James Duckworth vs Stefan KozlovMexico City CH Round of 16

Mexico City CH · CHALLENGER · Round of 16
#79ATP
1628ELO
1573Clay ELO
$485kYTD
$5.4MCAREER
34 yrs · 183 cm · Right-handed
Last 10 · pre-match
LWLLLWLWLL
2 — 0
Sets
Monday, 6 April 2026
clay
#317ATP
1429ELO
1397Clay ELO
28 yrs · 183 cm · Right-handed
Last 10 · pre-match
WWWLLWWLWW
Duckworth J.
6-3 6-2
Kozlov S.
Duckworth J.
662
Kozlov S.
320

James Duckworth defeated Stefan Kozlov 6-3 6-2 in the Mexico City CH round of 16 on clay. The result followed the form book — James Duckworth came in ranked #79, defending last year's round of 16.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Duckworth J.serving72% hold

wins 59% of points on serve vs Kozlov S.

Kozlov S.serving80% hold

wins 63% of points on serve vs Duckworth J.

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
55%
59%
1st serve points won·Slight edge
75%
69%
2nd serve points won·Slight edge
53%
48%
Service points won·Even
65%
61%
Return points won·Slight edge
34%
42%
Break points saved·Clear edge
73%
56%
Aces / match·Dominant
8.8
2.8
Double faults / match·Even
3.8
3.9

Averages over each player's completed matches in the selected window (25 vs 31). ATP, WTA & Challenger.

Clutch

Under pressure
Clutch Rating·Clear edge
54
36
Break points saved·Dominant
97
49
Break points won·Clear edge
4
20
Deciding sets·Slight edge
77
85
Tiebreaks·Dominant
72
30

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

Umpiry Score

Pre-match
7.4
Dominant favouriteUmpiry Score
5.2
Clear underdogUmpiry Score
Form & Matchup
7.3+175 Clay Elo edge
Surface ELO
2.7Clay Elo 1397
7.8Overall Elo 1628
ELO gap
2.2Overall Elo 1429
5.0No prior meetings
H2H
5.0
7.5
Surface form
5.2
Win streak
0.0Lost last 4
Fatigue & Travel
2.5
Minutes 14d
7.9
0.0
3-set count
Context
6.0
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·Slight edge
80
75

Duckworth J.: 7 days rest · 1 match, 42 games (7d) · Kozlov S.: 2 days rest · 2 matches, 52 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast