Stefan Kozlov vs Leo Vithoontien — Bloomfield Hills Qualifying Semi-final
Bloomfield Hills · CHALLENGER · Qualifying Semi-final
USA1#297ATP
1429ELO
1408Hard ELO
28 yrs · 183 cm · Right-handed
Last 10 · pre-match
LWLLLLLWWW
2 — 1
Sets
Sunday, 19 July 2026 ·
hard
CENTER COURT · 3rd on
Kozlov S.4-6 6-1 6-2
Vithoontien L.
Kozlov S.
4662
Vithoontien L.
6121
Stefan Kozlov advanced to the Bloomfield Hills semifinals by defeating Leo Vithoontien 4-6, 6-1, 6-2. Kozlov hit 4 aces and 2 double faults, winning 70% of his first serves and converting 36% of break points. He converted 4 service breaks to Vithoontien's 1.
Generated automatically from Umpiry match data.
Key context
- Match story: Stefan Kozlov dropped the opening set before beating Leo Vithoontien 4–6 6–1 6–2.
Head to head
No previous meetings on record.
Statistics
This season1st serve in·Slight edge
58%
63%
1st serve points won·Even
69%
67%
2nd serve points won·Even
48%
52%
Service points won·Even
60%
61%
Return points won·Even
41%
37%
Break points saved·Clear edge
55%
40%
Aces / match·Slight edge
2.7
3.5
Double faults / match·Even
3.8
3.5
Averages over each player's completed matches in the selected window (32 vs 10). ATP, WTA & Challenger.
Umpiry Score
Pre-match5.8
Slight disadvantageUmpiry ScorePartial · surface data limited5.9
Even matchUmpiry ScorePartial · surface data limitedForm & Matchup
5.0No prior meetings
H2H5.0No prior meetings
2.93 of last 10 on hard
Surface form4.55 of last 10 on hard
0.0Lost last 2
Win streak0.0Lost last 2
Fatigue & Travel
0.04 three-setters in 14 days
3-set countContext
5.0Didn't play here last year
Defending pts5.0Didn't play here last year
The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
Conditions
Court speed
Medium-fastrewards aggression
SlowFast
Weather
25°CMainly clear
Wind 8 km/hHumidity 42%