% 59.7% 44.3% 64.7% 34.2%
31 — —/— — — — — — — — — — 2018 30/30 5.7 1.5 68.7% 71.0% 51.0% 56.5% 34.9% 64.5% 34.3%
32 — —/— — — — — — — — — — 2019 14/14 5.5 2.0 65.7% 72.4% 49.2% 56.9% 39.4% 64.5% 30.6%
33 — —/— — — — — — — — — — 2020 1/1 2.0 2.0 64.0% 65.6% 27.8% 60.0% 0.0% 52.0% 28.3%
34 — —/— — — — — — — — — — 2021 2/3 2.0 2.5 72.1% 64.6% 44.2% 50.8% — 59.2% 19.8%
35 — —/— — — — — — — — — — 2022 2/2 3.5 1.5 68.0% 69.9% 41.1% 72.2% 21.4% 60.5% 33.4%
Career — 25/26 6.9 3.4 64.1% 72.1% 53.8% 56.4% 33.3% 65.5% 35.3% — 437/445 6.5 1.8 65.1% 70.7% 51.0% 57.9% 39.5% 63.8% 34.9%

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 Lukas Klein Denis Istomin
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 — — — — — — — — — — — — — — — — 2006 1474 112.2 +1.83 +2.43 0.669 43.4% — — — 16.7% -2.34 0–1 1–1 — -0.22
20 — — — — — — — — — — — — — — — — 2007 1486 103.4 — — — — — — — — — — — — —
21 — — — — — — — — — — — — — — — — 2008 1559 115.8 -0.37 +0.78 0.914 48.9% +45 — — 50.0% -0.08 — 2–2 (50%) — +0.02
22 — — — — — — — — — — — — — — — — 2009 1636 125.3 -1.33 -1.62 0.907 48.6% +16 -133 -53 42.9% -0.57 5–2 (71%) 7–10 (41%) 102.6 +1.12
23 2021 1561 110.3 +0.25 -1.57 0.933 48.8% — +12 — 42.9% -0.43 0–2 1–1 — +0.01 2010 1768 143.4 +1.15 +0.13 1.018 50.4% -22 -228 -27 51.7% +0.19 13–12 (52%) 15–11 (58%) 105.7 -0.33
24 2022 1560 105.6 -1.45 -1.49 1.079 49.7% — — — 40.0% -1.00 0–1 1–0 — +0.12 2011 1666 130.3 -2.79 -1.92 0.850 47.1% +33 -165 +77 37.3% -0.88 1–5 (17%) 7–3 (70%) 99.8 -1.16
25 2023 1560 107.4 +1.15 -1.85 0.695 44.3% — — — 0.0% -3.00 — — — -0.08 2012 1751 150.1 +1.09 -0.48 0.999 50.0% -33 -229 +124 48.6% +0.04 10–10 (50%) 14–14 (50%) 102.6 -1.49
26 2024 1692 127.5 +1.62 +0.01 1.073 50.6% +20 -109 — 52.1% +0.15 3–7 (30%) 9–7 (56%) 100.2 -0.34 2013 1812 153.1 +0.94 -0.48 0.987 49.9% +15 -243 -31 50.0% +0.05 10–10 (50%) 11–13 (46%) 98.9 -0.77
27 2025 1621 113.5 -0.48 +0.92 1.083 51.0% — — — 25.0% -0.25 — 0–1 — -0.23 2014 1860 158.1 +1.45 -0.54 0.996 50.0% +1 -139 -14 52.7% +0.11 8–9 (47%) 13–14 (48%) 100.1 -3.30
28 2026 1621 101.5 — — — — — — — — — — — — — 2015 1790 143.8 +0.64 +0.10 1.036 50.5% -25 -86 +93 48.4% +0.09 3–7 (30%) 8–8 (50%) 95.5 -1.14
29 — — — — — — — — — — — — — — — — 2016 1707 140.8 -0.07 -2.12 0.894 48.4% -28 -26 +126 33.8% -0.85 2–5 (29%) 5–6 (45%) 97.0 -2.01
30 — — — — — — — — — — — — — — — — 2017 1723 138.9 +1.33 -1.58 0.968 49.5% +6 -29 -40 45.2% -0.31 6–4 (60%) 9–7 (56%) 105.9 -0.43
31 — — — — — — — — — — — — — — — — 2018 1679 132.6 +0.11 -1.51 0.968 49.0% -23 +18 +38 45.8% -0.11 4–6 (40%) 10–14 (42%) 97.3 -0.46
32 — — — — — — — — — — — — — — — — 2019 1576 124.0 -0.42 -1.96 0.862 47.8% +79 +78 — 25.8% -1.00 1–2 (33%) 3–5 (38%) 98.6 -0.40
33 — — — — — — — — — — — — — — — — 2020 1552 113.0 -1.58 +7.36 0.589 40.6% — — — 0.0% -4.00 — — — -0.19
34 — — — — — — — — — — — — — — — — 2021 1538 107.3 -0.95 -2.93 0.484 41.2% — — — 12.5% -2.25 0–1 1–0 — -0.06
35 — — — — — — — — — — — — — — — — 2022 1571 110.4 -1.64 -0.13 0.846 46.2% — — — 50.0% -1.00 — 1–0 — -0.06
Career — 1737 119.7 +1.12 -0.40 1.024 50.0% +20 -64 — 46.6% -0.15 3–10 (23%) 11–9 (55%) 98.1 -2.00 — 1914 147.1 +0.44 -0.79 0.963 49.4% -2 -119 +38 46.1% -0.19 63–74 (46%) 107–108 (50%) 101.5 -2.45

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.