H2H data updated: 2026-09-03 00:00 UTC

Stefan Kozlov vs Tim Smyczek H2H: 0-1

Tim Smyczek holds a 1–0 lead over Stefan Kozlov in their ATP head-to-head. Across 1 main-draw meeting, Tim Smyczek leads 1–0 on hard courts. Most recently, Tim Smyczek won the 2015 Delray Beach Open first round 7-5 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.

Stefan Kozlov
United States Age 28 Right-Handed 183 cm / 6'0"
H2H
0 – 1
1 main draw meetings
Tim Smyczek
USA Age 38 Right-Handed 175 cm / 5'9"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Tim Smyczek #80 7-5 6-2 Stefan Kozlov #406 Match data Feb 19, 2015* R32 Delray Beach 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
Stefan Kozlov #297 #103 558 1,673 9 26 25.7% 0 0 0 0 0 0
Tim Smyczek #862 #68 688 1,768 43 85 33.6% 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 Stefan Kozlov Tim Smyczek
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
15 2013 0–1 0.0% #1083 1,489 0 0 — — — — — — —
16 2014 0–1 0.0% #467 1,453 0 0 — — — — — — —
17 2015 0–2 0.0% #351 1,420 0 0 — — — — — — —
18 2016 3–2 60.0% #116 1,481 0 0 — — — — — — —
19 2017 2–9 18.2% #167 1,549 0 0 — — — — — — —
20 2018 0–1 0.0% #316 1,528 0 0 2008 0–1 0.0% #349 1,491 0 0
22 2020 0–1 0.0% #371 1,514 0 0 2010 1–4 20.0% #171 1,615 0 0
23 2021 0–1 0.0% #159 1,550 0 0 2011 3–6 33.3% #273 1,594 0 0
24 2022 4–8 33.3% #198 1,529 0 0 2012 3–6 33.3% #128 1,732 0 0
25 — — — — — — — 2013 8–11 42.1% #89 1,751 0 0
26 — — — — — — — 2014 7–12 36.8% #115 1,724 0 0
27 — — — — — — — 2015 5–13 27.8% #109 1,590 0 0
28 — — — — — — — 2016 8–10 44.4% #140 1,641 0 0
29 — — — — — — — 2017 1–7 12.5% #130 1,657 0 0
30 — — — — — — — 2018 6–12 33.3% #164 1,595 0 0
31 — — — — — — — 2019 1–3 25.0% #355 1,653 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 Stefan Kozlov Tim Smyczek
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 %
15 2013 — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — —
16 2014 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
17 2015 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — —
18 2016 — — — — — — — — 3 2 5 60.0% — — — — — — — — — — — — —
19 2017 0 6 6 0.0% — — — — 2 3 5 40.0% — — — — — — — — — — — — —
20 2018 — — — — 0 1 1 0.0% — — — — 2008 0 1 1 0.0% — — — — — — — —
22 2020 0 1 1 0.0% — — — — — — — — 2010 1 4 5 20.0% — — — — — — — —
23 2021 0 1 1 0.0% — — — — — — — — 2011 3 4 7 42.9% 0 2 2 0.0% — — — —
24 2022 4 6 10 40.0% — — — — 0 2 2 0.0% 2012 2 4 6 33.3% — — — — 1 2 3 33.3%
25 — — — — — — — — — — — — — 2013 6 9 15 40.0% 1 1 2 50.0% 1 1 2 50.0%
26 — — — — — — — — — — — — — 2014 7 10 17 41.2% — — — — 0 2 2 0.0%
27 — — — — — — — — — — — — — 2015 4 7 11 36.4% 0 3 3 0.0% 1 3 4 25.0%
28 — — — — — — — — — — — — — 2016 6 9 15 40.0% 2 1 3 66.7% — — — —
29 — — — — — — — — — — — — — 2017 1 7 8 12.5% — — — — — — — —
30 — — — — — — — — — — — — — 2018 3 7 10 30.0% 0 2 2 0.0% 3 3 6 50.0%
31 — — — — — — — — — — — — — 2019 1 2 3 33.3% — — — — 0 1 1 0.0%
Career — 4 17 21 19.0% 0 1 1 0.0% 5 8 13 38.5% — 34 64 98 34.7% 3 9 12 25.0% 6 12 18 33.3%

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 Stefan Kozlov Tim Smyczek
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%
15 2013 1/1 4.0 3.0 43.5% 74.5% 42.6% 62.5% 44.4% 56.5% 36.0% — —/— — — — — — — — — —
16 2014 1/1 2.0 4.0 56.4% 61.3% 50.0% 63.6% 16.7% 56.4% 35.5% — —/— — — — — — — — — —
17 2015 2/2 0.5 3.0 44.3% 48.1% 35.6% 27.8% 67.5% 41.3% 42.2% — —/— — — — — — — — — —
18 2016 5/5 4.2 4.8 55.8% 67.8% 41.9% 67.2% 40.4% 56.9% 38.4% — —/— — — — — — — — — —
19 2017 11/11 3.6 4.1 58.0% 65.2% 44.1% 53.2% 35.0% 56.5% 32.9% — —/— — — — — — — — — —
20 2018 1/1 2.0 5.0 50.9% 65.5% 35.7% 20.0% 50.0% 50.9% 28.0% 2008 1/1 1.0 2.0 62.7% 52.4% 48.0% 66.7% 40.0% 50.7% 38.1%
22 2020 1/1 1.0 5.0 68.5% 54.1% 57.1% 36.4% 50.0% 55.1% 31.7% 2010 5/5 2.2 2.4 63.2% 59.8% 52.4% 56.0% 60.9% 57.3% 36.3%
23 2021 1/1 1.0 1.0 76.4% 54.8% 61.5% 42.9% 25.0% 56.4% 32.7% 2011 9/9 1.9 2.3 62.1% 61.7% 52.5% 58.7% 35.2% 58.1% 37.5%
24 2022 12/12 1.6 4.8 72.4% 60.0% 43.6% 59.6% 35.7% 55.2% 36.0% 2012 9/9 4.2 2.7 59.3% 69.1% 49.5% 51.1% 45.2% 61.3% 35.7%
25 — —/— — — — — — — — — — 2013 19/19 5.9 2.4 63.5% 68.8% 53.2% 63.1% 38.8% 62.8% 38.3%
26 — —/— — — — — — — — — — 2014 19/19 4.2 3.0 63.1% 66.6% 48.3% 56.3% 39.5% 59.8% 35.4%
27 — —/— — — — — — — — — — 2015 18/18 3.4 2.6 61.9% 63.7% 50.6% 51.0% 39.1% 58.4% 32.8%
28 — —/— — — — — — — — — — 2016 18/18 5.6 2.7 61.5% 68.2% 49.5% 53.3% 41.3% 60.9% 36.4%
29 — —/— — — — — — — — — — 2017 8/8 4.8 2.1 57.1% 68.3% 48.9% 30.7% 27.7% 59.0% 33.4%
30 — —/— — — — — — — — — — 2018 18/18 5.4 3.3 62.0% 68.2% 47.8% 65.8% 34.4% 60.3% 35.7%
31 — —/— — — — — — — — — — 2019 4/4 3.3 2.3 59.5% 66.4% 53.4% 59.2% 26.8% 61.2% 30.6%
Career — 35/35 2.6 4.3 62.0% 62.4% 43.9% 54.8% 38.2% 55.1% 35.3% — 128/128 4.5 2.7 61.8% 66.5% 50.2% 55.8% 38.7% 60.1% 35.6%

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 Stefan Kozlov Tim Smyczek
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
15 2013 1490 100.2 -4.35 +1.56 0.828 46.1% — — — 33.3% -1.33 0–1 1–0 — +0.13 — — — — — — — — — — — — — — — —
16 2014 1454 100.0 +0.67 0.00 0.813 45.3% — — — 0.0% -3.00 — — — -0.04 — — — — — — — — — — — — — — — —
17 2015 1420 101.3 -5.76 -0.97 0.718 41.8% — — — 0.0% -3.50 — — — +0.21 2005 1481 95.6 — — — — — — — — — — — — —
18 2016 1481 107.5 -3.43 +1.33 0.891 48.1% — — +119 54.5% +0.09 1–0 — — -0.03 2006 1469 96.6 — — — — — — — — — — — — —
19 2017 1550 118.7 -5.47 -0.25 0.757 44.9% -74 — +123 21.7% -1.70 2–1 (67%) 0–3 (0%) — +0.21 — — — — — — — — — — — — — — — —
20 2018 1528 106.2 +0.19 -0.20 0.570 40.2% — — — 0.0% -3.50 — — — -0.08 2008 1492 110.2 -1.24 +1.23 0.773 44.6% — — — 0.0% -2.50 — — — -0.08
21 2019 1514 100.9 — — — — — — — — — — — — — 2009 1504 103.6 — — — — — — — — — — — — —
22 2020 1514 104.1 -1.24 +2.90 0.705 43.9% — — — 33.3% -2.33 0–1 1–0 — -0.06 2010 1615 126.2 -1.65 +0.34 0.851 47.3% +38 — — 25.0% -1.17 0–1 0–3 (0%) — -0.27
23 2021 1550 110.6 +2.69 +0.42 0.749 44.9% — — — 0.0% -3.00 — — — +0.04 2011 1595 115.7 -1.87 -0.72 0.897 47.8% +35 — — 36.0% -0.72 3–3 (50%) 0–5 (0%) — +0.17
24 2022 1530 118.4 -4.38 +0.86 0.803 45.9% +20 — — 32.3% -1.48 2–0 1–1 — -0.54 2012 1732 133.0 -1.86 -0.04 0.924 48.5% +15 — -24 36.0% -0.80 2–2 (50%) 0–2 — -0.71
25 2023 1458 91.9 — — — — — — — — — — — — — 2013 1751 131.8 -0.37 +1.79 1.029 50.3% +19 — — 47.3% -0.04 3–5 (38%) 3–6 (33%) — -0.86
26 2024 1433 92.7 — — — — — — — — — — — — — 2014 1725 132.7 -2.95 +0.13 0.882 48.1% +33 — — 36.2% -0.89 3–2 (60%) 2–4 (33%) — +0.07
27 2025 1436 101.4 — — — — — — — — — — — — — 2015 1590 124.9 -3.58 -1.36 0.788 45.9% +94 -80 +19 30.4% -1.41 2–2 (50%) 4–1 (80%) — +0.13
28 2026 1418 97.5 — — — — — — — — — — — — — 2016 1642 125.1 -2.11 +0.49 0.931 48.7% +36 -106 — 44.9% -0.49 5–5 (50%) 5–4 (56%) — +1.03
29 — — — — — — — — — — — — — — — — 2017 1657 128.4 -2.19 -0.29 0.814 45.7% +53 — — 23.8% -1.43 1–3 (25%) 0–2 — -0.98
30 — — — — — — — — — — — — — — — — 2018 1595 122.2 -2.94 -0.99 0.900 48.8% +5 — +87 38.3% -0.55 2–5 (29%) 4–6 (40%) — +1.02
31 — — — — — — — — — — — — — — — — 2019 1654 113.9 -3.13 -1.39 0.789 45.8% +13 — — 25.0% -1.50 — 0–1 — +0.22
Career — 1674 113.0 -4.10 +0.48 0.784 45.4% -15 — +121 28.4% -1.58 5–3 (63%) 3–4 (43%) 104.8 -0.46 — 1768 131.1 -2.28 -0.07 0.892 48.0% +36 -93 +40 37.1% -0.77 21–28 (43%) 18–34 (35%) 92.8 -0.20

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.