Jay Clarke vs Stefan Kozlov — Knoxville CH Round of 16

Knoxville CH · CHALLENGER · Round of 16
GBR2
Jay Clarke
#246ATP
1458ELO
1421Hard ELO
27 yrs · 183 cm · Right-handed
Last 10 · pre-match
LLWWWLLLWL
2 — 1
Sets
Monday, 3 November 2025
hard
Stefan Kozlov
USA
Stefan Kozlov
#317ATP
1429ELO
1408Hard ELO
28 yrs · 183 cm · Right-handed
Last 10 · pre-match
LWWWLLWWLW
Clarke J.
6-2 2-6 6-3
Kozlov S.
Clarke J.
6262
Kozlov S.
2631

Jay Clarke defeated Stefan Kozlov 6-2 2-6 6-3 in the Knoxville CH round of 16 on hard. The result followed the form book — Jay Clarke came in ranked #246, defending last year's quarter-final.

Key context

  • Match story: Jay Clarke closed it out in three sets, 6–2 2–6 6–3.

Head to head

No previous meetings on record.

Serve vs return

This season
Clarke J.serving66% hold

wins 57% of points on serve vs Kozlov S.

Kozlov S.serving70% hold

wins 58% of points on serve vs Clarke J.

Baseline battle — serve is shaky, expect plenty of breaks

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
Clarke J.Kozlov S.
1st serve in·Even
58%
62%
1st serve points won·Even
69%
67%
2nd serve points won·Even
48%
49%
Service points won·Even
60%
60%
Return points won·Even
41%
43%
Break points saved·Even
60%
56%
Aces / match·Slight edge
3.4
2.5
Double faults / match·Even
2.8
3.0

Averages over each player's completed matches in the selected window (79 vs 66). ATP, WTA & Challenger.

Clutch

Under pressure
Clarke J.Kozlov S.
Clutch Rating·Dominant
8
36
Break points saved·Clear edge
63
49
Break points won·Even
21
20
Deciding sets·Dominant
10
85
Tiebreaks·Dominant
4
30

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

Umpiry Score

Pre-match
Clarke J.
5.9
Even matchUmpiry Score
Kozlov S.
4.4
Heavy underdogUmpiry Score
  • Extended break: 91 days (−1.5)
Form & Matchup
5.0+13 Hard Elo edge
Surface ELO
5.0Hard Elo 1408
5.0Overall Elo 1458
ELO gap
5.0Overall Elo 1429
5.0No prior meetings
H2H
5.0
3.1
Surface form
5.9
0.0
Win streak
0.0
Fatigue & Travel
7.1
Minutes 14d
7.0
3-set count
8.0
Prev. match
Context
7.0
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
Clarke J.Kozlov S.
Freshness·Dominant
100
59

Clarke J.: 20 days rest · Kozlov S.: 2 days rest · 4 matches, 106 games (7d). Higher means fresher. About

Conditions

Court speed
Fastbig serves, short points
SlowFast
Final
Krueger M.[5]
Blanch D.
6-726-46-1
Semi-finals
Krueger M.[5]
Stebe C.
6-46-1
Blanch D.
Glinka D.[6]
6-47-62
Quarter-finals
Krueger M.[5]
Montes De La Torre I.
7-56-4
Stebe C.
Cassone M.
7-6136-3
Glinka D.[6]
Mitsui S.
7-56-3
Blanch D.
Clarke J.[2]
6-37-65
R16
Montes De La Torre I.
Trotter J.[1]
7-637-66
Cassone M.
Mejia N.[3]
6-35-76-3
Krueger M.[5]
Ghibaudo A.
6-26-1
Blanch D.
Martin A.[8]
6-46-4
Clarke J.[2]
Kozlov S.
6-22-66-3
Stebe C.
Tarvet O.
6-37-65
Glinka D.[6]
Perez A.
6-36-4
Mitsui S.
Wiskandt M.
6-16-736-2
R32
Montes De La Torre I.
Rosenkranz M.
6-12-0
Mitsui S.
Suresh D.
7-637-60
Krueger M.[5]
Roh H.
6-26-3
Mejia N.[3]
Thanos A.
6-47-5
Cassone M.
Soto M.
6-36-2
Tarvet O.
Ilagan A.
3-66-37-66
Perez A.
Fenty A.
6-46-3
Wiskandt M.
Borg L.
4-66-16-2
Martin A.[8]
Zink T.
6-36-2
Kozlov S.
Rolland D.
7-612-66-1
Clarke J.[2]
Rocha F.
6-16-4
Trotter J.[1]
Broom C.
6-41-67-64
Ghibaudo A.
Purtseladze S.
6-26-2
Blanch D.
Kotzen A.
6-46-2
Glinka D.[6]
Makk P.
6-26-4
Stebe C.
Rybakov A.[7]
6-757-626-0