Zdenek Kolar vs Zhizhen Zhang — Koblenz CH Round of 16

Koblenz CH · CHALLENGER · Round of 16
Zdenek Kolar
CZE
Zdenek Kolar
#153ATP
1506ELO
1432Hard ELO
$121kYTD
$1.3MCAREER
29 yrs · 183 cm · Right-handed
Last 10 · pre-match
LLWLLWWLLL
2 — 1
Sets
Monday, 30 January 2023
hard
Zhizhen Zhang
CHN1
Zhizhen Zhang
#156ATP
1682ELO
1642Hard ELO
$546kYTD
$4.6MCAREER
29 yrs · 193 cm · Right-handed
Last 10 · pre-match
LLLWWWWWLW
Kolar Z.
3-6 6-3 6-3
Zhang Z.
Kolar Z.
3662
Zhang Z.
6331

Zdenek Kolar defeated Zhizhen Zhang 3-6 6-3 6-3 in the Koblenz CH round of 16 on hard.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Kolar Z.serving83% hold

wins 65% of points on serve vs Zhang Z.

Zhang Z.serving80% hold

wins 63% of points on serve vs Kolar Z.

Even serve battle

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

Serve & return on hard

Kolar Z.Zhang Z.
—
Serve
24
—
Return
0

Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About

Statistics

This season
Kolar Z.Zhang Z.
1st serve in·Even
64%
63%
1st serve points won·Slight edge
66%
73%
2nd serve points won·Even
49%
51%
Service points won·Slight edge
60%
65%
Return points won·Slight edge
41%
34%
Break points saved·Even
58%
59%
Aces / match·Dominant
2.1
7.1
Double faults / match·Clear edge
3.0
2.2

Averages over each player's completed matches in the selected window (194 vs 153). ATP, WTA & Challenger.

Clutch

Under pressure
Kolar Z.Zhang Z.
Clutch Rating·Dominant
26
56
Break points saved·Dominant
53
94
Break points won·Clear edge
28
14
Deciding sets·Dominant
58
91
Tiebreaks·Dominant
8
39

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

Umpiry Score

Pre-match
Kolar Z.
5.2
Clear underdogUmpiry Score
Zhang Z.
6.4
Marginal edgeUmpiry Score
Form & Matchup
2.2Hard Elo 1432
Surface ELO
7.8+210 Hard Elo edge
2.6Overall Elo 1506
ELO gap
7.4Overall Elo 1682
5.0No prior meetings
H2H
5.0
4.5
Surface form
3.9
Win streak
0.0Lost last 4
Fatigue & Travel
5.9
Minutes 14d
7.9
0.0
3-set count
7.0
7.0
Prev. match
2.0
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
Kolar Z.Zhang Z.
Freshness·Even
90
86

Kolar Z.: 5 days rest · 1 match, 19 games (7d) · Zhang Z.: 1 day rest · 1 match, 21 games (7d). Higher means fresher. About

Conditions

Court speed
Fastbig serves, short points
SlowFast
Final
Safiullin R.[2]
Pospisil V.[3]
6-27-5
Semi-finals
Safiullin R.[2]
Collignon R.
5-76-36-0
Pospisil V.[3]
Kolar Z.
6-16-3
Quarter-finals
Collignon R.
Marterer M.[4]
5-2
Safiullin R.[2]
Vatutin A.
6-31-66-2
Pospisil V.[3]
Wessels L.
6-46-2
Kolar Z.
Muller A.[7]
7-654-67-63
R16
Pospisil V.[3]
Rosenkranz M.
7-667-62
Vatutin A.
Broady L.[6]
6-26-3
Marterer M.[4]
Andreev A.
6-36-3
Collignon R.
Laaksonen H.
7-56-4
Wessels L.
Grenier H.[5]
6-46-3
Muller A.[7]
Choinski J.
6-36-747-5
Kolar Z.
Zhang Z.[1]
3-66-36-3
Safiullin R.[2]
Escoffier A.
6-34-67-62
R32
Andreev A.
Masur D.
7-56-3
Marterer M.[4]
Sachko V.
7-56-2
Pospisil V.[3]
Nava E.
7-56-2
Escoffier A.
Topo M.
6-46-757-66
Broady L.[6]
Haase R.
7-626-1
Laaksonen H.
Nardi L.
7-696-3
Grenier H.[5]
Gerch L.
6-26-2
Wessels L.
Hoang A.
7-663-66-2
Rosenkranz M.
Lokoli L.
4-66-46-3
Muller A.[7]
Rehberg M.
6-46-4
Choinski J.
Yevseyev D.
6-41-66-2
Kolar Z.
Bellier A.
6-26-4
Zhang Z.[1]
Squire H.
6-15-76-4
Vatutin A.
Haerteis J.
7-666-1
Safiullin R.[2]
Blancaneaux G.
5-76-36-1
Collignon R.
Brouwer G.[8]
5-77-626-3