Zhizhen Zhang and Zdenek Kolar will play each other in the 2^nd round of the Koblenz Challenger for the 1^st time in their career. They are scheduled to play on Wednesday at 3:30 pm on CENTER COURT. In the following lines you can find the head to head analysis and prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Zhizhen Zhang who should win in 2 sets.

As per the initial odds, Zhizhen Zhang is the pick to win this match.
Zhizhen Zhang -> 1.28
Zdenek Kolar -> 3.42

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Prediction and head to head Zhizhen Zhang vs. Zdenek Kolar

There is no head to head record between Zhizhen Zhang and Zdenek Kolar since this will be the first time that they will play each other in the main tour.

Zhizhen Zhang

Ranked no. 92 (career-high), Zhang reached the 2^nd round after beating Henri Squire 6-1 5-7 6-4.

In the 1^st round, The Chinese defeated Squire (6-1 5-7 6-4). During the match, Zhang scored 91 points vs Squire’s 74. Zhang was extremely aggressive to blast 45 winners.

Talking about the service games, Zhang blasted 8 aces and he committed only 1 double fault. Overall, Zhizhen Zhang was very efficient on serve to win 78% (45/58) of his 1st serve and 52% (11/21) on the second serve. However, this didn’t prevent his to concede the serve twice. The Chinese broke Squire 4 times after converting 44% of his break points (4/9).

Zhang has positive match record in the last 10 years having won 57% of his matches (233-176). 1-0 on indoor hard courts in 2023. Regarding his performance on the same surface of this competition, Zhang has a compiled 10-13 match record in the last years on indoor hard courts.

Zhang has a compiled 1-2 win-loss record in 2023, 1-0 on indoor hard courts (See FULL STATS).

Previously in the Koblenz Challenger

Zhang has never competed in this tournament before.

Zdenek Kolar

Ranked no. 254, Zdenek got to the 2^nd round after defeating Antoine Bellier 6-2 6-4.

In the 1^st round, Zdenek had a good straight sets win against Bellier (6-2 6-4). During the match Kolar scored 62 points vs Bellier’s 45. Zdenek was extremely aggressive to blast 24 winners.

About the serving games, Kolar bagged 3 aces and he committed only 2 double faults. Overall, Zdenek Kolar was pretty effective on serve to win 73% (24/33) of his 1st serve and 61% (14/23) on the second serve. However, this didn’t prevent his to concede the serve once. Zdenek broke Bellier 4 times after converting 57% of his break points (4/7).

The Czech has an overall 4-3 win-loss record in 2023, 1-0 on indoor hard courts (See FULL STATS).

H2H Performance in the tournament

Matches, sets, games and points

Points	Zhang	Kolar
Match played	1	1
Tot Set	3	2
Tot Games	29	18
Pts	91-74	62-45
Total Points	165	107
Winners	45	24
%Winners	49%	39%

Both Zhang and Kolar played 1 match. At the moment, Zhizhen Zhang conceded 1 set while Zdenek Kolar hasn’t lost a set so far. Zhang has played 1 set more than Kolar (3 vs 2). Therefore, Zhang played 11 games more than Kolar. Zhizhen scored 45 winners (49% of the total points). On the other side, Kolar fired 24 winners (39%).

Serve Performance

Serve	Zhang	Kolar
Aces	8	3
Avg per match	8	3
1st in	58/79	33/56
%1st in	73%	59%
1st pts	45/58	24/33
%1st pts	78%	73%
2nd pts	11/21	14/23
%2nd pts	52%	61%

Zhang blasted 8 aces . Kolar blasted 3 aces . Zhang won 78% points on his first serve. He pretty effective on his second serve to win 52% of the points. On the other side, Kolar won 73% of the points behind his first serve. He had a solid display on his second serve to win 61% of the points.

How they played the important points

Breaks	Zhang	Kolar
Won	4	4
Converted	4/9	4/7
% Converted	44%	57%
Conceded	3	3
Saved	1	2
% Saved	33%	67%
Times Broken	2	1

Zhizhen broke his opponent 4 times with a 44% conversion rate. Zhang conceded his serve twice and he saved 33% of the break points that he conceded. Kolar broke his opponent 4 times with a 57% conversion rate. Zdenek conceded his serve once and he saved 67% of the break points that he conceded.

Zhang
	R1 Squire	Total
Score	6-1 5-7 6-4
Tot Set	3	3
Tot Games	29	29
pts	91-74	91-74
Total points	165	165
Winners	45	45
%Winners	49%	49%
SERVE
Aces	8	8
Double Faults	1	1
1st in	58/79	58/79
% 1st in	73%	73%
1st pts	45/58	45/58
% 1st pts	78%	78%
2nd pts	11/21	11/21
% 2nd pts	52%	52%
Breaks
Won	4	4
Converted	4/9	4/9
Converted %	44%	44%
Conceded	3	3
Saved	1/3	1
Saved %	33%	33%
Times Broken	2	2

Kolar
	R1 Bellier	Total
Score	6-2 6-4
Tot Set	2	2
Tot Games	18	18
pts	62-45	62-45
Total points	107	107
Winners	24	24
%Winners	39%	39%
SERVE
Aces	3	3
Double Faults	2	2
1st in	33/56	33/56
% 1st in	59%	59%
1st pts	24/33	24/33
% 1st pts	73%	73%
2nd pts	14/23	14/23
% 2nd pts	61%	61%
Breaks
Won	4	4
Converted	4/7	4/7
Converted %	57%	57%
Conceded	3	3
Saved	2/3	2
Saved %	67%	67%
Times Broken	1	1

Tennis Scores in Koblenz Challenger

• Alexey VatutinVatutin – Johannes HaerteisHaerteis (7-6⁶ 6-1) – See score progression
• Roman SafiullinSafiullin – Geoffrey BlancaneauxBlancaneaux (5-7 6-3 6-1) – See score progression
• Antoine EscoffierEscoffier – Marko TopoTopo (6-4 6-7⁵ 7-6⁶) – See score progression
• Mats RosenkranzRosenkranz – Laurent LokoliLokoli (4-6 6-4 6-3) – See score progression
• Louis WesselsWessels – Antoine HoangHoang (7-6⁶ 3-6 6-2) – See score progression
• Vasek PospisilPospisil – Emilio NavaNava (7-5 6-2) – See score progression
• Jan ChoinskiChoinski – Denis YevseyevYevseyev (6-4 1-6 6-2) – See score progression
• Henri LaaksonenLaaksonen – Luca NardiNardi (7-6⁹ 6-3) – See score progression
• Hugo GrenierGrenier – Lucas GerchGerch (6-2 6-2) – See score progression
• Zhizhen ZhangZhang – Henri SquireSquire (6-1 5-7 6-4) – See score progression
• Liam BroadyBroady – Robin HaaseHaase (7-6² 6-1) – See score progression
• Raphael CollignonCollignon – Gijs BrouwerBrouwer (5-7 7-6² 6-3) – See score progression
• Zdenek KolarKolar – Antoine BellierBellier (6-2 6-4) – See score progression
• Alexandre MullerMuller – Max Hans RehbergHans Rehberg (6-4 6-4) – See score progression
• Jan ChoinskiChoinski – Denis YevseyevYevseyev (6-4 1-6 6-2) – See score progression
• Vasek PospisilPospisil – Emilio NavaNava (7-5 6-2) – See score progression
• Mats RosenkranzRosenkranz – Laurent LokoliLokoli (4-6 6-4 6-3) – See score progression
• Louis WesselsWessels – Antoine HoangHoang (7-6(6) 3-6 6-2) – See score progression
• Henri LaaksonenLaaksonen – Luca NardiNardi (7-6(9) 6-3) – See score progression
• Alexey VatutinVatutin – Johannes HaerteisHaerteis (7-6(6) 6-1) – See score progression
• Antoine EscoffierEscoffier – Marko TopoTopo (6-4 6-7(5) 7-6(6)) – See score progression
• Roman SafiullinSafiullin – Geoffrey BlancaneauxBlancaneaux (5-7 6-3 6-1) – See score progression

Upcoming matches in the draw

• Vasek PospisilPospisil – Mats RosenkranzRosenkranz (0-0) – H2H and prediction
• Antoine EscoffierEscoffier – Roman SafiullinSafiullin (0-1) – H2H and prediction
• Liam BroadyBroady – Alexey VatutinVatutin (0-0) – H2H and prediction
• Daniel MasurMasur – Adrian AndreevAndreev (0-1) – H2H and prediction
• Zhizhen ZhangZhang – Zdenek KolarKolar (0-0) – H2H and prediction
• Jan ChoinskiChoinski – Alexandre MullerMuller (1-0) – H2H and prediction
• Vitaliy SachkoSachko – Maximilian MartererMarterer (1-0) – H2H and prediction
• Louis WesselsWessels – Hugo GrenierGrenier (0-0) – H2H and prediction