Stefan Palosi and John Sperle will face off in the qualifications of the Zadar Challenger for the 1st time in their career. They are scheduled to compete on Monday at 12:30 pm on COURT 3. Here the head to head stats and relative prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Stefan Palosi who should win in 2 sets.
As per the initial odds, Stefan Palosi is the pick to win this match.
Stefan Palosi -> 1.3
John Sperle -> 3.14
Here where top tennis events are broadcasted or streamed online (ATP, WTA).
At the challenger level, there will be free live streaming on Challenger TV.
Prediction and head to head Stefan Palosi vs. John Sperle
There is no head to head record between Stefan Palosi and John Sperle since this will be the first time that they will play each other in the main tour.
Stefan Palosi
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2026 | 20-16 | 0-0 | 20-15 | 0-1 | 0-0 | 0-0 |
| 2025 | 48-26 | 1-1 | 47-24 | 0-1 | 0-0 | 0-0 |
| 2024 | 51-26 | 15-8 | 36-17 | 0-1 | 0-0 | 0-0 |
| 2023 | 18-16 | 3-2 | 15-14 | 0-0 | 0-0 | 0-0 |
| 2022 | 39-23 | 2-4 | 37-19 | 0-0 | 0-0 | 0-0 |
Ranked no. 395 (career-high), the Romanian got to the qualifications after defeating Matthias Ujvary 7-6(5) 7-6(0).
In the qualifications, Palosi had a good straight sets win against Ujvary (7-65 7-60). During the match, Palosi scored 97 points vs Ujvary’s 91. Stefan was extremely aggressive to blast 46 winners.
Regarding the service games, Palosi scored just 1 ace during the match and he committed only 2 double faults. Stefan Palosi lost the serve 5 times and he saved 8 break points. Furthermore, Palosi put 76% of his first serves in, winning 59% (46/78) of the points behind his 1st serve and 50% (12/24) on the 2nd serve. Stefan broke Ujvary 5 times after converting 56% of his break points (5/9).
Palosi has a solid record in the last 9 years having won 64% of his matches (283-157). 15-5 on clay in 2026. Talking about his performance on the same surface of this competition, Palosi has a composed214-113 match record in the last 9 years on clay.
Palosi has a compiled 15-6 win-loss record in 2026, 15-5 on clay (See FULL STATS).
Previously in the Zadar Challenger
Stefan has never competed in this tournament before.
John Sperle
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2026 | 35-22 | 0-0 | 34-21 | 1-1 | 0-0 | 0-0 |
| 2025 | 31-28 | 0-0 | 31-28 | 0-0 | 0-0 | 0-0 |
| 2024 | 39-26 | 6-8 | 33-18 | 0-0 | 0-0 | 0-0 |
| 2023 | 42-26 | 10-7 | 32-18 | 0-1 | 0-0 | 0-0 |
| 2022 | 27-21 | 1-2 | 24-16 | 2-2 | 0-0 | 0-1 |
Ranked no. 824, John got to the qualifications after defeating Stefan Popovic 1-6 7-6(3) 6-1.
In the qualifications against Popovic, John recovered from a 1-set down deficit before winning (1-6 7-63 6-1). During the match Sperle scored 87 points vs Popovic’s 77. Sperle was extremely aggressive to blast 31 winners.
Talking about serving, Sperle struck 3 aces and he was extremely solid in conceding no double faults for the entire match. Overall, John Sperle was exceptionally efficient on serve to win 72% (31/43) of his 1st serve and 53% (19/36) on the second serve. However, this didn’t prevent his to concede the serve 4 times. John broke Popovic 3 times after converting 60% of his break points (3/5).
Sperle has an aggregate 7-5 win-loss record in 2026, 6-4 on clay (See FULL STATS).
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H2H Performance in the tournament
Matches, sets, games and points
| Points | Palosi | Sperle |
|---|---|---|
| Match played | 1 | 1 |
| Tot Set | 2 | 3 |
| Tot Games | 26 | 27 |
| Pts | 97-91 | 87-77 |
| Total Points | 188 | 164 |
| Winners | 46 | 31 |
| %Winners | 47% | 36% |
Both Palosi and Sperle played 1 match. Also both players started their run from the qualifications.At the moment, John Sperle lost 1 set while Stefan Palosi hasn’t dropped a set so far. Palosi has played 1 set(s) less than Sperle (2 vs 3). Therefore, Palosi played 1 game less than Sperle. The Romanian scored 46 winners (47% of the total points). On the other side, Sperle struck 31 winners (36%).
Serve Performance
| Serve | Palosi | Sperle |
|---|---|---|
| Aces | 1 | 3 |
| Avg per match | 1 | 3 |
| 1st in | 78/102 | 43/79 |
| %1st in | 76% | 54% |
| 1st pts | 46/78 | 31/43 |
| %1st pts | 59% | 72% |
| 2nd pts | 12/24 | 19/36 |
| %2nd pts | 50% | 53% |
Palosi bagged 1 ace . Sperle also fired 3 aces . Palosi won 59% points on his first serve. He very solid his second serve to win 50% of the points. On the other side, Sperle won 72% of the points behind his first serve. He had a solid display on his second serve to win 53% of the points.
How they played the important points
| Breaks | Palosi | Sperle |
|---|---|---|
| Won | 5 | 3 |
| Converted | 5/9 | 3/5 |
| % Converted | 56% | 60% |
| Conceded | 13 | 6 |
| Saved | 8 | 2 |
| % Saved | 62% | 33% |
| Times Broken | 5 | 4 |
Palosi broke his opponent 5 times with a 56% conversion rate. Palosi conceded his serve 5 times and he saved 62% of the break points that he conceded. Sperle broke his opponent 3 times with a 60% conversion rate. Sperle conceded his serve 4 times and he saved 33% of the break points that he conceded.
| Palosi | |||
| Q1 Ujvary |
Total | ||
|---|---|---|---|
| Score | 7-65 7-60 | ||
| Tot Set | 2 | 2 | |
| Tot Games | 26 | 26 | |
| pts | 97-91 | 97-91 | |
| Total points | 188 | 188 | |
| Winners | 46 | 46 | |
| %Winners | 47% | 47% | |
| SERVE | |||
| Aces | 1 | 1 | |
| Double Faults | 2 | 2 | |
| 1st in | 78/102 | 78/102 | |
| % 1st in | 76% | 76% | |
| 1st pts | 46/78 | 46/78 | |
| % 1st pts | 59% | 59% | |
| 2nd pts | 12/24 | 12/24 | |
| % 2nd pts | 50% | 50% | |
| Breaks | |||
| Won | 5 | 5 | |
| Converted | 5/9 | 5/9 | |
| Converted % | 56% | 56% | |
| Conceded | 13 | 13 | |
| Saved | 8/13 | 8 | |
| Saved % | 62% | 62% | |
| Times Broken | 5 | 5 | |
| Sperle | |||
| Q1 Popovic |
Total | ||
|---|---|---|---|
| Score | 1-6 7-63 6-1 | ||
| Tot Set | 3 | 3 | |
| Tot Games | 27 | 27 | |
| pts | 87-77 | 87-77 | |
| Total points | 164 | 164 | |
| Winners | 31 | 31 | |
| %Winners | 36% | 36% | |
| SERVE | |||
| Aces | 3 | 3 | |
| Double Faults | 0 | 0 | |
| 1st in | 43/79 | 43/79 | |
| % 1st in | 54% | 54% | |
| 1st pts | 31/43 | 31/43 | |
| % 1st pts | 72% | 72% | |
| 2nd pts | 19/36 | 19/36 | |
| % 2nd pts | 53% | 53% | |
| Breaks | |||
| Won | 3 | 3 | |
| Converted | 3/5 | 3/5 | |
| Converted % | 60% | 60% | |
| Conceded | 6 | 6 | |
| Saved | 2/6 | 2 | |
| Saved % | 33% | 33% | |
| Times Broken | 4 | 4 | |
Head 2 Head
WWWWWWWWWW
WWWWWWWWWW 
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