Elias Ymer and Kokoro Isomura will square off in the 2^nd round of the Seoul Challenger for the 2^nd time in their career. They are scheduled to compete on Thursday at 11:00 am on COURT 2. In the following paragraphs, you can find the head to head analysis and prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Elias Ymer who should win in 2 sets.

As per the initial odds, Elias Ymer is the pick to win this match.
Elias Ymer -> 1.34
Kokoro Isomura -> 3.06

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Prediction and head to head Elias Ymer vs. Kokoro Isomura

This will be the 2^nd time that Elias Ymer and Kokoro Isomura play each other. The head to head is 1-0 for Isomura (see full H2H stats), 1-0 on hard.

The last time that they squared off, Isomura won 6-3 5-7 6-3 in the 2^nd round in the Matsuyama Challenger back in 2024.

Elias Ymer

Ranked no. 204, Elias got to the 2^nd round after beating Renta Tokuda 5-7 6-1 6-0

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In the 1^st round against Tokuda, The Swede recovered from a 1-set down deficit before winning (5-7 6-1 6-0). During the match, Ymer scored 82 points vs Tokuda’s 60. Ymer was exceptionally aggressive to blast 33 winners.

Regarding the service games, Ymer fired 9 aces and he committed only 6 double faults. Elias Ymer lost the serve 3 times and he saved 1 break points. Furthermore, Ymer put 61% of his first serves in, winning 75% (33/44) of the points behind his 1st serve and 50% (14/28) on the 2nd serve. Ymer broke Tokuda 7 times after converting 50% of his break points (7/14).

Ymer has winning match record in the last 10 years having won 52% of his matches (314-285). 9-5 on hard in 2025. Talking about his performance on the same surface of this competition, Ymer has an aggregate 69-82 match record in the last years on hard.

Ymer’s best result of the current season was reaching the final in the Chennai Challenger.

Elias has an aggregate 28-27 win-loss record in 2025, 9-5 on hard (See FULL STATS).

Previously in the Seoul Challenger

Kokoro Isomura

Ranked no. 515, the Japanese reached the 2^nd round after beating Dong Ju Kim 6-4 6-3, Yusuke Takahashi 6-2 6-4 and Yosuke Watanuki 5-2 ret..

In the 1^st round against Watanuki, the Japanese had a free pass after Watanuki retired on a 5-2 . scoreline.

Kokoro’s best result of the current season was getting to the final in M15 Luan.

The Japanese has an overall 34-26 win-loss record in 2025, 32-25 on hard (See FULL STATS)

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Previously in the Seoul Challenger

Previously, his best result was reaching the qualifications in 2024. See his history.

H2H Performance in the tournament

Matches, sets, games and points

Points	Ymer	Isomura
Match played	1	3
Tot Set	3	6
Tot Games	25	44
Pts	82-60	155-114
Total Points	142	269
Winners	33	62
%Winners	40%	40%

Ymer played 1 match while Isomura competed in 3 matches. Isomura started his run from the qualifications while Ymer had a direct access to the main draw. At the moment, Elias Ymer lost 1 set while Kokoro Isomura hasn’t surrendered a set so far. Ymer has played 3 set(s) less than Isomura (3 vs 6). Therefore, Ymer played 19 games less than Isomura. The Swede scored 33 winners (40% of the total points). On the other side, Kokoro made 62 winners (40%).

Serve Performance

Serve	Ymer	Isomura
Aces	9	1
Avg per match	9	0.3
1st in	44/72	84/129
%1st in	61%	65%
1st pts	33/44	62/84
%1st pts	75%	74%
2nd pts	14/28	19/45
%2nd pts	50%	42%

Ymer managed to score 9 aces . Isomura managed to score 1 ace (0.3 per match). Ymer won 75% points on his first serve. He pretty effective on his second serve to win 50% of the points. On the other side, Isomura won 74% of the points behind his first serve. He had a solid display on his second serve to win 42% of the points.

How they played the important points

Breaks	Ymer	Isomura
Won	7	12
Converted	7/14	12/18
% Converted	50%	67%
Conceded	4	9
Saved	1	4
% Saved	25%	44%
Times Broken	3	5

Elias broke his opponent 7 times with a 50% conversion rate. The Swede dropped his serve 3 times and he saved 25% of the break points that he conceded. The Japanese broke his opponents 12 times with a 67% conversion rate. Isomura conceded his serve 5 times and he saved 44% of the break points that he conceded.

Ymer
	R1 Tokuda	Total
Score	5-7 6-1 6-0
Tot Set	3	3
Tot Games	25	25
pts	82-60	82-60
Total points	142	142
Winners	33	33
%Winners	40%	40%
SERVE
Aces	9	9
Double Faults	6	6
1st in	44/72	44/72
% 1st in	61%	61%
1st pts	33/44	33/44
% 1st pts	75%	75%
2nd pts	14/28	14/28
% 2nd pts	50%	50%
Breaks
Won	7	7
Converted	7/14	7/14
Converted %	50%	50%
Conceded	4	4
Saved	1/4	1
Saved %	25%	25%
Times Broken	3	3

Isomura
	Q1 Ju	Q3 Takahashi	R1 Watanuki	Total
Score	6-4 6-3	6-2 6-4	5-2 ret.
Tot Set	2	2	1	5
Tot Games	19	18	7	44
pts	66-54	62-46	27-14	155-114
Total points	120	108	41	269
Winners	24	26	12	62
%Winners	36%	42%	44%	40%
SERVE
Aces	0	1	0	1
Double Faults	5	3	1	9
1st in	36/57	35/53	13/19	84/129
% 1st in	63%	66%	68%	65%
1st pts	24/36	26/35	12/13	62/84
% 1st pts	67%	74%	92%	74%
2nd pts	8/21	7/18	4/6	19/45
% 2nd pts	38%	39%	67%	42%
Breaks
Won	6	5	1	12
Converted	6/9	5/7	1/2	12/18
Converted %	67%	71%	50%	67%
Conceded	3	6	0	9
Saved	0/3	4/6	0/0	4
Saved %	0%	67%	–	67%
Times Broken	3	2	0	5

Tennis Scores in Seoul Challenger

• Bu YunchaoketeYunchaokete – Marc-Andrea HueslerHuesler (6-1 4-6 6-1) – Stats, scores, rankings
• Kasidit SamrejSamrej – Oliver CrawfordCrawford (6-4 3-6 6-4) – Stats, scores, rankings
• Chak Lam Coleman WongLam Coleman Wong – Yu Hsiou HsuHsiou Hsu (6-4 7-6³) – Stats, scores, rankings
• Sho ShimabukuroShimabukuro – Rio NoguchiNoguchi (6-4 6-3) – Stats, scores, rankings

Upcoming matches in the draw

• Frederico Ferreira SilvaFerreira Silva – Yoshihito NishiokaNishioka (1-2) – H2H and prediction
• Taro DanielDaniel – (0-0) – H2H and prediction
• Elias YmerYmer – (0-1) – H2H and prediction
• Sho ShimabukuroShimabukuro – Kasidit SamrejSamrej (0-0) – H2H and prediction
• Jurij RodionovRodionov – Yuta ShimizuShimizu (1-0) – H2H and prediction