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H2H, prediction of Jan-Lennard Struff vs Gauthier Onclin in Brussels with odds, preview, pick | 21st October 2026

PREVIEW. Brussels. Struff and Onclin will play each other in the 2nd round of the European Open. See the prediction, H2H stats, odds, and preview of their upcoming match on Wednesday the 21st of October

Mark Hall

20 October 2026

Prediction and head to head Jan-Lennard Struff vs. Gauthier Onclin

Jan-Lennard Struff and Gauthier Onclin will clash against each other in the 2^nd round of the European Open for the 1^st time in their career. They are scheduled to compete on Wednesday at 8:30 pm on Centre Court. In this post, we analyze their head to head performance and prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Jan-Lennard Struff who should win in 2 sets.

As per the initial odds, Jan-Lennard Struff is the pick to win this match.
Jan-Lennard Struff -> 1.23
Gauthier Onclin -> 4.1

Here where top tennis events are broadcasted or streamed online (ATP, WTA).

At the challenger level, there will be free live streaming on Challenger TV.

Prediction and head to head Jan-Lennard Struff vs. Gauthier Onclin

There is no head to head record between Jan-Lennard Struff and Gauthier Onclin since this will be the first time that they will fight against each other in the main tour.

Jan-Lennard Struff

21 - 24win/loss

Hard

8-13

I Hard

3-1

Clay

4-7

Grass

6-3

Rank
58

High
21

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Year	Total	Hard	Clay	I.hard	Grass	Carpet
2026	21-24	8-13	4-7	3-1	6-3	0-0
2025	27-30	7-11	5-8	12-8	3-3	0-0
2024	30-21	4-8	15-5	5-6	6-2	0-0
2023	45-24	21-9	14-7	5-6	5-2	0-0
2022	23-22	3-10	7-4	12-4	1-4	0-0

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Ranked no. 58, Jan-Lennard reached the 2^nd round after beating Marcos Giron 7-6(3) 7-6(3).

In the 1^st round, Jan-Lennard had a good straight sets win against Giron (7-6³ 7-6³). During the match, Struff scored 89 points vs Giron’s 71. Jan-Lennard was extremely aggressive to blast 43 winners.

Regarding the service games, Struff recorded 15 aces and he committed only 2 double faults. Overall, Jan-Lennard Struff was extremely efficient on serve to win 81% (43/53) of his 1st serve and 73% (11/15) on the second serve. However, this didn’t prevent his to concede the serve once. Struff broke Giron once after converting 11% of his break points (1/9).

Struff has favorable match record in the last 10 years having won 53% of his matches (290-256). 3-1 on indoor hard courts in 2026. Regarding his performance on the same surface of this competition, Struff has a compiled 70-59 win-loss record in the last years on indoor hard courts.

Jan-Lennard has a composed 21-24 win-loss record in 2026, 3-1 on indoor hard courts (See FULL STATS).

Previously in Brussels

Previously, his best result was reaching the quarter in 2016 and 2018. See his history.

Brussels

Struff's Record

Gauthier Onclin

49 - 25win/loss

Hard

29-10

I Hard

12-6

Clay

4-6

Grass

4-3

Rank
178

High
158

LWLLLWLLLL

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Year	Total	Hard	Clay	I.hard	Grass	Carpet
2026	49-25	29-10	4-6	12-6	4-3	0-0
2025	28-29	8-9	18-11	1-8	1-1	0-0
2024	56-27	27-11	19-13	10-3	0-0	0-0
2023	40-25	1-2	15-10	23-11	1-2	0-0
2022	54-26	10-8	36-15	8-3	0-0	0-0

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Ranked no. 178, Gauthier got to the 2^nd round after defeating Harry Wendelken 6-3 4-6 6-0 and Clement Chidekh 6-2 7-6(3).

In the qualifications, Onclin defeated Wendelken (6-3 4-6 6-0). During the match Onclin scored 101 points vs Wendelken’s 78. Gauthier was quite aggressive to blast 36 winners.

Talking about serving, Onclin struck 7 aces and he committed only 1 double fault for the entire match. Overall, Gauthier Onclin was extremely efficient on serve to win 72% (36/50) of his 1st serve and 59% (16/27) on the second serve. However, this didn’t prevent his to concede the serve twice. Gauthier broke Wendelken 6 times after converting 35% of his break points (6/17).

ATP Brussels - Gauthier Onclin's projected path

Projected draw

His best result of the season was conquering the title the Abidjan 1 Challenger where he defeated Hamish Stewart in the final 7-6(5) 7-6(2) and the Abidjan 2 Challenger where he defeated Michael Mmoh in the final 6-3 6-4.

Gauthier has an aggregate 49-25 win-loss record in 2026, 12-6 on indoor hard courts (See FULL STATS).

Previously in Brussels

Previously, his best result was reaching the qualifications in 2023. See his history.

Brussels

Onclin's Record

H2H Performance in the tournament

J.Struff

G.Onclin

1h:33

Time on court

3h:55

1h:33

Last match

1h:39

Match played

Games Played

Set played

Total points

158

Avg point

Winners

Avg Winners

48%

Ratio winners

41%

-- Serve --

Aces

Avg Aces

Double Faults

Avg Double Faults

2.5

43/53

1st won total

64/94

81%

1st won %

68%

11/15

2nd won total

30/57

73%

2nd won %

53%

-- Break Points --

1/9

BP won

7/21

1/9

Avg BP won

3.5/10.5

11%

Won

33%

Conceded

Avg Conceded

4.5

Broken

Avg Broken

2.5

Saved

See Allstats

Matches, sets, games and points

Points	Struff	Onclin
Match played	1	1
Tot Set	2	3
Tot Games	26	25
Pts	89-71	101-78
Total Points	160	179
Winners	43	36
%Winners	48%	36%

Both Struff and Onclin played 1 match. At the moment, Gauthier Onclin surrendered 1 set while Jan-Lennard Struff hasn’t lost a set so far. Struff has played 1 set(s) less than Onclin (2 vs 3). However, it’s interesting to notice that Struff played 1 game more than Onclin. The German scored 43 winners (48% of the total points). On the other side, Gauthier recorded 36 winners (36%).

Serve Performance

Serve	Struff	Onclin
Aces	15	7
Avg per match	15	7
1st in	53/68	50/77
%1st in	78%	65%
1st pts	43/53	36/50
%1st pts	81%	72%
2nd pts	11/15	16/27
%2nd pts	73%	59%

Struff fired 15 aces . Onclin managed to score 7 aces . Struff won 81% points behind his first serve. He very solid his second serve to win 73% of the points. On the other side, Onclin won 72% of the points on his first serve. He had a solid display on his second serve to win 59% of the points.

How they played the important points

Breaks	Struff	Onclin
Won	1	6
Converted	1/9	6/17
% Converted	11%	35%
Conceded	2	5
Saved	1	3
% Saved	50%	60%
Times Broken	1	2

Struff broke his opponent once with a 11% conversion rate. Struff conceded his serve once and he saved 50% of the break points that he conceded. Gauthier broke his opponent 6 times with a 35% conversion rate. Gauthier conceded his serve twice and he saved 60% of the break points that he conceded.

	R1 Giron	Total
Struff
Score	7-6³ 7-6³
Tot Set	2	2
Tot Games	26	26
pts	89-71	89-71
Total points	160	160
Winners	43	43
%Winners	48%	48%
SERVE
Aces	15	15
Double Faults	2	2
1st in	53/68	53/68
% 1st in	78%	78%
1st pts	43/53	43/53
% 1st pts	81%	81%
2nd pts	11/15	11/15
% 2nd pts	73%	73%
Breaks
Won	1	1
Converted	1/9	1/9
Converted %	11%	11%
Conceded	2	2
Saved	1/2	1
Saved %	50%	50%
Times Broken	1	1

	Q1 Wendelken	Total
Onclin
Score	6-3 4-6 6-0
Tot Set	3	3
Tot Games	25	25
pts	101-78	101-78
Total points	179	179
Winners	36	36
%Winners	36%	36%
SERVE
Aces	7	7
Double Faults	1	1
1st in	50/77	50/77
% 1st in	65%	65%
1st pts	36/50	36/50
% 1st pts	72%	72%
2nd pts	16/27	16/27
% 2nd pts	59%	59%
Breaks
Won	6	6
Converted	6/17	6/17
Converted %	35%	35%
Conceded	5	5
Saved	3/5	3
Saved %	60%	60%
Times Broken	2	2