Tomas Barrios Vera and Adolfo Daniel Vallejo will face off in the quarter of the Antofagasta Challenger for the 1^st time in their career. They are scheduled to play on Friday at 3:00 pm on CANCHA 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 2 sets.

As per the initial odds, Tomas Barrios Vera is the pick to win this match.
Tomas Barrios Vera -> 1.35
Adolfo Daniel Vallejo -> 2.99

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

There is no head to head record between Tomas Barrios Vera and Adolfo Daniel Vallejo since this will be the first time that they will play each other in the main tour.

Tomas Barrios Vera

Ranked no. 137, Marcelo reached the quarter after beating Genaro Alberto Olivieri 6-2 6-4 and Lautaro Midon 6-2 6-2.

In the 2^nd round, The Chilean had a good straight sets win against Midon (6-2 6-2). During the match, Tomas Barrios Vera scored 60 points vs Midon’s 41. The Chilean was exceptionally aggressive to blast 20 winners.

Regarding the service games, Tomas Barrios Vera blasted 3 aces and he was very steady in conceding no double faults. Tomas Barrios Vera lost the serve once. Furthermore, Tomas Barrios Vera put 72% of his first serves in, winning 65% (20/31) of the points behind his 1st serve and 83% (10/12) on the 2nd serve. Marcelo broke Midon 5 times after converting 56% of his break points (5/9).

Overall Performance in this tournament

Tomas Barrios Vera hasn’t lost yet a set in this tournament to conquer 59% of the points he played.

Tomas Barrios Vera has a solid match record in the last 10 years having won 63% of his matches (378-223). 28-16 on clay in 2025. In connection with his performance on the same surface of this competition, Tomas Barrios Vera has a composed 285-156 win-loss record in the last years on clay.

His best result of the season was winning the title the Campinas Challenger where he beat Alvaro Guillen Meza in the final 6-4 6-3.

The Chilean has a composed 37-24 win-loss record in 2025, 28-16 on clay (See FULL STATS).

Previously in the Antofagasta Challenger

Adolfo Daniel Vallejo

Ranked no. 268, Adolfo reached the quarter after defeating Andrea Collarini 1-6 6-1 6-2 and Aristotelis Thanos 6-3 6-3.

In the 2^nd round, Daniel Vallejo had a good straight sets win against Thanos (6-3 6-3). During the match Daniel Vallejo scored 68 points vs Thanos’s 57. The Paraguayan was extremely aggressive to blast 25 winners.

Talking about serving, Daniel Vallejo fired 2 aces and he committed only 6 double faults. Adolfo Daniel Vallejo lost the serve once and he saved 4 break points. Furthermore, Daniel Vallejo put 54% of his first serves in, winning 74% (25/34) of the points behind his 1st serve and 48% (14/29) on the 2nd serve. The Paraguayan broke Thanos 4 times after converting 33% of his break points (4/12).

Overall Performance in this tournament

Adolfo has conceded 1 set in the tournament to win 54% of the points he played.

Daniel Vallejo’s best result of the year was reaching the final in the Buenos Aires Challenger,M25 Punta del Este,M25 Mar Del Plata and M25 Londrina.

Adolfo has an aggregate 33-23 win-loss record in 2025, 32-19 on clay (See FULL STATS).

Previously in the Antofagasta Challenger

Previously, his best result was reaching the final 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	4	5
Tot Games	34	40
Pts	121-84	141-119
Total Points	205	260
Winners	44	52
%Winners	36%	37%

Both Tomas Barrios Vera and Daniel Vallejo played 2 matches. At the moment, Adolfo Daniel Vallejo surrendered 1 set while Tomas Barrios Vera hasn’t surrendered a set so far. Tomas Barrios Vera has played 1 set(s) less than Daniel Vallejo (4 vs 5). Therefore, Tomas Barrios Vera played 6 games less than Daniel Vallejo. Tomas Barrios Vera scored 44 winners (36% of the total points). On the other side, The Paraguayan managed to score 52 winners (37%).

Serve Performance

Serve	Tomas Barrios Vera	Daniel Vallejo
Aces	3	5
Avg per match	1.5	2.5
1st in	63/92	74/133
%1st in	68%	56%
1st pts	44/63	52/74
%1st pts	70%	70%
2nd pts	20/29	32/59
%2nd pts	69%	54%

Tomas Barrios Vera managed to score 3 aces (1.5 per match). Daniel Vallejo fired 5 aces (2.5 per match). Tomas Barrios Vera won 70% points on his first serve. He extremely effective on his second serve to win 69% of the points. On the other side, Daniel Vallejo won 70% of the points behind his first serve. He had a solid display on his second serve to win 54% of the points.

How they played the important points

Breaks	Tomas Barrios Vera	Daniel Vallejo
Won	9	8
Converted	9/15	8/18
% Converted	60%	44%
Conceded	2	11
Saved	0	8
% Saved	0%	73%
Times Broken	2	3

The Chilean broke his opponents 9 times with a 60% conversion rate. Tomas Barrios Vera lost his serve twice and he saved 0% of the break points that he conceded. Adolfo broke his opponents 8 times with a 44% conversion rate. Daniel Vallejo conceded his serve 3 times and he saved 73% of the break points that he conceded.

Tomas Barrios Vera
	R1 Alberto Olivieri	R2 Midon	Total
Score	6-2 6-4	6-2 6-2
Tot Set	2	2	4
Tot Games	18	16	34
pts	61-43	60-41	121-84
Total points	104	101	205
Winners	24	20	44
%Winners	39%	33%	36%
SERVE
Aces	0	3	3
Double Faults	3	0	3
1st in	32/49	31/43	63/92
% 1st in	65%	72%	68%
1st pts	24/32	20/31	44/63
% 1st pts	75%	65%	70%
2nd pts	10/17	10/12	20/29
% 2nd pts	59%	83%	69%
Breaks
Won	4	5	9
Converted	4/6	5/9	9/15
Converted %	67%	56%	60%
Conceded	1	1	2
Saved	0/1	0/1	0
Saved %	0%	0%	0%
Times Broken	1	1	2

Daniel Vallejo
	R1 Collarini	R2 Thanos	Total
Score	1-6 6-1 6-2	6-3 6-3
Tot Set	3	2	5
Tot Games	22	18	40
pts	73-62	68-57	141-119
Total points	135	125	260
Winners	27	25	52
%Winners	37%	37%	37%
SERVE
Aces	3	2	5
Double Faults	3	6	9
1st in	40/70	34/63	74/133
% 1st in	57%	54%	56%
1st pts	27/40	25/34	52/74
% 1st pts	68%	74%	70%
2nd pts	18/30	14/29	32/59
% 2nd pts	60%	48%	54%
Breaks
Won	4	4	8
Converted	4/6	4/12	8/18
Converted %	67%	33%	44%
Conceded	6	5	11
Saved	4/6	4/5	8
Saved %	67%	80%	74%
Times Broken	2	1	3

Upcoming matches in the draw

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• Alvaro Guillen MezaGuillen Meza – Facundo Diaz AcostaDiaz Acosta (0-0) – H2H and prediction