Sho Shimabukuro 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 3:30 pm on CENTRE COURT. 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 Sho Shimabukuro who should win in 3 sets.

As per the initial odds, Sho Shimabukuro is the pick to win this match.
Sho Shimabukuro -> 1.56
Yasutaka Uchiyama -> 2.3

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Prediction and head to head Sho Shimabukuro vs. Yasutaka Uchiyama

This will be the 5^th time that Sho Shimabukuro and Yasutaka Uchiyama square off. The head to head is 2-2 (see full H2H stats), 2-1 on hard.

The last time that they fought against each other, Uchiyama won 5-7 6-4 7-6(4) in the quarter in the Granby Challenger back in 2024.

Sho Shimabukuro

Ranked no. 198, Sho reached the semifinal after beating James Watt 6-4 3-6 6-2, Filip Peliwo 6-3 6-4 and Ilia Simakin 6-4 6-3.

In the quarter, Shimabukuro had a good straight sets win against Simakin (6-4 6-3). During the match, Shimabukuro scored 62 points vs Simakin’s 48. The Japanese was exceptionally aggressive to blast 28 winners.

Talking about the service games, Shimabukuro bagged 7 aces and he committed only 3 double faults. Overall, Sho Shimabukuro was very effective on serve to win 74% (28/38) of his 1st serve and 62% (13/21) on the second serve. However, this didn’t prevent his to concede the serve once. Shimabukuro broke Simakin 3 times after converting 50% of his break points (3/6).

Overall Performance in this tournament

Shimabukuro has lost 1 set in this event to conquer 56% of the points he played.

Shimabukuro has a solid win-loss record in the last 10 years having won 61% of his matches (256-163). 12-14 on hard in 2025. Talking about his performance on the same surface of this tournament, Shimabukuro has a compiled 190-117 match record in the last years on hard.

Sho’s best result of the current season was getting to the semifinal in the Winnipeg Challenger.

Sho has a compiled 15-17 win-loss record in 2025, 12-14 on hard (See FULL STATS).

Previously in the Zhangjiagang Challenger

Shimabukuro has never competed in this tournament before.

Yasutaka Uchiyama

Ranked no. 225, Yasutaka got to the semifinal after defeating Yuta Kikuchi 6-2 5-7 6-1, Tsung-Hao Huang 6-2 6-4 and Kaichi Uchida 6-3 6-4.

In the quarter, Yasutaka had a good straight sets win against Uchida (6-3 6-4). During the match Uchiyama scored 70 points vs Uchida’s 53. Yasutaka was extremely aggressive to blast 30 winners.

Talking about serving, Uchiyama bagged 14 aces and he committed only 1 double fault for the entire match. Yasutaka Uchiyama was very efficient on serve to win 81% (30/37) of his 1st serve and 61% (14/23) on the second serve. This was the main reason for not conceding a single break during the match. Yasutaka broke Uchida twice after converting 25% of his break points (2/8).

Overall Performance in this tournament

The Japanese has conceded 1 set in the tournament to win 56% of the points he played.

The Japanese has an aggregate 15-19 win-loss record in 2025, 11-13 on hard (See FULL STATS).

Previously in the Zhangjiagang Challenger

Previously, he won this tournament twice in 2018 and 2024. See his history.

H2H Performance in the tournament (main draw)

Matches, sets, games and points

Points	Shimabukuro	Uchiyama
Match played	3	3
Tot Set	7	7
Tot Games	65	64
Pts	220-174	238-185
Total Points	394	423
Winners	77	91
%Winners	35%	38%

Both Shimabukuro and Uchiyama played 3 matches. Both players lost a set in the event. Sho Shimabukuro dropped 1 set, while Yasutaka Uchiyama dropped 1 set. Talking about their workload, Shimabukuro and Uchiyama have played the same amount of sets 7. However, Shimabukuro played 1 game more than Uchiyama. Shimabukuro scored 77 winners (35% of the total points). On the other side, Yasutaka blasted 91 winners (38%).

Serve Performance

Serve	Shimabukuro	Uchiyama
Aces	20	28
Avg per match	6.7	9.3
1st in	93/183	112/186
%1st in	51%	60%
1st pts	77/93	91/112
%1st pts	83%	81%
2nd pts	53/90	42/74
%2nd pts	59%	57%

Shimabukuro managed to score 20 aces (6.7 per match). Uchiyama bagged 28 aces (9.3 per match). Shimabukuro won 83% points behind his first serve. He extremely effective on his second serve to win 59% of the points. On the other side, Uchiyama won 81% of the points behind 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	Shimabukuro	Uchiyama
Won	10	11
Converted	10/24	11/31
% Converted	42%	35%
Conceded	12	7
Saved	8	5
% Saved	67%	71%
Times Broken	4	2

The Japanese broke his opponents 10 times with a 42% conversion rate. Sho lost his serve 4 times and he saved 67% of the break points that he conceded. Uchiyama broke his opponents 11 times with a 35% conversion rate. The Japanese conceded his serve twice and he saved 71% of the break points that he conceded.

Shimabukuro
	R1 Watt	R2 Peliwo	1/4 Simakin	Total
Score	6-4 3-6 6-2	6-3 6-4	6-4 6-3
Tot Set	3	2	2	7
Tot Games	27	19	19	65
pts	90-78	68-48	62-48	220-174
Total points	168	116	110	394
Winners	24	25	28	77
%Winners	27%	37%	45%	35%
SERVE
Aces	7	6	7	20
Double Faults	9	3	3	15
1st in	28/68	27/56	38/59	93/183
% 1st in	41%	48%	64%	51%
1st pts	24/28	25/27	28/38	77/93
% 1st pts	86%	93%	74%	83%
2nd pts	24/40	16/29	13/21	53/90
% 2nd pts	60%	55%	62%	59%
Breaks
Won	4	3	3	10
Converted	4/10	3/8	3/6	10/24
Converted %	40%	38%	50%	42%
Conceded	4	4	4	12
Saved	2/4	3/4	3/4	8
Saved %	50%	75%	75%	67%
Times Broken	2	1	1	4

Uchiyama
	R1 Kikuchi	R2 Huang	1/4 Uchida	Total
Score	6-2 5-7 6-1	6-2 6-4	6-3 6-4
Tot Set	3	2	2	7
Tot Games	27	18	19	64
pts	100-83	68-49	70-53	238-185
Total points	183	117	123	423
Winners	35	26	30	91
%Winners	35%	38%	43%	38%
SERVE
Aces	11	3	14	28
Double Faults	3	0	1	4
1st in	44/82	31/44	37/60	112/186
% 1st in	54%	70%	62%	60%
1st pts	35/44	26/31	30/37	91/112
% 1st pts	80%	84%	81%	81%
2nd pts	18/38	10/13	14/23	42/74
% 2nd pts	47%	77%	61%	57%
Breaks
Won	6	3	2	11
Converted	6/13	3/10	2/8	11/31
Converted %	46%	30%	25%	35%
Conceded	4	0	3	7
Saved	2/4	0/0	3/3	5
Saved %	50%	–	100%	50%
Times Broken	2	0	0	2

Tennis Scores in Zhangjiagang Challenger

• Oliver CrawfordCrawford – Renta TokudaTokuda (7-6¹ 3-6 6-2) – See score progression
• Kokoro IsomuraIsomura – Sanhui ShinShin (2-6 6-2 6-4) – See score progression
• Sho ShimabukuroShimabukuro – Ilia SimakinSimakin (6-4 6-3) – See score progression
• Yasutaka UchiyamaUchiyama – Kaichi UchidaUchida (6-3 6-4) – See score progression

Upcoming matches in the draw

• Sho ShimabukuroShimabukuro – Yasutaka UchiyamaUchiyama (2-2) – H2H and prediction
• Oliver CrawfordCrawford – (0-0) – H2H and prediction