Otto Virtanen and Stefanos Sakellaridis will face off in the 2^nd round of the Istanbul Challenger for the 1^st time in their career. They are scheduled to play on Thursday at 10:30 am on CENTER COURT. Here the head to head stats and relative prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Otto Virtanen who should win in 2 sets.

As per the initial odds, Otto Virtanen is the pick to win this match.
Otto Virtanen -> 1.37
Stefanos Sakellaridis -> 2.9

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Prediction and head to head Otto Virtanen vs. Stefanos Sakellaridis

There is no head to head record between Otto Virtanen and Stefanos Sakellaridis since this will be the first time that they will clash against each other in the main tour.

Otto Virtanen

Ranked no. 123, the Finn reached the 2^nd round after beating Pavel Kotov 6-4 6-2.

In the 1^st round, Otto had a good straight sets win against Kotov (6-4 6-2). During the match, Virtanen scored 58 points vs Kotov’s 43. Virtanen was pretty aggressive to blast 27 winners.

Regarding the service games, Virtanen made 8 aces and he committed only 5 double faults. Otto Virtanen conceded no breaks for the entire match to save 2 break points. Furthermore, Virtanen put 52% of his first serves in, winning 90% (27/30) of the points behind his 1st serve and 50% (14/28) on the 2nd serve. The Finn broke Kotov 3 times after converting 50% of his break points (3/6).

Virtanen has a winning record in the last 9 years having won 59% of his matches (221-154). 4-8 on hard in 2025. Regarding his performance on the same surface of this tournament, Virtanen has a compiled25-32 win-loss record in the last 9 years on hard.

His best result of the year was winning the title the Birmingham Challenger where he overcame Colton Smith in the final 6-4 6-4.

The Finn has a compiled 16-18 win-loss record in 2025, 4-8 on hard (See FULL STATS).

Previously in the Istanbul Challenger

Otto has never competed in this tournament before.

Stefanos Sakellaridis

Ranked no. 315 (career-high), Sakellaridis got to the 2^nd round after beating Christian Langmo 4-6 6-3 6-4.

In the 1^st round against Langmo, The Greek recovered from a 1-set down deficit before winning (4-6 6-3 6-4). During the match Sakellaridis scored 95 points vs Langmo’s 82. Sakellaridis was extremely aggressive to blast 39 winners.

Talking about serving, Sakellaridis made 8 aces and he committed only 3 double faults. Overall, Stefanos Sakellaridis was quite efficient on serve to win 85% (39/46) of his 1st serve and 70% (21/30) on the second serve. However, this didn’t prevent his to concede the serve once. Sakellaridis broke Langmo twice after converting 29% of his break points (2/7).

Sakellaridis’s best result of the season was reaching the final in M15 Monastir and M15 Heraklion.

The Greek has a composed 41-18 win-loss record in 2025, 30-10 on hard (See FULL STATS).

H2H Performance in the tournament

Matches, sets, games and points

Points	Virtanen	Sakellaridis
Match played	1	1
Tot Set	2	3
Tot Games	18	29
Pts	58-43	95-82
Total Points	101	177
Winners	27	39
%Winners	47%	41%

Both Virtanen and Sakellaridis played 1 match. At the moment, Stefanos Sakellaridis surrendered 1 set while Otto Virtanen hasn’t conceded a set so far. Virtanen has played 1 set(s) less than Sakellaridis (2 vs 3). Therefore, Virtanen played 11 games less than Sakellaridis. Otto scored 27 winners (47% of the total points). On the other side, The Greek managed to score 39 winners (41%).

Serve Performance

Serve	Virtanen	Sakellaridis
Aces	8	8
Avg per match	8	8
1st in	30/58	46/76
%1st in	52%	61%
1st pts	27/30	39/46
%1st pts	90%	85%
2nd pts	14/28	21/30
%2nd pts	50%	70%

Virtanen fired 8 aces . Sakellaridis recorded 8 aces . Virtanen won 90% points on his first serve. He had a solid display on his second serve to win 50% of the points. On the other side, Sakellaridis won 85% of the points on his first serve. He had a solid display on his second serve to win 70% of the points.

How they played the important points

Breaks	Virtanen	Sakellaridis
Won	3	2
Converted	3/6	2/7
% Converted	50%	29%
Conceded	2	3
Saved	2	2
% Saved	100%	67%
Times Broken	0	1

Otto broke his opponent 3 times with a 50% conversion rate. The Finn quite strong on his serve as he has never lost a single service game after saving 2 break points. Sakellaridis broke his opponent twice with a 29% conversion rate. The Greek conceded his serve once and he saved 67% of the break points that he conceded.

Virtanen
	R1 Kotov	Total
Score	6-4 6-2
Tot Set	2	2
Tot Games	18	18
pts	58-43	58-43
Total points	101	101
Winners	27	27
%Winners	47%	47%
SERVE
Aces	8	8
Double Faults	5	5
1st in	30/58	30/58
% 1st in	52%	52%
1st pts	27/30	27/30
% 1st pts	90%	90%
2nd pts	14/28	14/28
% 2nd pts	50%	50%
Breaks
Won	3	3
Converted	3/6	3/6
Converted %	50%	50%
Conceded	2	2
Saved	2/2	2
Saved %	100%	100%
Times Broken	0	0

Sakellaridis
	R1 Langmo	Total
Score	4-6 6-3 6-4
Tot Set	3	3
Tot Games	29	29
pts	95-82	95-82
Total points	177	177
Winners	39	39
%Winners	41%	41%
SERVE
Aces	8	8
Double Faults	3	3
1st in	46/76	46/76
% 1st in	61%	61%
1st pts	39/46	39/46
% 1st pts	85%	85%
2nd pts	21/30	21/30
% 2nd pts	70%	70%
Breaks
Won	2	2
Converted	2/7	2/7
Converted %	29%	29%
Conceded	3	3
Saved	2/3	2
Saved %	67%	67%
Times Broken	1	1

Tennis Scores in Istanbul Challenger

• Milos KarolKarol – Lukas KleinKlein (6-7⁶ 6-2 7-5) – Stats, scores, rankings
• Alex MolcanMolcan – Martin LandaluceLandaluce (6-3 6-4) – Stats, scores, rankings
• Nicolas MejiaMejia – Marek GengelGengel (7-6⁸ 3-6 6-2) – Stats, scores, rankings
• Abedallah ShelbayhShelbayh – Viktor DurasovicDurasovic (6-4 6-0) – Stats, scores, rankings

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