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

Stefan Kozlov vs Joao Sousa

Compare the head-to-head record, career totals, season-by-season performance, and match log for Stefan Kozlov vs Joao Sousa.

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Stefan Kozlov
United States Age 28 Right-Handed 183 cm / 6'0"
H2H
0 – 0
0 main draw meetings
Joao Sousa
POR Age 37 Right-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Stefan Kozlov #389 6-2 2-6 6-3 Joao Sousa #102 Match data Mar 15, 2021 Q2 Q Mexican Open ATP 500 Hard

1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. 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
Joao Sousa #954 #28 1,355 1,916 190 250 43.2% 0 0 0 0 4 4

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 Joao Sousa
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 2008 1–1 50.0% #592 1,550 0 0
20 2018 0–1 0.0% #316 1,528 0 0 — — — — — — —
22 2020 0–1 0.0% #371 1,514 0 0 2011 1–1 50.0% #192 1,507 0 0
23 2021 0–1 0.0% #159 1,550 0 0 2012 3–4 42.9% #101 1,587 0 0
24 2022 4–8 33.3% #198 1,529 0 0 2013 14–13 51.9% #49 1,797 0 1
25 — — — — — — — 2014 23–34 40.4% #54 1,738 0 1
26 — — — — — — — 2015 34–30 53.1% #33 1,904 0 2
27 — — — — — — — 2016 25–33 43.1% #43 1,805 0 2
28 — — — — — — — 2017 22–30 42.3% #57 1,735 0 2
29 — — — — — — — 2018 25–26 49.0% #44 1,782 0 3
30 — — — — — — — 2019 25–28 47.2% #60 1,757 0 3
31 — — — — — — — 2020 0–9 0.0% #90 1,607 0 3
32 — — — — — — — 2021 1–13 7.1% #140 1,534 0 3
33 — — — — — — — 2022 13–20 39.4% #82 1,565 0 4
34 — — — — — — — 2023 3–7 30.0% #249 1,510 0 4
35 — — — — — — — 2024 0–1 0.0% #726 1,503 0 4

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 Joao Sousa
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% 2008 — — — — 1 1 2 50.0% — — — —
20 2018 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
22 2020 0 1 1 0.0% — — — — — — — — 2011 — — — — 1 1 2 50.0% — — — —
23 2021 0 1 1 0.0% — — — — — — — — 2012 — — — — 3 4 7 42.9% — — — —
24 2022 4 6 10 40.0% — — — — 0 2 2 0.0% 2013 12 9 21 57.1% 2 4 6 33.3% — — — —
25 — — — — — — — — — — — — — 2014 12 18 30 40.0% 7 13 20 35.0% 4 3 7 57.1%
26 — — — — — — — — — — — — — 2015 18 17 35 51.4% 14 9 23 60.9% 2 4 6 33.3%
27 — — — — — — — — — — — — — 2016 12 20 32 37.5% 11 10 21 52.4% 2 3 5 40.0%
28 — — — — — — — — — — — — — 2017 10 14 24 41.7% 12 13 25 48.0% 0 3 3 0.0%
29 — — — — — — — — — — — — — 2018 15 17 32 46.9% 8 6 14 57.1% 2 3 5 40.0%
30 — — — — — — — — — — — — — 2019 11 12 23 47.8% 10 12 22 45.5% 4 4 8 50.0%
31 — — — — — — — — — — — — — 2020 0 6 6 0.0% 0 3 3 0.0% — — — —
32 — — — — — — — — — — — — — 2021 1 3 4 25.0% 0 8 8 0.0% 0 2 2 0.0%
33 — — — — — — — — — — — — — 2022 6 9 15 40.0% 7 8 15 46.7% 0 3 3 0.0%
34 — — — — — — — — — — — — — 2023 0 2 2 0.0% 3 5 8 37.5% — — — —
35 — — — — — — — — — — — — — 2024 — — — — 0 1 1 0.0% — — — —
Career — 4 17 21 19.0% 0 1 1 0.0% 5 8 13 38.5% — 97 127 224 43.3% 79 98 177 44.6% 14 25 39 35.9%

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 35/35 of Stefan Kozlov's and 436/440 of Joao Sousa'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 Stefan Kozlov Joao Sousa
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% 2008 2/2 3.5 1.5 58.6% 67.3% 65.4% 70.8% 31.3% 66.6% 39.5%
20 2018 1/1 2.0 5.0 50.9% 65.5% 35.7% 20.0% 50.0% 50.9% 28.0% — —/— — — — — — — — — —
22 2020 1/1 1.0 5.0 68.5% 54.1% 57.1% 36.4% 50.0% 55.1% 31.7% 2011 2/2 3.0 1.0 60.3% 61.5% 41.4% 29.8% 58.3% 53.5% 34.6%
23 2021 1/1 1.0 1.0 76.4% 54.8% 61.5% 42.9% 25.0% 56.4% 32.7% 2012 7/7 2.1 3.1 59.5% 66.3% 47.7% 45.8% 29.7% 59.0% 40.6%
24 2022 12/12 1.6 4.8 72.4% 60.0% 43.6% 59.6% 35.7% 55.2% 36.0% 2013 27/27 2.9 2.3 61.8% 68.0% 46.5% 57.4% 38.5% 59.6% 36.1%
25 — —/— — — — — — — — — — 2014 56/57 2.7 2.1 60.3% 67.6% 48.1% 61.1% 37.5% 59.5% 35.1%
26 — —/— — — — — — — — — — 2015 64/64 3.0 2.1 59.2% 70.2% 51.9% 61.3% 42.7% 62.8% 37.0%
27 — —/— — — — — — — — — — 2016 56/58 3.4 2.2 63.4% 69.2% 47.7% 50.2% 42.9% 61.2% 36.5%
28 — —/— — — — — — — — — — 2017 52/52 4.5 2.8 58.5% 72.3% 49.8% 56.2% 38.4% 62.7% 36.5%
29 — —/— — — — — — — — — — 2018 51/51 4.2 2.4 60.3% 72.2% 49.4% 49.3% 35.8% 63.1% 37.5%
30 — —/— — — — — — — — — — 2019 53/53 5.1 1.8 61.7% 70.5% 49.4% 55.1% 38.5% 62.3% 34.5%
31 — —/— — — — — — — — — — 2020 9/9 4.3 2.9 57.1% 63.3% 48.5% 51.5% 35.3% 56.6% 31.7%
32 — —/— — — — — — — — — — 2021 13/14 2.7 2.2 59.1% 63.1% 44.6% 47.1% 31.2% 54.6% 33.4%
33 — —/— — — — — — — — — — 2022 33/33 3.6 2.4 62.3% 67.9% 49.2% 54.1% 34.8% 60.9% 37.2%
34 — —/— — — — — — — — — — 2023 10/10 2.1 2.0 59.4% 62.8% 43.7% 49.1% 35.6% 55.3% 31.3%
35 — —/— — — — — — — — — — 2024 1/1 2.0 2.0 56.3% 64.4% 51.4% 50.0% 25.0% 58.8% 34.7%
Career — 35/35 2.6 4.3 62.0% 62.4% 43.9% 54.8% 38.2% 55.1% 35.3% — 436/440 3.6 2.2 60.6% 69.3% 48.9% 55.0% 38.5% 61.2% 36.1%

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 Stefan Kozlov Joao Sousa
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 — — — — — — — — — — — — — — — —
18 2016 1481 107.5 -3.43 +1.33 0.891 48.1% — — +119 54.5% +0.09 1–0 — — -0.03 — — — — — — — — — — — — — — — —
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%) 100.1 +0.21 2008 1551 109.7 -0.19 -0.49 1.182 54.2% — — — 50.0% +0.75 — 0–1 — +0.24
20 2018 1528 106.2 +0.19 -0.20 0.570 40.2% — — — 0.0% -3.50 — — — -0.08 2009 1550 98.4 — — — — — — — — — — — — —
21 2019 1514 100.9 — — — — — — — — — — — — — 2010 1543 103.0 — — — — — — — — — — — — —
22 2020 1514 104.1 -1.24 +2.90 0.705 43.9% — — — 33.3% -2.33 0–1 1–0 — -0.06 2011 1507 100.3 -2.74 +2.42 0.742 44.6% — — — 0.0% -3.00 — — — +0.20
23 2021 1550 110.6 +2.69 +0.42 0.749 44.9% — — — 0.0% -3.00 — — — +0.04 2012 1587 111.9 -2.10 -0.18 0.991 49.4% — +54 — 41.2% -0.77 1–2 (33%) 2–1 (67%) — +0.38
24 2022 1530 118.4 -4.38 +0.86 0.803 45.9% +20 — — 32.3% -1.48 2–0 1–1 — -0.54 2013 1797 138.5 -2.50 -0.67 0.896 48.2% -3 -191 — 47.9% -0.34 6–1 (86%) 1–2 (33%) 107.8 +0.54
25 2023 1458 91.9 — — — — — — — — — — — — — 2014 1738 146.5 -2.75 -1.03 0.869 47.5% +1 -106 -36 39.7% -0.87 12–10 (55%) 14–11 (56%) 104.6 -0.16
26 2024 1433 92.7 — — — — — — — — — — — — — 2015 1904 152.2 -1.01 +1.38 0.995 49.9% -46 -72 -203 50.0% 0.00 15–9 (63%) 12–15 (44%) 105.2 -0.31
27 2025 1436 101.4 — — — — — — — — — — — — — 2016 1806 151.2 -1.66 +0.21 0.941 48.8% +1 +17 -112 44.7% -0.45 9–13 (41%) 6–9 (40%) 95.1 +1.35
28 2026 1418 97.5 — — — — — — — — — — — — — 2017 1736 145.9 -0.81 -0.18 0.979 49.7% +18 +58 -117 46.3% -0.23 7–14 (33%) 8–12 (40%) 90.3 +2.40
29 — — — — — — — — — — — — — — — — 2018 1783 147.5 -0.33 +1.07 1.015 50.0% +38 -32 -147 46.7% -0.07 14–11 (56%) 12–10 (55%) 101.9 +1.17
30 — — — — — — — — — — — — — — — — 2019 1758 141.2 -1.27 -1.02 0.916 48.4% +5 -7 -4 45.8% -0.41 13–10 (57%) 11–13 (46%) 101.4 -0.09
31 — — — — — — — — — — — — — — — — 2020 1608 110.6 -2.88 -2.72 0.729 44.1% +41 +32 — 8.7% -2.35 0–1 0–3 (0%) — +0.04
32 — — — — — — — — — — — — — — — — 2021 1534 111.8 -5.26 -2.49 0.736 44.3% +92 +15 — 17.1% -2.14 1–3 (25%) 3–3 (50%) 98.3 +0.37
33 — — — — — — — — — — — — — — — — 2022 1565 131.7 -1.95 -0.02 0.952 48.8% +14 +70 +27 40.2% -0.41 6–6 (50%) 6–12 (33%) 99.0 +0.40
34 — — — — — — — — — — — — — — — — 2023 1510 117.4 -3.91 -3.09 0.700 43.9% — +62 — 32.0% -1.80 2–2 (50%) 2–1 (67%) 102.3 -0.20
35 — — — — — — — — — — — — — — — — 2024 1504 100.9 +0.27 +1.28 0.840 47.1% — — — 0.0% -2.00 — — — -0.10
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 — 1917 144.3 -1.66 -0.16 0.928 48.6% +4 -9 -83 43.2% -0.48 86–82 (51%) 77–93 (45%) 99.0 +1.42

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.