Dominik Koepfer and Gabriel Diallo will square off in the semifinal of the Calgary Challenger for the 2^nd time in their career. They are scheduled to play on Saturday at 3:00 pm on NATIONAL BANK 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 Dominik Koepfer who should win in 3 sets.

As per the initial odds, Dominik Koepfer is the pick to win this match.
Dominik Koepfer -> 1.73
Gabriel Diallo -> 2.05

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Prediction and head to head Dominik Koepfer vs. Gabriel Diallo

This will be the 2^nd time that Dominik Koepfer and Gabriel Diallo fight against each other. The head to head is 1-0 for Koepfer (see full H2H stats), 1-0 on indoor hard courts.

The last time that they fought against each other, Koepfer won 7-6(2) 6-1 in the semifinal in the Calgary Challenger back in 2022.

Dominik Koepfer

Ranked no. 71, Koepfer got to the semifinal after beating Charles Broom 6-2 6-3, Clement Chidekh 6-3 6-3 and Zizou Bergs 6-1 6-3.

In the quarter, The German had a good straight sets win against Bergs (6-1 6-3). During the match, Koepfer scored 58 points vs Bergs’s 35. Koepfer was exceptionally aggressive to blast 23 winners.

Regarding the service games, Koepfer struck 4 aces and he committed only 2 double faults. Dominik Koepfer was extremely efficient on serve to win 88% (23/26) of his 1st serve and 58% (11/19) on the second serve. This was the main reason for not conceding a single break during the match. Dominik broke Bergs 4 times after converting 67% of his break points (4/6).

Overall Performance in this tournament

Dominik hasn’t dropped yet a set in this competition to win 59% of the points he played.

Koepfer has a solid win-loss record in the last 8 years having won 61% of his matches (273-177). 4-4 on indoor hard courts in 2023. In connection with his performance on the same surface of this competition, Koepfer has an aggregate53-36 record in the last 8 years on indoor hard courts.

His best result of the season was winning the title the Mexico City Challenger where he beat Thiago Agustin Tirante in the final 2-6 6-4 6-2 and the Turin Challenger where he defeated Federico Gaio in the final 6-7(5) 6-2 6-0.

Koepfer has an overall 38-17 win-loss record in 2023, 4-4 on indoor hard courts (See FULL STATS).

Previously in the Calgary Challenger

Gabriel Diallo

Ranked no. 133, the Canadian got to the semifinal after beating Andrew Paulson 4-6 7-6⁸ 6-4, Joao Sousa 5-7 7-5 6-3 and Aziz Dougaz 6-3 6-2.

In the quarter, Gabriel had a good straight sets win against Dougaz (6-3 6-2). During the match Diallo scored 65 points vs Dougaz’s 44. Gabriel was quite aggressive to blast 32 winners.

Talking about serving, Diallo managed to score 5 aces and he committed only 4 double faults. Gabriel Diallo was very efficient on serve to win 80% (32/40) of his 1st serve and 52% (11/21) on the second serve. This was the main reason for not conceding a single break during the match. Diallo was clinical in his return game without wasting any break point and break Dougaz 3 times.

Overall Performance in this tournament

The Canadian has conceded 2 set in the tournament to win 53% of the points he played.

His best result of the year was winning the title the Bratislava 2 Challenger where he overcame Joris De Loore in the final 6-0 7-5.

Gabriel has a composed 39-27 win-loss record in 2023, 24-9 on indoor hard courts (See FULL STATS)

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Previously in the Calgary Challenger

Previously, his best result was reaching the semifinal in 2022. See his history.

H2H Performance in the tournament (main draw)

Matches, sets, games and points

Points	Koepfer	Diallo
Match played	3	3
Tot Set	6	8
Tot Games	51	83
Pts	191-132	274-242
Total Points	323	516
Winners	69	133
%Winners	36%	49%

Both Koepfer and Diallo played 3 matches. At the moment, Gabriel Diallo conceded 2 sets while Dominik Koepfer hasn’t lost a set so far. Koepfer has played 2 set(s) less than Diallo (6 vs 8). Therefore, Koepfer played 32 games less than Diallo. The German scored 69 winners (36% of the total points). On the other side, Gabriel managed to score 133 winners (49%).

Serve Performance

Serve	Koepfer	Diallo
Aces	12	36
Avg per match	4	12
1st in	87/150	162/261
%1st in	58%	62%
1st pts	69/87	133/162
%1st pts	79%	82%
2nd pts	39/63	40/99
%2nd pts	62%	40%

Koepfer struck 12 aces (4 per match). Diallo managed to score 36 aces (12 per match). Koepfer won 79% points on his first serve. He had a solid display on his second serve to win 62% of the points. On the other side, Diallo won 82% of the points on his first serve. He had a solid display on his second serve to win 40% of the points.

How they played the important points

Breaks	Koepfer	Diallo
Won	11	10
Converted	11/23	10/18
% Converted	48%	56%
Conceded	4	17
Saved	4	11
% Saved	100%	65%
Times Broken	0	6

The German broke his opponents 11 times with a 48% conversion rate. Koepfer pretty effective on his serve as he has never conceded a single service game after saving 4 break points. Diallo broke his opponents 10 times with a 56% conversion rate. The Canadian conceded his serve 6 times and he saved 65% of the break points that he conceded.

Koepfer
	R1 Broom	R2 Chidekh	1/4 Bergs	Total
Score	6-2 6-3	6-3 6-3	6-1 6-3
Tot Set	2	2	2	6
Tot Games	17	18	16	51
pts	62-44	71-53	58-35	191-132
Total points	106	124	93	323
Winners	23	23	23	69
%Winners	37%	32%	40%	36%
SERVE
Aces	3	5	4	12
Double Faults	5	3	2	10
1st in	29/53	32/52	26/45	87/150
% 1st in	55%	62%	58%	58%
1st pts	23/29	23/32	23/26	69/87
% 1st pts	79%	72%	88%	79%
2nd pts	13/24	15/20	11/19	39/63
% 2nd pts	54%	75%	58%	62%
Breaks
Won	4	3	4	11
Converted	4/7	3/10	4/6	11/23
Converted %	57%	30%	67%	48%
Conceded	2	2	0	4
Saved	2/2	2/2	0/0	4
Saved %	100%	100%	–	67%
Times Broken	0	0	0	0

Diallo
	R1 Paulson	R2 Sousa	1/4 Dougaz	Total
Score	4-6 7-68 6-4	5-7 7-5 6-3	6-3 6-2
Tot Set	3	3	2	8
Tot Games	33	33	17	83
pts	102-94	107-104	65-44	274-242
Total points	196	211	109	516
Winners	53	48	32	133
%Winners	52%	45%	49%	49%
SERVE
Aces	20	11	5	36
Double Faults	6	9	4	19
1st in	64/95	58/105	40/61	162/261
% 1st in	67%	55%	66%	62%
1st pts	53/64	48/58	32/40	133/162
% 1st pts	83%	83%	80%	82%
2nd pts	14/31	15/47	11/21	40/99
% 2nd pts	45%	32%	52%	40%
Breaks
Won	2	5	3	10
Converted	2/3	5/12	3/3	10/18
Converted %	67%	42%	100%	56%
Conceded	4	7	6	17
Saved	2/4	3/7	6/6	11
Saved %	50%	43%	100%	64%
Times Broken	2	4	0	6

Tennis Scores in Calgary Challenger

• Gabriel DialloDiallo – Aziz DougazDougaz (6-3 6-2) – See score progression
• Dominik KoepferKoepfer – Zizou BergsBergs (6-1 6-3) – See score progression
• Andres MartinMartin – Enzo WallartWallart (6-1 6-1) – See score progression
• Liam DraxlDraxl – Inaki Montes-De La TorreMontes-De La Torre (7-5 5-7 6-1) – See score progression
• Juan Carlos Manuel Aguilar/Justin BoulaisCarlos Manuel Aguilar/Justin Boulais – George Goldhoff/Alfredo PerezGoldhoff/Alfredo Perez (3-6 7-6³ 10-7) – See score progression

Upcoming matches in the draw

• Dominik KoepferKoepfer – Gabriel DialloDiallo (1-0) – H2H and prediction