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TJPlayer research cockpit

Stefan Kozlov

TennisJack analysis

Stefan Kozlov currently has a large TennisJack sample of 56 completed matches, with a 60.7% win rate in the loaded match history. The recent form line is 6-4 across the latest 10 completed matches.

Latest rank #296
M
Matches56Completed matches
%
Win rate60.7%Across all matches
F
Latest form6-4In latest 10 matches
Performance metrics
Hold Base74.4%
Break Pressure30.3%
Latest form (10 matches)
6-4
W Oldest L 2 W 3 L 4 W 5 L 6 W 7 W 8 W 9 L Latest
Surface profile
Hardcourt outdoor 23 matches · 56.5% WR
USA flag
CountryUSACountry profile
PlayRightRight-handed
Highest Rank#103Singles career high
Age / Birthday28Born 1 Feb 1998
Profile intelligence

Ten signals worth watching.

Built from 56 completed TennisJack matches: form, surface, odds, pressure and close-set behavior. The full match log stays below for audit.

01

Player DNA

Quick fingerprint from starts, service base, return bite and decider exposure.

Balanced starts Break-heavy player Close-set risk Stable server
Set 1 punch57.1%
Service shield74.4%
Return bite30.3%
Decider risk48.2%
02

Favorite / Underdog Split

How the player behaves when priced as market favorite versus outsider.

Favorite 69.4% 25-11 - 36 matches Avg odds 1.38 | 1+ set 83.3%
Underdog 37.5% 6-10 - 16 matches Avg odds 2.39 | 1+ set 68.8%
03

First Set Personality

Shows whether the player starts cleanly, breaks first, or survives early pressure.

Set 1 win57.1%
Breaks first S152.7%
Broken first S147.3%
Recovers S130.8%
04

Break Pressure Profile

Return damage versus service leakage, built from set-level break counters.

Avg breaks3.55
Avg broken3.04
Balance0.52
Clean service matches8.9%
3+ breaks produced76.8%
Set 2 win55.4%
05

Clean Win / Comeback Index

Separates smooth 2-0 wins from matches where the player had to repair damage.

35.3%Clean 2-0 share among wins
Clean 2-0 wins12
Comeback signals30
Lost set 1, won match4
Comeback index53.6%
06

Surface Edge

Where the profile is most trustworthy and where the win rate really travels.

Primary surfaceHardcourt outdoor
Primary record13-10
Primary WR56.5%
Best surfaceGrass 75.0%
Hardcourt outdoor13-1056.5%
Hardcourt indoor11-568.8%
Clay7-653.8%
Grass3-175.0%
07

Odds Value Pulse

Shows whether the player wins as expected or creates value at outsider prices.

Avg win odds1.52
Avg loss odds1.94
Biggest win odds2.63
2.00+ odds WR33.3%
2.00+ sample15
Odds sample52
08

Decider Profile

How often matches become complicated, and whether the player survives the third set.

Three-set share48.2%
Decider record16-11
Set 3 win59.3%
After losing S116.7%
09

Close Set Risk

Tie-break and 7-5 / 7-6 pressure profile, useful for spotting fragile edges.

Close sets38-25
Close-set WR60.3%
Tie-breaks9-9
Matches with tight set43
10

Momentum Trend

Compares the latest 5 matches with the previous 10 so form shifts are visible immediately.

Stable form · 1 losses running
W oldest L 2 W 3 L 4 W 5 L 6 W 7 W 8 W 9 L latest
Latest 5 3-2 60.0% WR
Trend delta +10.0% latest vs previous sample
Match log

All Stefan Kozlov matches in the TennisJack sample.

Scan date, tournament, surface, players, odds, final score, result and service-return indicators from completed matches.

Open Player Research
Loss
14.07.2026R32
Challenger PozoblancoHardcourt outdoor
Yi Zhou
vs
Stefan Kozlov
1.57
2.25
6-3 3-6 6-4
Hold
64.3%
Break
28.6%
Win
09.07.2026R32
Challenger NewportGrass
Stefan Kozlov
vs
Yibing Wu
4.00
1.22
6-4 2-6 6-4
Hold
64.3%
Break
35.7%
Win
05.07.2026Round 14
Challenger NewportGrass
Stefan Kozlov
vs
Aidan Mayo
2.00
1.73
7-6 5-7 6-3
Hold
81.2%
Break
22.2%
Loss
22.04.2026R16
Challenger SavannahClay
Stefan Kozlov
vs
Nick Hardt
1.80
1.91
2-6 6-2 0-6
Hold
36.4%
Break
36.4%
Loss
19.03.2026R16
Challenger MorelosHardcourt outdoor
Stefan Kozlov
vs
Michael Mmoh
2.63
1.44
5-7 2-6
Hold
40.0%
Break
30.0%
Loss
11.03.2026R32
Challenger PhoenixHardcourt outdoor
Jay Friend
vs
Stefan Kozlov
1.62
2.20
6-2 4-6 6-3
Hold
53.9%
Break
28.6%
Win
10.03.2026Round 19
Challenger PhoenixHardcourt outdoor
Stefan Kozlov
vs
Marc Polmans
1.44
2.63
6-1 3-6 6-4
Hold
84.6%
Break
25.0%
Win
18.02.2026R16
Challenger MetepecHardcourt outdoor
Stefan Kozlov
vs
Karl Poling
1.13
6.00
6-4 7-6
Hold
72.7%
Break
33.3%
Win
04.02.2026R16
Challenger ClevelandHardcourt indoor
Stefan Kozlov
vs
Raphael Perot
1.36
3.00
7-6 3-6 6-3
Hold
71.4%
Break
25.0%
Loss
08.01.2026QF
Challenger NottinghamHardcourt indoor
Stefan Kozlov
vs
Toby Samuel
2.75
1.40
6-7 4-6
Hold
81.8%
Break
8.3%
Win
06.01.2026R32
Challenger NottinghamHardcourt indoor
Stefan Kozlov
vs
Tyler Zink
1.30
3.40
6-4 6-1
Hold
100.0%
Break
44.4%
Win
13.11.2025R16
Challenger ChampaignHardcourt indoor
Stefan Kozlov
vs
Tyler Zink
1.57
2.25
6-3 6-3
Hold
88.9%
Break
44.4%
Win
11.11.2025R32
Challenger ChampaignHardcourt indoor
Stefan Kozlov
vs
Leo Borg
1.40
2.75
6-1 6-0
Hold
100.0%
Break
83.3%
Loss
05.11.2025R16
Challenger KnoxvilleHardcourt indoor
Stefan Kozlov
vs
Jay Clarke
2.25
1.57
2-6 6-2 3-6
Hold
75.0%
Break
15.4%
Loss
29.05.2025R16
Challenger Little RockHardcourt outdoor
Andres Andrade
vs
Stefan Kozlov
2.10
1.67
6-1 4-6 7-5
Hold
40.0%
Break
42.9%
Win
28.05.2025Round 19
Challenger Little RockHardcourt outdoor
Stefan Kozlov
vs
Elmar Ejupovic
1.40
2.75
6-4 7-6
Hold
100.0%
Break
8.3%
Win
28.05.2025Round 14
Challenger Little RockHardcourt outdoor
Stefan Kozlov
vs
Kiranpal Pannu
1.13
5.50
7-6 2-6 6-2
Hold
64.3%
Break
33.3%
Win
15.05.2025
ITF M25 XalapaHardcourt outdoor
Stefan Kozlov
vs
Axel Nefve
1.06
8.00
6-4 6-4
Hold
80.0%
Break
40.0%