Stefan Kozlov vs Leo Vithoontien — Bloomfield Hills Qualifying Semi-final
Bloomfield Hills · CHALLENGER · Qualifying Semi-final
USA1#296ATP
1429ELO
1408Hard ELO
28 yrs · 183 cm · Right-handed
Last 10 · pre-match
LLWWWLLWWL
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.
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%
64%
1st serve points won·Even
69%
69%
2nd serve points won·Even
49%
52%
Service points won·Even
60%
62%
Return points won·Slight edge
41%
36%
Break points saved·Clear edge
56%
42%
Aces / match·Slight edge
2.8
4.0
Double faults / match·Slight edge
3.9
3.3
Averages over each player's completed matches in the selected window (32 vs 12). 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.
Freshness
Recent loadFreshness·Clear edge
75
95
Kozlov S.: 5 days rest · 1 match, 28 games (7d) · Vithoontien L.: 7 days rest · 1 match, 21 games (7d). Higher means fresher. About
Conditions
Court speed
Medium-fastrewards aggression
SlowFast
Weather
25°CMainly clear
Wind 8 km/hHumidity 42%