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TJPlayer research cockpit

Barbara Kostecka

TennisJack analysis

Barbara Kostecka currently has a early TennisJack sample of 12 completed matches, with a 66.7% win rate in the loaded match history. The recent form line is 6-4 across the latest 10 completed matches.

Latest rank #1037
M
Matches12Completed matches
%
Win rate66.7%Across all matches
F
Latest form6-4In latest 10 matches
Performance metrics
Hold Base56.8%
Break Pressure56.9%
Latest form (10 matches)
6-4
W Oldest W 2 W 3 L 4 W 5 L 6 W 7 L 8 W 9 L Latest
Surface profile
Hardcourt outdoor 9 matches · 77.8% WR
Poland flag
CountryPolandCountry profile
PlayRightRight-handed
Highest Rank#986Singles career high
Age / Birthday17Born 1 Jan 2009
Profile intelligence

Ten signals worth watching.

Built from 12 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
Set 1 punch50.0%
Service shield56.8%
Return bite56.9%
Decider risk41.7%
02

Favorite / Underdog Split

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

Favorite 50.0% 1-1 - 2 matches Avg odds 1.56 | 1+ set 100.0%
Underdog 75.0% 6-2 - 8 matches Avg odds 3.32 | 1+ set 75.0%
03

First Set Personality

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

Set 1 win50.0%
Breaks first S150.0%
Broken first S150.0%
Recovers S150.0%
04

Break Pressure Profile

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

Avg breaks6.17
Avg broken5.00
Balance1.17
Clean service matches8.3%
3+ breaks produced91.7%
Set 2 win75.0%
05

Clean Win / Comeback Index

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

25.0%Clean 2-0 share among wins
Clean 2-0 wins2
Comeback signals9
Lost set 1, won match2
Comeback index75.0%
06

Surface Edge

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

Primary surfaceHardcourt outdoor
Primary record7-2
Primary WR77.8%
Best surfaceHardcourt outdoor 77.8%
Hardcourt outdoor7-277.8%
Clay1-150.0%
Hardcourt indoor0-10.0%
07

Odds Value Pulse

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

Avg win odds2.46
Avg loss odds4.16
Biggest win odds3.40
2.00+ odds WR75.0%
2.00+ sample8
Odds sample10
08

Decider Profile

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

Three-set share41.7%
Decider record3-2
Set 3 win60.0%
After losing S133.3%
09

Close Set Risk

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

Close sets8-6
Close-set WR57.1%
Tie-breaks1-0
Matches with tight set7
10

Momentum Trend

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

Cooling down · 1 losses running
W oldest W 2 W 3 L 4 W 5 L 6 W 7 L 8 W 9 L latest
Latest 5 2-3 40.0% WR
Trend delta -45.7% latest vs previous sample
Match log

All Barbara Kostecka matches in the TennisJack sample.

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

Open Player Research
Win
13.07.2025
ITF W15 Grodzisk MazowieckiHardcourt outdoor
Barbara Kostecka
vs
Ania Hertel
3.25
1.33
5-7 7-5 6-4
Hold
64.7%
Break
41.2%