Olga Danilovic and Tereza Valentova will face off in the quarter of the Japan Open for the 1^st time in their career. They are scheduled to compete on Friday at 7:00 pm on CENTER. 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 Tereza Valentova who should win in 2 sets.

As per the initial odds, Tereza Valentova is the pick to win this match.
Tereza Valentova -> 1.36
Olga Danilovic -> 3.125

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Prediction and head to head Olga Danilovic vs. Tereza Valentova

There is no head to head record between Olga Danilovic and Tereza Valentova since this will be the first time that they will play each other in the main tour.

Olga Danilovic

Ranked no. 49, Olga got to the quarter after beating Nao Hibino 6-4 1-6 6-2 and Ashlyn Krueger 6-4 6-4.

In the 2^nd round, The Serbian had a good straight sets win against Krueger (6-4 6-4). During the match, Danilovic scored 65 points vs Krueger’s 54. The Serbian was exceptionally aggressive to blast 30 winners.

Regarding the service games, Danilovic recorded 7 aces and she committed only 1 double fault. Overall, Olga Danilovic was quite effective on serve to win 73% (30/41) of her 1st serve and 77% (10/13) on the second serve. However, this didn’t prevent her to concede the serve once. The Serbian broke Krueger 3 times after converting 43% of her break points (3/7).

Overall Performance in this tournament

Danilovic has conceded 1 set in this tournament to conquer 53% of the points she played.

Danilovic has a solid record in the last 10 years having won 63% of her matches (228-133). 6-8 on hard in 2025. Talking about her performance on the same surface of this event, Danilovic has an overall 46-41 win-loss record in the last years on hard.

Her best result of the season was winning the title the Antalya where she defeated Victoria Jimenez Kasintseva in the final 6-2 6-3.

The Serbian has a compiled 23-16 win-loss record in 2025, 6-8 on hard (See FULL STATS).

Previously in Osaka

The Serbian has never competed in this tournament before.

Tereza Valentova

Ranked no. 78, Tereza reached the quarter after defeating Alina Charaeva 6-1 6-2, Greetje Minnen 4-6 6-4 6-2, Alexandra Eala 6-1 6-2 and Elise Mertens 6-4 6-1.

In the 2^nd round, Tereza had a good straight sets win against Mertens (6-4 6-1). During the match Valentova scored 60 points vs Mertens’s 39. Valentova was quite aggressive to blast 25 winners.

About the serving games, Valentova scored 3 aces and she committed only 2 double faults. Overall, Tereza Valentova was exceptionally efficient on serve to win 83% (25/30) of her 1st serve and 54% (13/24) on the second serve. However, this didn’t prevent her to concede the serve once. Valentova broke Mertens 4 times after converting 67% of her break points (4/6).

Overall Performance in this tournament

Tereza started her run at this tournament from the qualifications. In the main draw, she has conceded 1 set in the tournament to win 57% of the points she played.

Her best result of the year was winning the title the W75 Porto where she overcame Nastasja Mariana Schunk in the final 6-3 6-4 and the W75 Murska Sobota where she defeated Mariam Bolkvadze in the final 1-6 6-3 6-2 and the Grado where she overcame Barbora Palicova in the final 6-2 4-6 6-1 and the Porto where she overcame Lanlana Tararudee in the final 6-4 6-2.

Valentova has an overall 47-11 win-loss record in 2025, 16-3 on hard (See FULL STATS).

H2H Performance in the tournament (main draw)

Matches, sets, games and points

Points	Danilovic	Valentova
Match played	2	4
Tot Set	5	9
Tot Games	45	75
Pts	140-126	280-207
Total Points	266	487
Winners	65	114
%Winners	46%	41%

Danilovic played 2 matches while Valentova competed in 4 matches. Valentova started her run from the qualifications while Danilovic had a direct access to the main draw. Both players lost a set in the event. Olga Danilovic dropped 1 set, while Tereza Valentova surrendered 1 set. Danilovic has played 4 set(s) less than Valentova (5 vs 9). Therefore, Danilovic played 30 games less than Valentova. Olga scored 65 winners (46% of the total points). On the other side, Valentova fired 114 winners (41%).

Serve Performance

Serve	Danilovic	Valentova
Aces	13	19
Avg per match	6.5	4.8
1st in	95/133	145/249
%1st in	71%	58%
1st pts	65/95	114/145
%1st pts	68%	79%
2nd pts	20/38	54/104
%2nd pts	53%	52%

Danilovic fired 13 aces (6.5 per match). Valentova recorded 19 aces (4.8 per match). Danilovic won 68% points on her first serve. She had a solid display on her second serve to win 53% of the points. On the other side, Valentova won 79% of the points on her first serve. She had a solid display on her second serve to win 52% of the points.

How they played the important points

Breaks	Danilovic	Valentova
Won	8	17
Converted	8/15	17/29
% Converted	53%	59%
Conceded	10	18
Saved	4	15
% Saved	40%	83%
Times Broken	6	3

Danilovic broke her opponents 8 times with a 53% conversion rate. Olga conceded her serve 6 times and she saved 40% of the break points that she conceded. The Czech broke her opponents 17 times with a 59% conversion rate. Tereza conceded her serve 3 times and she saved 83% of the break points that she conceded.

Danilovic
	R1 Hibino	R2 Krueger	Total
Score	6-4 1-6 6-2	6-4 6-4
Tot Set	3	2	5
Tot Games	25	20	45
pts	75-72	65-54	140-126
Total points	147	119	266
Winners	35	30	65
%Winners	47%	46%	46%
SERVE
Aces	6	7	13
Double Faults	4	1	5
1st in	54/79	41/54	95/133
% 1st in	68%	76%	71%
1st pts	35/54	30/41	65/95
% 1st pts	65%	73%	68%
2nd pts	10/25	10/13	20/38
% 2nd pts	40%	77%	53%
Breaks
Won	5	3	8
Converted	5/8	3/7	8/15
Converted %	63%	43%	53%
Conceded	8	2	10
Saved	3/8	1/2	4
Saved %	38%	50%	44%
Times Broken	5	1	6

Valentova
	Q1 Charaeva	Q3 Minnen	R1 Eala	R2 Mertens	Total
Score	6-1 6-2	4-6 6-4 6-2	6-1 6-2	6-4 6-1
Tot Set	2	3	2	2	9
Tot Games	15	28	15	17	75
pts	66-44	85-71	69-53	60-39	280-207
Total points	110	156	122	99	487
Winners	24	37	28	25	114
%Winners	36%	44%	41%	42%	41%
SERVE
Aces	7	6	3	3	19
Double Faults	2	3	3	2	10
1st in	30/54	41/74	44/67	30/54	145/249
% 1st in	56%	55%	66%	56%	58%
1st pts	24/30	37/41	28/44	25/30	114/145
% 1st pts	80%	90%	64%	83%	79%
2nd pts	13/24	18/33	10/23	13/24	54/104
% 2nd pts	54%	55%	43%	54%	52%
Breaks
Won	4	3	6	4	17
Converted	4/7	3/6	6/10	4/6	17/29
Converted %	57%	50%	60%	67%	59%
Conceded	5	3	6	4	18
Saved	5/5	2/3	5/6	3/4	15
Saved %	100%	67%	83%	75%	163%
Times Broken	0	1	1	1	3

Tennis Scores in Osaka

• Nadiya Kichenok/Makoto NinomiyaKichenok/Makoto Ninomiya – Jaqueline Cristian/Olga DanilovicCristian/Olga Danilovic (7-5 5-7 10-6) – Stats, scores, rankings
• Tobias KamkeKamke – Attila BalazsBalazs (1-6 6-4 6-4) – Stats, scores, rankings
• Javier Barranco CosanoBarranco Cosano – Jozef KovalikKovalik (7-6⁵ 7-6⁵) – Stats, scores, rankings
• Henri LaaksonenLaaksonen – Lukas RosolRosol (7-6⁴ 6-7⁴ 6-3) – Stats, scores, rankings
• Thiago Moura MonteiroMoura Monteiro – Casper RuudRuud (6-4 6-7⁷ 6-3) – Stats, scores, rankings

Upcoming matches in the draw

• Naomi OsakaOsaka – Jaqueline CristianCristian (0-0) – H2H and prediction
• Rebecca SramkovaSramkova – Leylah Annie FernandezAnnie Fernandez (1-0) – H2H and prediction
• Viktorija GolubicGolubic – Sorana CirsteaCirstea (0-1) – H2H and prediction