Duje Ajdukovic and Ji Sung Nam will square off in the qualifications of the Kobe Challenger for the 1st time in their career. They are scheduled to compete on Monday at 1:30 pm on COURT C. 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 Duje Ajdukovic who should win in 2 sets.
Duje Ajdukovic -> 1.29
Ji Sung Nam -> 3.2
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Prediction and head to head Duje Ajdukovic vs. Ji Sung Nam
There is no head to head record between Duje Ajdukovic and Ji Sung Nam since this will be the first time that they will play each other in the main tour.
Duje Ajdukovic
24 - 28win/loss
321
105
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 24-29 | 9-9 | 13-16 | 2-1 | 0-3 | 0-0 |
| 2024 | 38-31 | 18-13 | 13-10 | 7-5 | 0-3 | 0-0 |
| 2023 | 59-25 | 2-1 | 50-21 | 7-3 | 0-0 | 0-0 |
| 2022 | 27-31 | 0-1 | 22-23 | 3-4 | 2-3 | 0-0 |
| 2021 | 33-31 | 1-1 | 29-23 | 3-7 | 0-0 | 0-0 |
Ranked no. 322, Duje reached the qualifications after defeating Nathan Trouve 7-6(4) 6-3.
In the qualifications, Ajdukovic had a good straight sets win against Trouve (7-64 6-3). During the match, Ajdukovic scored 68 points vs Trouve’s 56. Ajdukovic was quite aggressive to blast 34 winners.
Talking about the service games, Ajdukovic fired 5 aces and he committed only 2 double faults. Duje Ajdukovic was very efficient on serve to win 89% (34/38) of his 1st serve and 61% (17/28) on the second serve. This was the main reason for not conceding a single break during the match. Duje broke Trouve once after converting 50% of his break points (1/2).
Ajdukovic has a winning match record in the last 8 years having won 59% of his matches (286-196). 2-0 on indoor hard courts in 2025. Regarding his performance on the same surface of this competition, Ajdukovic has an aggregate24-20 record in the last 8 years on indoor hard courts.
The Croatian’s best result of the year was reaching the final in the Como Challenger.
Duje has an overall 24-28 win-loss record in 2025, 2-0 on indoor hard courts (See FULL STATS).
Previously in the Kobe Challenger
Ji Sung Nam
21 - 14win/loss
692
236
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 23-16 | 18-12 | 0-1 | 5-3 | 0-0 | 0-0 |
| 2024 | 14-21 | 12-10 | 2-4 | 0-1 | 0-6 | 0-0 |
| 2023 | 15-20 | 13-15 | 2-4 | 0-1 | 0-0 | 0-0 |
| 2022 | 26-19 | 24-13 | 2-4 | 0-2 | 0-0 | 0-0 |
| 2021 | 4-7 | 2-6 | 0-0 | 1-1 | 1-0 | 0-0 |
Ranked no. 765, Ji got to the qualifications after defeating Tsung-Hao Huang 6-2 6-3.
In the qualifications, Ji had a good straight sets win against Huang (6-2 6-3). During the match Sung Nam scored 64 points vs Huang’s 43. The Korean was extremely aggressive to blast 18 winners.
About the serving games, Sung Nam scored 5 aces and he was quite steady in conceding no double faults for the entire match. Ji Sung Nam was quite efficient on serve to win 95% (18/19) of his 1st serve and 63% (15/24) on the second serve. This was the main reason for not conceding a single break during the match. Sung Nam broke Huang 4 times after converting 50% of his break points (4/8).
Ji’s best result of the current season was getting to the final in M15 Daegu.
Sung Nam has an overall 21-14 win-loss record in 2025, 4-2 on indoor hard courts (See FULL STATS).
H2H Performance in the tournament
Matches, sets, games and points
| Points | Ajdukovic | Sung Nam |
|---|---|---|
| Match played | 1 | 1 |
| Tot Set | 2 | 2 |
| Tot Games | 22 | 17 |
| Pts | 68-56 | 64-43 |
| Total Points | 124 | 107 |
| Winners | 34 | 18 |
| %Winners | 50% | 28% |
Both Ajdukovic and Sung Nam played 1 match. Also both players started their run from the qualifications.Both players have not surrendered a single set in this event so far. Talking about their workload, Ajdukovic and Sung Nam have played the same amount of sets 2. However, Ajdukovic played 5 games more than Sung Nam. Duje scored 34 winners (50% of the total points). On the other side, Ji blasted 18 winners (28%).
Serve Performance
| Serve | Ajdukovic | Sung Nam |
|---|---|---|
| Aces | 5 | 5 |
| Avg per match | 5 | 5 |
| 1st in | 38/66 | 19/43 |
| %1st in | 58% | 44% |
| 1st pts | 34/38 | 18/19 |
| %1st pts | 89% | 95% |
| 2nd pts | 17/28 | 15/24 |
| %2nd pts | 61% | 63% |
Ajdukovic fired 5 aces . Sung Nam struck 5 aces . Ajdukovic won 89% points on his first serve. He quite strong on his second serve to win 61% of the points. On the other side, Sung Nam won 95% of the points on his first serve. He had a solid display on his second serve to win 63% of the points.
How they played the important points
| Breaks | Ajdukovic | Sung Nam |
|---|---|---|
| Won | 1 | 4 |
| Converted | 1/2 | 4/8 |
| % Converted | 50% | 50% |
| Conceded | 4 | 0 |
| Saved | 4 | 0 |
| % Saved | 100% | 0% |
| Times Broken | 0 | 0 |
Ajdukovic broke his opponent once with a 50% conversion rate. Duje pretty solid on his serve as he has never dropped a single service game after saving 4 break points. The Korean broke his opponent 4 times with a 50% conversion rate. Ji was rock solid on his serve as he has never conceded a single service game after saving 0 break points.
| Ajdukovic | |||
| Q1 Trouve | Total | ||
|---|---|---|---|
| Score | 7-64 6-3 | ||
| Tot Set | 2 | 2 | |
| Tot Games | 22 | 22 | |
| pts | 68-56 | 68-56 | |
| Total points | 124 | 124 | |
| Winners | 34 | 34 | |
| %Winners | 50% | 50% | |
| SERVE | |||
| Aces | 5 | 5 | |
| Double Faults | 2 | 2 | |
| 1st in | 38/66 | 38/66 | |
| % 1st in | 58% | 58% | |
| 1st pts | 34/38 | 34/38 | |
| % 1st pts | 89% | 89% | |
| 2nd pts | 17/28 | 17/28 | |
| % 2nd pts | 61% | 61% | |
| Breaks | |||
| Won | 1 | 1 | |
| Converted | 1/2 | 1/2 | |
| Converted % | 50% | 50% | |
| Conceded | 4 | 4 | |
| Saved | 4/4 | 4 | |
| Saved % | 100% | 100% | |
| Times Broken | 0 | 0 | |
| Sung Nam | |||
| Q1 Huang | Total | ||
|---|---|---|---|
| Score | 6-2 6-3 | ||
| Tot Set | 2 | 2 | |
| Tot Games | 17 | 17 | |
| pts | 64-43 | 64-43 | |
| Total points | 107 | 107 | |
| Winners | 18 | 18 | |
| %Winners | 28% | 28% | |
| SERVE | |||
| Aces | 5 | 5 | |
| Double Faults | 0 | 0 | |
| 1st in | 19/43 | 19/43 | |
| % 1st in | 44% | 44% | |
| 1st pts | 18/19 | 18/19 | |
| % 1st pts | 95% | 95% | |
| 2nd pts | 15/24 | 15/24 | |
| % 2nd pts | 63% | 63% | |
| Breaks | |||
| Won | 4 | 4 | |
| Converted | 4/8 | 4/8 | |
| Converted % | 50% | 50% | |
| Conceded | 0 | 0 | |
| Saved | 0/0 | 0 | |
| Saved % | – | 0% | |
| Times Broken | 0 | 0 | |
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