Stefan Kozlov vs Ramkumar RamanathanChicago CH Qualifying Round 1

Chicago CH · CHALLENGER · Qualifying Round 1
#296ATP
1429ELO
1408Hard ELO
28 yrs · 183 cm · Right-handed
Last 10 · pre-match
LWWWLLWWLW
0 — 0
Sets
Retired
Monday, 4 August 2025
hard
#1338ATP
31 yrs · 188 cm · Right-handed
Last 10 · pre-match
LLLWLLLLLL
Kozlov S.
6-1 6-7 5-3
Ramanathan R.
Kozlov S.
6645
Ramanathan R.
1773

Stefan Kozlov advanced when Ramkumar Ramanathan retired 6-1 6-7 5-3 in the Chicago CH qualifying round 1. Stefan Kozlov claimed a first win over Ramkumar Ramanathan in three meetings, narrowing the head-to-head to 2–1.

Head to head

02
DateTournamentRoundSurfaceWinnerScore
2022-07-25AtlantaQ1hardRamkumar Ramanathan6-0 6-1
2018-02-19Delray BeachQ1hardRamkumar Ramanathan6-3 6-2

Serve vs return

This season
Kozlov S.serving84% hold

wins 66% of points on serve vs Ramanathan R.

Ramanathan R.serving70% hold

wins 58% of points on serve vs Kozlov S.

Serve advantage — Kozlov S.

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Statistics

This season
1st serve in·Even
62%
60%
1st serve points won·Slight edge
67%
73%
2nd serve points won·Even
49%
47%
Service points won·Even
60%
62%
Return points won·Slight edge
43%
33%
Break points saved·Even
56%
55%
Aces / match·Dominant
2.5
6.9
Double faults / match·Slight edge
3.0
3.6

Averages over each player's completed matches in the selected window (66 vs 25). ATP, WTA & Challenger.

Clutch

Under pressure
Clutch Rating·Dominant
36
6
Break points saved·Clear edge
49
67
Break points won·Clear edge
20
1
Deciding sets·Dominant
85
19
Tiebreaks·Dominant
30
0

Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About

Umpiry Score

Pre-match
5.6
Slight disadvantageUmpiry ScorePartial · surface data limited
  • Extended break: 28 days (−0.3)
5.7
Slight disadvantageUmpiry ScorePartial · surface data limited
Form & Matchup
5.0
H2H
5.0
6.1
Surface form
3.1
0.0Lost last 2
Win streak
0.0
Fatigue & Travel
Minutes 14d
9.3
7.0
Prev. match
9.0
7.0
Surface transition
Context
5.0
Defending pts
5.0

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 load
Freshness·Dominant
69
97

Kozlov S.: 4 days rest · 3 matches, 72 games (7d) · Ramanathan R.: 9 days rest · 1 match (14d). Higher means fresher. About

Conditions

Court speed
Mediumbalanced pace
SlowFast