Seong Chan Hong and Yasutaka Uchiyama will square off in the semifinal of the Zhangjiagang Challenger for the 5^th time in their career. They are scheduled to compete on Saturday at 11:00 am on CENTRE 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 Seong Chan Hong who should win in 3 sets.

As per the initial odds, Seong Chan Hong is the pick to win this match.
Seong Chan Hong -> 1.68
Yasutaka Uchiyama -> 2.1

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Prediction and head to head Seong Chan Hong vs. Yasutaka Uchiyama

This will be the 5^th time that Seong Chan Hong and Yasutaka Uchiyama clash against each other. The head to head is 3-1 for Uchiyama (see full H2H stats), 3-1 on hard.

The last time that they played, Uchiyama won 7-6(4) 6-3 in the final in the Busan Challenger back in April 2024.

Seong Chan Hong

Ranked no. 152 (career-high), Chan Hong got to the semifinal after beating Evgeny Donskoy 4-6 7-6(1) 6-2, Yan Bai 6-2 6-1 and Fajing Sun 5-7 6-2 6-2.

In the quarter against Sun, Chan Hong recovered from a 1-set down deficit before winning (5-7 6-2 6-2). During the match, Chan Hong scored 104 points vs Sun’s 86. Seong was pretty aggressive to blast 34 winners.

Talking about the service games, Chan Hong struck 10 aces and he committed only 5 double faults. Seong Chan Hong lost the serve twice and he saved 8 break points. Furthermore, Chan Hong put 51% of his first serves in, winning 65% (34/52) of the points behind his 1st serve and 63% (31/49) on the 2nd serve. Chan Hong broke Sun 5 times after converting 45% of his break points (5/11).

Overall Performance in this tournament

The Korean has surrendered 2 set in this competition to conquer 56% of the points he played.

Chan Hong has a solid match record in the last 10 years having won 63% of his matches (257-152). 39-19 on hard in 2024. In connection with his performance on the same surface of this event, Chan Hong has an aggregate 226-112 win-loss record in the last years on hard.

Chan Hong’s best result of the season was getting to the final in the Nonthaburi 3 Challenger,the Bengaluru Challenger and the Busan Challenger.

Chan Hong has an overall 39-24 win-loss record in 2024, 39-19 on hard (See FULL STATS).

Previously in the Zhangjiagang Challenger

Seong has never competed in this tournament before.

Yasutaka Uchiyama

Ranked no. 197, Uchiyama got to the semifinal after defeating Yuta Shimizu 6-2 1-0 ret., Vadym Ursu 6-2 6-1 and Tung-Lin Wu 6-7(5) 6-3 6-4.

In the quarter against Wu, The Japanese recovered from a 1-set down deficit before winning (6-7⁵ 6-3 6-4). During the match Uchiyama scored 104 points vs Wu’s 87. The Japanese was exceptionally aggressive to blast 45 winners.

About the serving games, Uchiyama scored 8 aces and he committed only 2 double faults. Overall, Yasutaka Uchiyama was quite effective on serve to win 79% (45/57) of his 1st serve and 63% (22/35) on the second serve. However, this didn’t prevent his to concede the serve once. Yasutaka broke Wu 3 times after converting 27% of his break points (3/11).

Overall Performance in this tournament

Uchiyama has conceded 1 set in the tournament to win 57% of the points he played.

His best result of the year was winning the title the Busan Challenger where he overcame Seong Chan Hong in the final 7-6(4) 6-3.

Uchiyama has an aggregate 23-15 win-loss record in 2024, 19-11 on hard (See FULL STATS).

Previously in the Zhangjiagang Challenger

Previously, he won this tournament once in 2018. See his history.

H2H Performance in the tournament (main draw)

Matches, sets, games and points

Points	Chan Hong	Uchiyama
Match played	3	3
Tot Set	8	8
Tot Games	74	56
Pts	267-212	165-125
Total Points	479	290
Winners	92	72
%Winners	34%	44%

Both Chan Hong and Uchiyama played 3 matches. Both players lost a set in the event. Seong Chan Hong lost 2 sets, while Yasutaka Uchiyama dropped 1 set. Talking about their workload, Chan Hong and Uchiyama have played the same amount of sets 8. However, Chan Hong played 18 games more than Uchiyama. Seong scored 92 winners (34% of the total points). On the other side, The Japanese struck 72 winners (44%).

Serve Performance

Serve	Chan Hong	Uchiyama
Aces	18	16
Avg per match	6	5.3
1st in	135/255	89/147
%1st in	53%	61%
1st pts	92/135	72/89
%1st pts	68%	81%
2nd pts	75/120	33/58
%2nd pts	63%	57%

Chan Hong made 18 aces (6 per match). Uchiyama bagged 16 aces (5.3 per match). Chan Hong won 68% points on his first serve. He pretty solid on his second serve to win 63% of the points. On the other side, Uchiyama won 81% of the points on his first serve. He had a solid display on his second serve to win 57% of the points.

How they played the important points

Breaks	Chan Hong	Uchiyama
Won	13	7
Converted	13/24	7/16
% Converted	54%	44%
Conceded	23	7
Saved	18	6
% Saved	78%	86%
Times Broken	5	1

The Korean broke his opponents 13 times with a 54% conversion rate. Seong dropped his serve 5 times and he saved 78% of the break points that he conceded. The Japanese broke his opponents 7 times with a 44% conversion rate. Uchiyama conceded his serve once and he saved 86% of the break points that he conceded.

Chan Hong
	R1 Donskoy	R2 Bai	1/4 Sun	Total
Score	4-6 7-61 6-2	6-2 6-1	5-7 6-2 6-2
Tot Set	3	2	3	8
Tot Games	31	15	28	74
pts	109-98	54-28	104-86	267-212
Total points	207	82	190	479
Winners	41	17	34	92
%Winners	38%	31%	33%	34%
SERVE
Aces	6	2	10	18
Double Faults	7	3	5	15
1st in	62/111	21/43	52/101	135/255
% 1st in	56%	49%	51%	53%
1st pts	41/62	17/21	34/52	92/135
% 1st pts	66%	81%	65%	68%
2nd pts	28/49	16/22	31/49	75/120
% 2nd pts	57%	73%	63%	63%
Breaks
Won	4	4	5	13
Converted	4/7	4/6	5/11	13/24
Converted %	57%	67%	45%	54%
Conceded	10	3	10	23
Saved	7/10	3/3	8/10	18
Saved %	70%	100%	80%	83%
Times Broken	3	0	2	5

Uchiyama
	R1 Shimizu	R2 Ursu	1/4 Wu	Total
Score	6-2 1-0 ret.	6-2 6-1	6-75 6-3 6-4
Tot Set	2	2	3	7
Tot Games	9	15	32	56
pts	–	61-38	104-87	165-125
Total points	0	99	191	290
Winners		27	45	72
%Winners	0%	44%	43%	44%
SERVE
Aces	0	8	8	16
Double Faults		3	2	5
1st in	/	32/55	57/92	89/147
% 1st in	0%	58%	62%	61%
1st pts	/	27/32	45/57	72/89
% 1st pts	0%	84%	79%	81%
2nd pts	/	11/23	22/35	33/58
% 2nd pts	0%	48%	63%	57%
Breaks
Won		4	3	7
Converted	/	4/5	3/11	7/16
Converted %	0%	80%	27%	44%
Conceded		3	4	7
Saved	0/	3/3	3/4	6
Saved %	–	100%	75%	58%
Times Broken		0	1	1

Tennis Scores in Zhangjiagang Challenger

• Mark LajalLajal – Rio NoguchiNoguchi (6-4 6-2) – See score progression
• Yasutaka UchiyamaUchiyama – Tung-Lin WuWu (6-7⁵ 6-3 6-4) – See score progression
• Seong Chan HongChan Hong – Fajing SunSun (5-7 6-2 6-2) – See score progression
• Norbert GombosGombos – Dalibor SvrcinaSvrcina (w/o) – See score progression
• Kaichi Uchida/Takeru YuzukiUchida/Takeru Yuzuki – Toshihide Matsui/Kaito UesugiMatsui/Kaito Uesugi (7-5 6-7³ 11-9) – See score progression
• Francis Casey Alcantara/Pruchya IsarowCasey Alcantara/Pruchya Isarow – Ajeet Rai/Finn ReynoldsRai/Finn Reynolds (6-3 6-7⁷ 10-6) – See score progression

Upcoming matches in the draw

• Yasutaka UchiyamaUchiyama – Seong Chan HongChan Hong (3-1) – H2H and prediction
• Norbert GombosGombos – (0-0) – H2H and prediction