Jesper De Jong and Lukas Klein will face off in the semifinal of the Istanbul Challenger for the 1st time in their career. They are scheduled to compete on Saturday at 11:00 am on CENTER COURT. Here the head to head stats and relative prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Jesper De Jong who should win in 3 sets.

As per the initial odds, Jesper De Jong is the pick to win this match.
Jesper De Jong -> 1.61
Lukas Klein -> 2.25

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Prediction and head to head Jesper De Jong vs. Lukas Klein

There is no head to head record between Jesper De Jong and Lukas Klein since this will be the first time that they will play each other in the main tour.

Jesper De Jong

Jesper De Jong

0 - 0win/loss

Rank
76
High
76
LWLLLWWLWW
See allSTATS
Year Total Hard Clay I.hard Grass Carpet
2025 35-31 8-7 20-13 5-6 2-5 0-0
2024 48-25 12-5 33-15 2-4 1-1 0-0
2023 52-23 19-4 30-14 0-2 3-3 0-0
2022 24-28 12-7 10-13 2-5 0-3 0-0
2021 32-29 2-6 27-18 3-5 0-0 0-0
See all years

Ranked no. 141 (career-high), De Jong reached the semifinal after defeating Marsel Ilhan 6-2 6-73 6-2, Johannus Monday 7-5 6-1 and Giovanni Mpetshi Perricard 7-5 6-4.

In the quarter, De Jong had a good straight sets win against Mpetshi Perricard (7-5 6-4). During the match, De Jong scored 77 points vs Mpetshi Perricard’s 67. Jesper was exceptionally aggressive to blast 31 winners.

Talking about the service games, De Jong scored just 1 ace in the course of the match and he committed only 3 double faults. Overall, Jesper De Jong was very efficient on serve to win 76% (31/41) of his 1st serve and 58% (14/24) on the second serve. However, this didn’t prevent his to concede the serve once. The Dutch broke Mpetshi Perricard 3 times after converting 50% of his break points (3/6).

Overall Performance in this tournament

Jesper has surrendered 1 set in this event to win 56% of the points he played.

De Jong has a solid match record in the last 7 years having won 63% of his matches (205-119). 19-2 on hard in 2023. In connection with his performance on the same surface of this event, De Jong has an aggregate74-33 match record in the last 7 years on hard.

His best result of the season was conquering the title the Grodzisk Mazowiecki Challenger where he beat Benjamin Hassan in the final 6-3 6-3.

Jesper has a compiled 52-20 win-loss record in 2023, 19-2 on hard (See FULL STATS).

Previously in the Istanbul Challenger

Jesper has never competed in this tournament before.

Istanbul Challenger
De Jong's Record

Lukas Klein

Lukas Klein

0 - 0win/loss

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. 155, Klein reached the semifinal after beating Martin Damm 6-4 4-6 7-5, Ergi Kirkin 6-3 6-4 and Denis Yevseyev 7-65 6-73 7-62.

In the quarter, The Slovakian defeated Yevseyev (7-65 6-73 7-62). During the match Klein scored 125 points vs Yevseyev’s 123. Klein was extremely aggressive to blast 50 winners.

About the serving games, Klein scored 2 aces and he was not very steady on his 2nd serve to score 10 double faults. Lukas Klein lost the serve 5 times and he saved 4 break points. Furthermore, Klein put 64% of his first serves in, winning 64% (50/78) of the points behind his 1st serve and 52% (23/44) on the 2nd serve. Lukas broke Yevseyev 5 times after converting 71% of his break points (5/7).

Overall Performance in this tournament

The Slovakian has conceded 2 set in the tournament to win 51% of the points he played.

The Slovakian’s best result of the current season was reaching the semifinal in the Prague 1 Challenger and the Prostejov Challenger.

The Slovakian has an aggregate 24-23 win-loss record in 2023, 6-4 on hard (See FULL STATS)

.
Istanbul Challenger
Klein's Record

H2H Performance in the tournament (main draw)

J.De Jong
L.Klein
4h:52
4h:52
Time on court​
6h:14
6h:14
1h:36
1h:36
Last match​
!
2h:37
2h:37
3
3
Match played
3
3
70
70
Games Played​
90
90
7
7
Set played​​
8
8
239
239
Total points​
296
296
79.7
79.7
Avg point​
98.7
98.7
101
101
Winners
122
122
33.7
33.7
Avg Winners​
40.7
40.7
42%
42%
Ratio winners
41%
41%
-- Serve --
8
8
Aces
7
7
2.7
2.7
Avg Aces
2.3
2.3
5
5
Double Faults
17
17
1.7
1.7
Avg Double Faults
!
5.7
5.7
101/136
101/136
1st won total​
122/189
122/189
!
74%
74%
1st won %
65%
65%
40/66
40/66
2nd won total​
56/104
56/104
!
61%
61%
2nd won %
54%
54%
-- Break Points --
13/26
13/26
BP won
13/25
13/25
4.3/8.7
4.3/8.7
Avg BP won
4.3/8.3
4.3/8.3
50%
50%
Won
!
52%
52%
7
7
Conceded
29
29
2.3
2.3
Avg Conceded
9.7
9.7
4
4
Broken
10
10
1.3
1.3
Avg Broken
3.3
3.3
3
3
Saved
19
19
See Allstats

Matches, sets, games and points

Points De Jong Klein
Match played 3 3
Tot Set 7 8
Tot Games 70 90
Pts 239-186 296-282
Total Points 425 578
Winners 101 122
%Winners 42% 41%

Both De Jong and Klein played 3 matches. Both players lost a set in the event. Jesper De Jong conceded 1 set, while Lukas Klein lost 2 sets. De Jong has played 1 set(s) less than Klein (7 vs 8). Therefore, De Jong played 20 games less than Klein. Jesper scored 101 winners (42% of the total points). On the other side, Klein managed to score 122 winners (41%).

Serve Performance

Serve De Jong Klein
Aces 8 7
Avg per match 2.7 2.3
1st in 136/202 189/293
%1st in 67% 65%
1st pts 101/136 122/189
%1st pts 74% 65%
2nd pts 40/66 56/104
%2nd pts 61% 54%

De Jong bagged 8 aces (2.7 per match). Klein blasted 7 aces (2.3 per match). De Jong won 74% points on his first serve. He pretty solid on his second serve to win 61% of the points. On the other side, Klein won 65% of the points on his first serve. He had a solid display on his second serve to win 54% of the points.

How they played the important points

Breaks De Jong Klein
Won 13 13
Converted 13/26 13/25
% Converted 50% 52%
Conceded 7 29
Saved 3 19
% Saved 43% 66%
Times Broken 4 10

De Jong broke his opponents 13 times with a 50% conversion rate. The Dutch dropped his serve 4 times and he saved 43% of the break points that he conceded. Lukas broke his opponents 13 times with a 52% conversion rate. Klein conceded his serve 10 times and he saved 66% of the break points that he conceded.

De Jong
R1
Ilhan		 R2
Monday 		1/4
Mpetshi Perricard		 Total
Score 6-2 6-73 6-2 7-5 6-1 7-5 6-4
Tot Set 3 2 2 7
Tot Games 29 19 22 70
pts 97-77 65-42 77-67 239-186
Total points 174 107 144 425
Winners 39 31 31 101
%Winners 40% 48% 40% 42%
SERVE
Aces 4 3 1 8
Double Faults 2 0 3 5
1st in 56/84 39/53 41/65 136/202
% 1st in 67% 74% 63% 67%
1st pts 39/56 31/39 31/41 101/136
% 1st pts 70% 79% 76% 74%
2nd pts 18/28 8/14 14/24 40/66
% 2nd pts 64% 57% 58% 61%
Breaks
Won 6 4 3 13
Converted 6/10 4/10 3/6 13/26
Converted % 60% 40% 50% 50%
Conceded 5 1 1 7
Saved 3/5 0/1 0/1 3
Saved % 60% 0% 0% 20%
Times Broken 2 1 1 4
Klein
R1
Damm		 R2
Kirkin		 1/4
Yevseyev		 Total
Score 6-4 4-6 7-5 6-3 6-4 7-65 6-73 7-62
Tot Set 3 2 3 8
Tot Games 32 19 39 90
pts 110-110 61-49 125-123 296-282
Total points 220 110 248 578
Winners 46 26 50 122
%Winners 42% 43% 40% 41%
SERVE
Aces 3 2 2 7
Double Faults 7 0 10 17
1st in 75/114 36/57 78/122 189/293
% 1st in 66% 63% 64% 65%
1st pts 46/75 26/36 50/78 122/189
% 1st pts 61% 72% 64% 65%
2nd pts 20/39 13/21 23/44 56/104
% 2nd pts 51% 62% 52% 54%
Breaks
Won 5 3 5 13
Converted 5/11 3/7 5/7 13/25
Converted % 45% 43% 71% 52%
Conceded 18 2 9 29
Saved 14/18 1/2 4/9 19
Saved % 78% 50% 44% 57%
Times Broken 4 1 5 10

Tennis Scores in Istanbul Challenger

Upcoming matches in the draw

De Jong
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Klein

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