Tomas Barrios Vera and Adolfo Daniel Vallejo will square off in the quarter of the Curitiba Challenger for the 2^nd time in their career. They are scheduled to play on Friday at 11:00 am on QUADRA CENTRAL. In this post, we analyze their head to head performance and prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Tomas Barrios Vera who should win in 3 sets.

As per the initial odds, Tomas Barrios Vera is the pick to win this match.
Tomas Barrios Vera -> 1.48
Adolfo Daniel Vallejo -> 2.52

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Prediction and head to head Tomas Barrios Vera vs. Adolfo Daniel Vallejo

This will be the 2^nd time that Tomas Barrios Vera and Adolfo Daniel Vallejo clash against each other. The head to head is 1-0 for Daniel Vallejo (see full H2H stats), 1-0 on clay.

The last time that they played, Daniel Vallejo won 6-3 6-2 in the quarter in the Antofagasta Challenger back in October 2025.

Tomas Barrios Vera

Ranked no. 119, Tomas Barrios Vera got to the quarter after defeating Joao Lucas Reis Da Silva 3-6 6-4 6-2 and Murkel Dellien 6-1 6-1.

In the 2^nd round, The Chilean had a good straight sets win against Alejandro Dellien Velasco (6-1 6-1). During the match, Tomas Barrios Vera scored 55 points vs Alejandro Dellien Velasco’s 26. Tomas Barrios Vera was very aggressive to blast 21 winners.

Regarding the service games, Tomas Barrios Vera scored just 1 ace during the encounter and he committed only 1 double fault. Overall, Tomas Barrios Vera was extremely effective on serve to win 72% (21/29) of his 1st serve and 62% (8/13) on the second serve. However, this didn’t prevent his to concede the serve once. The Chilean broke Alejandro Dellien Velasco 6 times after converting 50% of his break points (6/12).

Overall Performance in this tournament

The Chilean has conceded 1 set in this tournament to conquer 58% of the points he played.

Tomas Barrios Vera has a solid match record in the last 10 years having won 63% of his matches (385-224). 35-17 on clay in 2025. Regarding his performance on the same surface of this competition, Tomas Barrios Vera has a compiled 292-157 win-loss record in the last years on clay.

His best result of the current year was winning the title the Campinas Challenger where he overcame Alvaro Guillen Meza in the final 6-4 6-3 and the Cali Challenger where he overcame Juan Carlos Prado Angelo in the final 6-1 6-4.

Tomas Barrios Vera has an aggregate 44-25 win-loss record in 2025, 35-17 on clay (See FULL STATS).

Previously in the Curitiba Challenger

Adolfo Daniel Vallejo

Ranked no. 253, Adolfo got to the quarter after defeating Emilio Nava 6-2 6-3 and Matias Soto 6-3 6-2.

In the 2^nd round, Daniel Vallejo had a good straight sets win against Soto (6-3 6-2). During the match Daniel Vallejo scored 60 points vs Soto’s 43. Adolfo was quite aggressive to blast 27 winners.

Talking about serving, Daniel Vallejo bagged 4 aces and he committed only 1 double fault for the entire match. Adolfo Daniel Vallejo was extremely effective on serve to win 79% (27/34) of his 1st serve and 63% (10/16) on the second serve. This was the main reason for not conceding a single break during the match. The Paraguayan broke Soto 3 times after converting 60% of his break points (3/5).

Overall Performance in this tournament

Adolfo hasn’t dropped yet a set in the tournament to win 58% of the points he played.

The Paraguayan’s best result of the current season was getting to the final in the Buenos Aires Challenger,M25 Punta del Este,M25 Mar Del Plata and M25 Londrina.

The Paraguayan has an overall 36-25 win-loss record in 2025, 35-21 on clay (See FULL STATS).

Previously in the Curitiba Challenger

Previously, his best result was reaching the 2^nd round in 2024. See his history.

H2H Performance in the tournament (main draw)

Matches, sets, games and points

Points	Tomas Barrios Vera	Daniel Vallejo
Match played	2	2
Tot Set	5	4
Tot Games	41	34
Pts	140-102	123-88
Total Points	242	211
Winners	51	51
%Winners	36%	41%

Both Tomas Barrios Vera and Daniel Vallejo played 2 matches. At the moment, Tomas Barrios Vera surrendered 1 set while Adolfo Daniel Vallejo hasn’t conceded a set so far. Tomas Barrios Vera has played 1 set more than Daniel Vallejo (5 vs 4). Therefore, Tomas Barrios Vera played 7 games more than Daniel Vallejo. Tomas Barrios Vera scored 51 winners (36% of the total points). On the other side, The Paraguayan recorded 51 winners (41%).

Serve Performance

Serve	Tomas Barrios Vera	Daniel Vallejo
Aces	8	6
Avg per match	4	3
1st in	74/128	64/97
%1st in	58%	66%
1st pts	51/74	51/64
%1st pts	69%	80%
2nd pts	29/54	19/33
%2nd pts	54%	58%

Tomas Barrios Vera bagged 8 aces (4 per match). Daniel Vallejo blasted 6 aces (3 per match). Tomas Barrios Vera won 69% points behind his first serve. He pretty solid on his second serve to win 54% of the points. On the other side, Daniel Vallejo won 80% of the points behind his first serve. He had a solid display on his second serve to win 58% of the points.

How they played the important points

Breaks	Tomas Barrios Vera	Daniel Vallejo
Won	11	7
Converted	11/18	7/13
% Converted	61%	54%
Conceded	13	2
Saved	8	2
% Saved	62%	100%
Times Broken	5	0

Marcelo broke his opponents 11 times with a 61% conversion rate. Tomas Barrios Vera surrendered his serve 5 times and he saved 62% of the break points that he conceded. Daniel Vallejo broke his opponents 7 times with a 54% conversion rate. Daniel Vallejo was rock solid on his serve as he has never conceded a single service game after saving 2 break points.

Tomas Barrios Vera
	R1 Lucas Reis Da	R2 Alejandro Dellien Velasco	Total
Score	3-6 6-4 6-2	6-1 6-1
Tot Set	3	2	5
Tot Games	27	14	41
pts	85-76	55-26	140-102
Total points	161	81	242
Winners	30	21	51
%Winners	35%	38%	36%
SERVE
Aces	7	1	8
Double Faults	2	1	3
1st in	45/86	29/42	74/128
% 1st in	52%	69%	58%
1st pts	30/45	21/29	51/74
% 1st pts	67%	72%	69%
2nd pts	21/41	8/13	29/54
% 2nd pts	51%	62%	54%
Breaks
Won	5	6	11
Converted	5/6	6/12	11/18
Converted %	83%	50%	61%
Conceded	11	2	13
Saved	7/11	1/2	8
Saved %	64%	50%	57%
Times Broken	4	1	5

Daniel Vallejo
	R1 Nava	R2 Soto	Total
Score	6-2 6-3	6-3 6-2
Tot Set	2	2	4
Tot Games	17	17	34
pts	63-45	60-43	123-88
Total points	108	103	211
Winners	24	27	51
%Winners	38%	45%	41%
SERVE
Aces	2	4	6
Double Faults	1	1	2
1st in	30/47	34/50	64/97
% 1st in	64%	68%	66%
1st pts	24/30	27/34	51/64
% 1st pts	80%	79%	80%
2nd pts	9/17	10/16	19/33
% 2nd pts	53%	63%	58%
Breaks
Won	4	3	7
Converted	4/8	3/5	7/13
Converted %	50%	60%	54%
Conceded	0	2	2
Saved	0/0	2/2	2
Saved %	–	100%	50%
Times Broken	0	0	0

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