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

Marin Cilic vs Stefan Kozlov H2H: 1-0

Marin Cilic holds a 1–0 lead over Stefan Kozlov in their ATP head-to-head. Across 1 main-draw meeting, Marin Cilic leads 1–0 on grass. Most recently, Marin Cilic won the 2017 Queen's Club Championships round of 16 6-0 6-4.

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Marin Cilic
Croatia Age 37 Right-Handed 198 cm / 6'6"
H2H
1 – 0
1 main draw meetings
Stefan Kozlov
United States Age 28 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Marin Cilic #7 6-0 6-4 Stefan Kozlov #149 Match data Jun 23, 2017* R16 Queen's Club Championships ATP 500 Grass

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
Marin Cilic #81 #3 5,155 2,199 578 350 62.3% 1 1 0 2 17 21
Stefan Kozlov #297 #103 558 1,673 9 26 25.7% 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 Marin Cilic Stefan Kozlov
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
15 — — — — — — — 2013 0–1 0.0% #1083 1,489 0 0
16 2005 0–1 0.0% #587 1,486 0 0 2014 0–1 0.0% #467 1,453 0 0
17 2006 5–9 35.7% #170 1,498 0 0 2015 0–2 0.0% #351 1,420 0 0
18 2007 12–12 50.0% #71 1,714 0 0 2016 3–2 60.0% #116 1,481 0 0
19 2008 37–24 60.7% #23 1,908 0 1 2017 2–9 18.2% #167 1,549 0 0
20 2009 45–20 69.2% #14 1,991 0 3 2018 0–1 0.0% #316 1,528 0 0
21 2010 38–21 64.4% #14 1,856 0 5 — — — — — — —
22 2011 40–23 63.5% #21 1,966 0 6 2020 0–1 0.0% #371 1,514 0 0
23 2012 38–18 67.9% #15 2,004 0 8 2021 0–1 0.0% #159 1,550 0 0
24 2013 24–13 64.9% #37 2,005 0 9 2022 4–8 33.3% #198 1,529 0 0
25 2014 51–21 70.8% #9 2,130 1 13 — — — — — — —
26 2015 35–19 64.8% #13 2,064 1 14 — — — — — — —
27 2016 44–21 67.7% #6 2,135 1 16 — — — — — — —
28 2017 43–22 66.2% #6 2,055 1 17 — — — — — — —
29 2018 40–19 67.8% #7 2,053 1 18 — — — — — — —
30 2019 22–20 52.4% #39 1,912 1 18 — — — — — — —
31 2020 11–11 50.0% #42 1,841 1 18 — — — — — — —
32 2021 32–19 62.7% #30 1,928 1 20 — — — — — — —
33 2022 32–20 61.5% #17 1,953 1 20 — — — — — — —
34 2023 1–2 33.3% #672 1,933 1 20 — — — — — — —
35 2024 6–8 42.9% #179 1,827 1 21 — — — — — — —
36 2025 8–11 42.1% #73 1,825 1 21 — — — — — — —
37 2026 14–16 46.7% #81 1,748 1 21 — — — — — — —

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 Marin Cilic Stefan Kozlov
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 %
15 — — — — — — — — — — — — — — — — — 2013 — — — — — — — — 0 1 1 0.0% — — — —
16 2005 — — — — 0 1 1 0.0% — — — — — — — — 2014 0 1 1 0.0% — — — — — — — — — — — —
17 2006 0 3 3 0.0% 4 3 7 57.1% 0 1 1 0.0% 1 2 3 33.3% 2015 0 2 2 0.0% — — — — — — — — — — — —
18 2007 4 4 8 50.0% 2 4 6 33.3% 3 2 5 60.0% 3 2 5 60.0% 2016 — — — — — — — — 3 2 5 60.0% — — — —
19 2008 25 15 40 62.5% 5 6 11 45.5% 7 3 10 70.0% — — — — 2017 0 6 6 0.0% — — — — 2 3 5 40.0% — — — —
20 2009 34 13 47 72.3% 9 5 14 64.3% 2 2 4 50.0% — — — — 2018 — — — — 0 1 1 0.0% — — — — — — — —
21 2010 28 14 42 66.7% 9 5 14 64.3% 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
22 2011 25 14 39 64.1% 13 7 20 65.0% 2 2 4 50.0% — — — — 2020 0 1 1 0.0% — — — — — — — — — — — —
23 2012 14 10 24 58.3% 15 6 21 71.4% 9 2 11 81.8% — — — — 2021 0 1 1 0.0% — — — — — — — — — — — —
24 2013 14 6 20 70.0% 5 5 10 50.0% 5 2 7 71.4% — — — — 2022 4 6 10 40.0% — — — — 0 2 2 0.0% — — — —
25 2014 37 13 50 74.0% 10 6 16 62.5% 4 2 6 66.7% — — — — — — — — — — — — — — — — — — — — —
26 2015 21 10 31 67.7% 7 6 13 53.8% 7 3 10 70.0% — — — — — — — — — — — — — — — — — — — — —
27 2016 34 16 50 68.0% 3 2 5 60.0% 7 3 10 70.0% — — — — — — — — — — — — — — — — — — — — —
28 2017 19 15 34 55.9% 12 4 16 75.0% 12 3 15 80.0% — — — — — — — — — — — — — — — — — — — — —
29 2018 24 13 37 64.9% 10 5 15 66.7% 6 1 7 85.7% — — — — — — — — — — — — — — — — — — — — —
30 2019 15 13 28 53.6% 5 5 10 50.0% 2 2 4 50.0% — — — — — — — — — — — — — — — — — — — — —
31 2020 9 9 18 50.0% 2 2 4 50.0% — — — — — — — — — — — — — — — — — — — — — — — — —
32 2021 18 12 30 60.0% 5 5 10 50.0% 9 2 11 81.8% — — — — — — — — — — — — — — — — — — — — —
33 2022 20 14 34 58.8% 9 5 14 64.3% 3 1 4 75.0% — — — — — — — — — — — — — — — — — — — — —
34 2023 1 1 2 50.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
35 2024 6 7 13 46.2% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
36 2025 5 8 13 38.5% 0 2 2 0.0% 3 1 4 75.0% — — — — — — — — — — — — — — — — — — — — —
37 2026 9 8 17 52.9% 3 5 8 37.5% 2 3 5 40.0% — — — — — — — — — — — — — — — — — — — — —
Career — 362 218 580 62.4% 128 91 219 58.4% 84 37 121 69.4% 4 4 8 50.0% — 4 17 21 19.0% 0 1 1 0.0% 5 8 13 38.5% — — — —

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 909/929 of Marin Cilic's and 35/35 of Stefan Kozlov'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 Marin Cilic Stefan Kozlov
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 2005 1/1 2.0 2.0 50.8% 56.3% 45.2% 20.0% 50.0% 50.8% 33.3% 2014 1/1 2.0 4.0 56.4% 61.3% 50.0% 63.6% 16.7% 56.4% 35.5%
17 2006 14/14 5.4 3.5 54.6% 69.3% 48.4% 59.9% 29.1% 59.6% 34.4% 2015 2/2 0.5 3.0 44.3% 48.1% 35.6% 27.8% 67.5% 41.3% 42.2%
18 2007 24/24 7.0 3.5 52.6% 74.3% 48.5% 57.9% 51.0% 62.1% 36.1% 2016 5/5 4.2 4.8 55.8% 67.8% 41.9% 67.2% 40.4% 56.9% 38.4%
19 2008 59/61 9.3 3.3 53.6% 75.6% 53.2% 60.5% 38.4% 65.3% 37.5% 2017 11/11 3.6 4.1 58.0% 65.2% 44.1% 53.2% 35.0% 56.5% 32.9%
20 2009 65/65 7.8 2.7 56.6% 75.5% 53.6% 61.0% 38.2% 66.3% 40.0% 2018 1/1 2.0 5.0 50.9% 65.5% 35.7% 20.0% 50.0% 50.9% 28.0%
21 2010 59/59 7.2 2.5 58.1% 74.6% 53.5% 66.4% 43.0% 65.7% 38.0% — —/— — — — — — — — — —
22 2011 62/63 7.0 2.6 54.7% 76.4% 54.7% 59.1% 44.6% 66.8% 38.3% 2020 1/1 1.0 5.0 68.5% 54.1% 57.1% 36.4% 50.0% 55.1% 31.7%
23 2012 54/56 6.2 2.7 55.5% 72.4% 53.2% 53.2% 46.7% 64.0% 40.4% 2021 1/1 1.0 1.0 76.4% 54.8% 61.5% 42.9% 25.0% 56.4% 32.7%
24 2013 36/37 8.4 2.4 56.4% 76.9% 57.0% 62.5% 43.3% 68.1% 38.6% 2022 12/12 1.6 4.8 72.4% 60.0% 43.6% 59.6% 35.7% 55.2% 36.0%
25 2014 71/72 10.4 2.8 56.9% 79.0% 50.9% 67.0% 39.5% 66.9% 38.0% — —/— — — — — — — — — —
26 2015 54/54 12.0 2.6 58.8% 77.6% 52.0% 63.8% 41.8% 67.0% 36.8% — —/— — — — — — — — — —
27 2016 62/65 10.4 2.4 55.4% 80.1% 54.7% 59.5% 40.4% 68.9% 37.1% — —/— — — — — — — — — —
28 2017 64/65 11.3 3.1 58.5% 79.9% 54.9% 60.5% 42.7% 69.6% 39.7% — —/— — — — — — — — — —
29 2018 58/59 10.2 3.1 58.8% 80.1% 55.1% 57.3% 40.3% 69.9% 38.1% — —/— — — — — — — — — —
30 2019 41/42 9.7 5.0 58.3% 77.4% 47.7% 61.0% 41.9% 65.1% 35.0% — —/— — — — — — — — — —
31 2020 21/22 10.0 3.8 59.8% 76.2% 50.1% 61.4% 33.4% 65.6% 35.7% — —/— — — — — — — — — —
32 2021 49/51 11.1 3.9 58.2% 79.0% 49.9% 62.9% 38.5% 66.6% 37.0% — —/— — — — — — — — — —
33 2022 51/52 11.5 3.4 59.9% 78.9% 52.2% 61.1% 41.2% 68.0% 38.0% — —/— — — — — — — — — —
34 2023 2/3 9.5 3.0 65.4% 71.9% 42.9% 64.6% 21.4% 62.6% 33.9% — —/— — — — — — — — — —
35 2024 14/14 12.1 4.0 56.2% 77.9% 50.3% 59.7% 54.3% 65.8% 33.3% — —/— — — — — — — — — —
36 2025 19/19 8.7 2.8 57.0% 75.5% 50.9% 55.9% 35.8% 64.8% 30.6% — —/— — — — — — — — — —
37 2026 29/31 9.1 3.2 58.6% 76.8% 48.4% 61.5% 37.2% 65.2% 35.0% — —/— — — — — — — — — —
Career — 909/929 9.3 3.0 57.0% 77.1% 52.6% 60.9% 41.2% 66.6% 37.6% — 35/35 2.6 4.3 62.0% 62.4% 43.9% 54.8% 38.2% 55.1% 35.3%

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 Marin Cilic Stefan Kozlov
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 2005 1486 99.9 -3.62 -1.03 0.677 42.1% — — — 0.0% -3.00 — — — +0.09 2014 1454 100.0 +0.67 0.00 0.813 45.3% — — — 0.0% -3.00 — — — -0.04
17 2006 1498 111.3 -1.65 -2.46 0.850 47.4% -25 +64 — 37.1% -0.77 4–3 (57%) 2–4 (33%) — -0.29 2015 1420 101.3 -5.76 -0.97 0.718 41.8% — — — 0.0% -3.50 — — — +0.21
18 2007 1715 126.8 -0.80 -0.10 0.954 49.3% -39 -98 -126 47.5% -0.11 5–4 (56%) 1–4 (20%) — +0.13 2016 1481 107.5 -3.43 +1.33 0.891 48.1% — — +119 54.5% +0.09 1–0 — — -0.03
19 2008 1908 151.0 +2.06 +1.34 1.082 51.4% -11 -243 -142 57.3% +0.46 10–8 (56%) 13–16 (45%) — -0.68 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 2009 1992 159.4 +3.31 +2.77 1.188 52.7% +28 -214 -200 64.9% +1.04 13–8 (62%) 14–16 (47%) — +2.37 2018 1528 106.2 +0.19 -0.20 0.570 40.2% — — — 0.0% -3.50 — — — -0.08
21 2010 1857 158.2 +2.35 +1.40 1.109 51.8% +72 +14 -102 58.6% +0.73 13–5 (72%) 11–19 (37%) — +1.24 2019 1514 100.9 — — — — — — — — — — — — —
22 2011 1966 162.8 +4.08 +1.86 1.156 52.2% +25 -52 -198 59.6% +0.62 12–7 (63%) 14–9 (61%) — +0.09 2020 1514 104.1 -1.24 +2.90 0.705 43.9% — — — 33.3% -2.33 0–1 1–0 — -0.06
23 2012 2005 160.0 +1.42 +3.57 1.123 52.2% -30 +11 -22 62.0% +0.74 8–3 (73%) 11–15 (42%) — +1.95 2021 1550 110.6 +2.69 +0.42 0.749 44.9% — — — 0.0% -3.00 — — — +0.04
24 2013 2005 157.1 +3.69 +2.41 1.208 52.9% +18 -88 +81 63.4% +0.90 8–5 (62%) 11–4 (73%) — +0.69 2022 1530 118.4 -4.38 +0.86 0.803 45.9% +20 — — 32.3% -1.48 2–0 1–1 — -0.54
25 2014 2130 169.3 +3.49 +2.72 1.150 52.3% +34 -173 -10 65.8% +0.76 13–9 (59%) 20–9 (69%) — -2.53 2023 1458 91.9 — — — — — — — — — — — — —
26 2015 2064 160.5 +3.04 +1.34 1.114 51.7% +53 -93 +78 60.4% +0.54 12–8 (60%) 26–9 (74%) — +1.96 2024 1433 92.7 — — — — — — — — — — — — —
27 2016 2136 171.9 +5.19 +1.67 1.193 52.6% +11 -180 +58 63.1% +0.86 11–8 (58%) 14–17 (45%) — +1.16 2025 1436 101.4 — — — — — — — — — — — — —
28 2017 2055 166.2 +4.81 +4.38 1.303 53.9% -89 -3 +181 63.1% +0.91 10–12 (45%) 16–14 (53%) — +0.86 2026 1418 97.5 — — — — — — — — — — — — —
29 2018 2054 170.8 +5.78 +3.23 1.264 53.3% -14 +7 +214 64.3% +0.99 9–10 (47%) 20–18 (53%) — -0.29 — — — — — — — — — — — — — — — —
30 2019 1912 154.6 +1.14 -0.18 1.003 50.4% +27 +85 +277 54.5% +0.15 5–6 (45%) 16–9 (64%) — +1.07 — — — — — — — — — — — — — — — —
31 2020 1842 146.2 +1.45 -0.54 1.037 50.2% +6 +126 — 45.5% -0.05 7–4 (64%) 4–8 (33%) — -0.50 — — — — — — — — — — — — — — — —
32 2021 1929 146.3 +3.33 +0.85 1.108 51.7% -35 +4 +247 57.9% +0.43 13–8 (62%) 12–12 (50%) — +0.01 — — — — — — — — — — — — — — — —
33 2022 1953 160.1 +4.07 +1.98 1.190 52.7% -43 +52 +215 60.6% +0.86 8–10 (44%) 11–11 (50%) — +0.30 — — — — — — — — — — — — — — — —
34 2023 1933 104.1 +0.22 +0.03 0.907 49.3% — — — 40.0% 0.00 1–0 — — +0.03 — — — — — — — — — — — — — — — —
35 2024 1827 133.0 +0.92 -0.98 0.975 50.1% -8 — — 45.7% 0.00 2–3 (40%) 5–7 (42%) — -0.06 — — — — — — — — — — — — — — — —
36 2025 1825 142.2 +1.69 -2.10 0.870 48.1% +3 — +327 43.1% -0.45 2–2 (50%) 3–5 (38%) — -1.90 — — — — — — — — — — — — — — — —
37 2026 1748 138.1 +0.73 +0.14 1.005 50.1% +67 0 +279 48.6% -0.11 4–4 (50%) 6–8 (43%) — -0.86 — — — — — — — — — — — — — — — —
Career — 2200 164.7 +3.06 +1.77 1.127 51.9% +6 -47 +77 59.1% +0.60 170–127 (57%) 230–214 (52%) 99.2 +0.53 — 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

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.