Lukas Klein and Milos Karol will clash against each other in the 2nd round of the Istanbul Challenger for the 2nd time in their career. They are scheduled to compete on Wednesday at 10:30 am on CENTER COURT. In this post, we analyze their head to head performance and prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Lukas Klein who should win in 2 sets.

As per the initial odds, Lukas Klein is the pick to win this match.
Lukas Klein -> 1.31
Milos Karol -> 3.22

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Prediction and head to head Lukas Klein vs. Milos Karol

This will be the 2nd time that Lukas Klein and Milos Karol clash against each other. The head to head is 1-0 for Karol (see full H2H stats), but they have never played each other on hard.

The last time that they locked horns, Karol won 6-2 6-4 in the 1st round in the Bratislava 1 Challenger back in June 2025.

Lukas Klein

Lukas Klein

29 - 20win/loss

Hard
6-7
I Hard
4-4
Clay
17-8
Grass
2-1
Rank
140
High
109
LLLLLWLLWL
See allSTATS
Year Total Hard Clay I.hard Grass Carpet
2025 30-27 6-9 17-8 5-9 2-1 0-0
2024 33-24 16-10 9-7 5-5 3-2 0-0
2023 39-29 9-8 15-12 11-6 1-2 3-1
2022 44-22 5-0 27-17 8-3 3-1 1-1
2021 28-22 0-2 23-17 2-2 3-1 0-0
See all years

Ranked no. 119, the Slovakian reached the 2nd round after defeating Saba Purtseladze 6-4 6-3.

In the 1st round, Klein had a good straight sets win against Purtseladze (6-4 6-3). During the match, Klein scored 63 points vs Purtseladze’s 51. Lukas was pretty aggressive to blast 30 winners.

Regarding the service games, Klein blasted 7 aces and he committed only 2 double faults. Lukas Klein was exceptionally efficient on serve to win 81% (30/37) of his 1st serve and 54% (7/13) on the second serve. This was the main reason for not conceding a single break during the match. Klein broke Purtseladze 3 times after converting 60% of his break points (3/5).

Klein has a solid match record in the last 10 years having won 62% of his matches (349-215). 6-7 on hard in 2025. Regarding his performance on the same surface of this event, Klein has a compiled 104-53 win-loss record in the last years on hard.

His best result of the year was winning the title the San Marino Challenger where he beat Dino Prizmic in the final 6-3 6-4 and the Zug Challenger where he beat Harold Mayot in the final 6-2 6-7(4) 6-4.

The Slovakian has an aggregate 29-20 win-loss record in 2025, 6-7 on hard (See FULL STATS)

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Previously in the Istanbul Challenger

Istanbul Challenger
Klein's Record

Milos Karol

Milos Karol

25 - 21win/loss

Hard
3-3
I Hard
2-4
Clay
20-14
Rank
449
High
356
WWWLLWLWWL
See allSTATS
Year Total Hard Clay I.hard Grass Carpet
2025 35-28 4-4 20-14 11-10 0-0 0-0
2024 53-31 8-5 21-17 24-8 0-0 0-1
2023 28-27 3-2 11-13 13-11 0-0 1-1
2022 6-24 3-5 1-15 2-4 0-0 0-0
2021 22-18 0-0 10-11 10-6 0-0 2-1
See all years

Ranked no. 357 (career-high), Karol reached the 2nd round after beating Michal Krajci 6-3 6-2.

In the 1st round, Milos had a good straight sets win against Krajci (6-3 6-2). During the match Karol scored 67 points vs Krajci’s 49. The Slovakian was extremely aggressive to blast 29 winners.

Talking about serving, Karol blasted 16 aces and he committed only 3 double faults. Milos Karol conceded no breaks for the entire match to save 2 break points. Furthermore, Karol put 59% of his first serves in, winning 91% (29/32) of the points behind his 1st serve and 50% (11/22) on the 2nd serve. The Slovakian broke Krajci 3 times after converting 38% of his break points (3/8).

Karol’s best result of the current season was getting to the semifinal in M15 Warmbad Villach.

The Slovakian has a composed 25-21 win-loss record in 2025, 3-3 on hard (See FULL STATS).

Istanbul Challenger
Karol's Record

H2H Performance in the tournament

L.Klein
M.Karol
1h:15
1h:15
Time on court​
1h:17
1h:17
1h:15
1h:15
Last match​
1h:17
1h:17
1
1
Match played
1
1
19
19
Games Played​
17
17
2
2
Set played​​
2
2
63
63
Total points​
67
67
63
63
Avg point​
67
67
30
30
Winners
29
29
30
30
Avg Winners​
29
29
48%
48%
Ratio winners
43%
43%
-- Serve --
7
7
Aces
16
16
7
7
Avg Aces
!
16
16
2
2
Double Faults
3
3
2
2
Avg Double Faults
3
3
30/37
30/37
1st won total​
29/32
29/32
!
81%
81%
1st won %
!
91%
91%
7/13
7/13
2nd won total​
11/22
11/22
54%
54%
2nd won %
50%
50%
-- Break Points --
3/5
3/5
BP won
3/8
3/8
3/5
3/5
Avg BP won
3/8
3/8
!
60%
60%
Won
38%
38%
3
3
Conceded
2
2
3
3
Avg Conceded
2
2
0
0
Broken
0
0
!
0
0
Avg Broken
!
0
0
3
3
Saved
2
2
See Allstats

Matches, sets, games and points

Points Klein Karol
Match played 1 1
Tot Set 2 2
Tot Games 19 17
Pts 63-51 67-49
Total Points 114 116
Winners 30 29
%Winners 48% 43%

Both Klein and Karol played 1 match. Both players have not lost a single set in this event so far. Talking about their workload, Klein and Karol have played the same amount of sets 2. However, Klein played 2 games more than Karol. The Slovakian scored 30 winners (48% of the total points). On the other side, Milos recorded 29 winners (43%).

Serve Performance

Serve Klein Karol
Aces 7 16
Avg per match 7 16
1st in 37/50 32/54
%1st in 74% 59%
1st pts 30/37 29/32
%1st pts 81% 91%
2nd pts 7/13 11/22
%2nd pts 54% 50%

Klein scored 7 aces . Karol recorded 16 aces . Klein won 81% points on his first serve. He pretty solid on his second serve to win 54% of the points. On the other side, Karol won 91% of the points on his first serve. He had a solid display on his second serve to win 50% of the points.

How they played the important points

Breaks Klein Karol
Won 3 3
Converted 3/5 3/8
% Converted 60% 38%
Conceded 3 2
Saved 3 2
% Saved 100% 100%
Times Broken 0 0

Lukas broke his opponent 3 times with a 60% conversion rate. Lukas extremely effective on his serve as he has never surrendered a single service game after saving 3 break points. Milos broke his opponent 3 times with a 38% conversion rate. The Slovakian was rock solid on his serve as he has never conceded a single service game after saving 2 break points.

Klein
R1
Purtseladze		 Total
Score 6-4 6-3
Tot Set 2 2
Tot Games 19 19
pts 63-51 63-51
Total points 114 114
Winners 30 30
%Winners 48% 48%
SERVE
Aces 7 7
Double Faults 2 2
1st in 37/50 37/50
% 1st in 74% 74%
1st pts 30/37 30/37
% 1st pts 81% 81%
2nd pts 7/13 7/13
% 2nd pts 54% 54%
Breaks
Won 3 3
Converted 3/5 3/5
Converted % 60% 60%
Conceded 3 3
Saved 3/3 3
Saved % 100% 100%
Times Broken 0 0
Karol
R1
Krajci		 Total
Score 6-3 6-2
Tot Set 2 2
Tot Games 17 17
pts 67-49 67-49
Total points 116 116
Winners 29 29
%Winners 43% 43%
SERVE
Aces 16 16
Double Faults 3 3
1st in 32/54 32/54
% 1st in 59% 59%
1st pts 29/32 29/32
% 1st pts 91% 91%
2nd pts 11/22 11/22
% 2nd pts 50% 50%
Breaks
Won 3 3
Converted 3/8 3/8
Converted % 38% 38%
Conceded 2 2
Saved 2/2 2
Saved % 100% 100%
Times Broken 0 0

Tennis Scores in Istanbul Challenger

Upcoming matches in the draw

Klein
More Stats
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Karol

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