Aleksandar Vukic and Rei Sakamoto will face off in the qualifications of the Japan Open Tennis Championships for the 1st time in their career. They are scheduled to play on Tuesday at 11:00 am on COLOSSEUM. In this post, we analyze their head to head performance and prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Aleksandar Vukic who should win in 3 sets.
Aleksandar Vukic -> 1.54
Rei Sakamoto -> 2.35
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Prediction and head to head Aleksandar Vukic vs. Rei Sakamoto
There is no head to head record between Aleksandar Vukic and Rei Sakamoto since this will be the first time that they will fight against each other in the main tour.
Aleksandar Vukic
21 - 31win/loss
82
48
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 29-38 | 15-20 | 4-8 | 5-5 | 5-5 | 0-0 |
| 2024 | 34-36 | 13-18 | 5-9 | 6-2 | 10-7 | 0-0 |
| 2023 | 48-33 | 34-20 | 9-4 | 1-3 | 4-6 | 0-0 |
| 2022 | 30-25 | 14-15 | 4-5 | 12-5 | 0-0 | 0-0 |
| 2021 | 34-26 | 8-5 | 10-11 | 11-7 | 5-3 | 0-0 |
Ranked no. 93, Aleksandar reached the qualifications after defeating Aleksandar Kovacevic 6-4 6-7(4) 6-2.
In the qualifications, The Australian defeated Kovacevic (6-4 6-74 6-2). During the match, Vukic scored 97 points vs Kovacevic’s 81. The Australian was very aggressive to blast 42 winners.
Talking about the service games, Vukic overpowered his opponent with 21 aces and he committed only 1 double fault. Aleksandar Vukic was very efficient on serve to win 82% (42/51) of his 1st serve and 66% (21/32) on the second serve. This was the main reason for not conceding a single break during the match. The Australian broke Kovacevic 3 times after converting 75% of his break points (3/4).
Vukic has good match record in the last 10 years having won 54% of his matches (275-233). 11-17 on hard in 2025. In connection with his performance on the same surface of this tournament, Vukic has a composed 144-123 match record in the last years on hard.
Aleksandar’s best result of the current year was reaching the semifinal in the Estoril Challenger.
Vukic has an aggregate 21-31 win-loss record in 2025, 11-17 on hard (See FULL STATS).
Previously in Tokyo
Rei Sakamoto
25 - 20win/loss
176
174
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 30-26 | 23-16 | 3-3 | 4-7 | 0-0 | 0-0 |
| 2024 | 20-16 | 12-11 | 6-3 | 2-2 | 0-0 | 0-0 |
| 2023 | 7-11 | 1-4 | 5-5 | 1-2 | 0-0 | 0-0 |
| 2022 | 5-6 | 5-3 | 0-3 | 0-0 | 0-0 | 0-0 |
Ranked no. 189 (career-high), the Japanese reached the qualifications after defeating Adam Walton 6-2 6-4.
In the qualifications, Rei had a good straight sets win against Walton (6-2 6-4). During the match Sakamoto scored 66 points vs Walton’s 45. Sakamoto was very aggressive to blast 23 winners.
Talking about serving, Sakamoto managed to score 7 aces and he was exceptionally steady in conceding no double faults for the entire match. Rei Sakamoto was quite efficient on serve to win 85% (23/27) of his 1st serve and 74% (14/19) on the second serve. This was the main reason for not conceding a single break during the match. Sakamoto broke Walton 3 times after converting 60% of his break points (3/5).
His best result of the current season was winning the title the Cary Challenger where he overcame Liam Draxl in the final 6-1 6-4.
Rei has an overall 25-20 win-loss record in 2025, 20-14 on hard (See FULL STATS).
Previously in Tokyo
Previously, his best result was reaching the qualifications in 2024. See his history.
H2H Performance in the tournament
Matches, sets, games and points
| Points | Vukic | Sakamoto |
|---|---|---|
| Match played | 1 | 1 |
| Tot Set | 3 | 2 |
| Tot Games | 31 | 18 |
| Pts | 97-81 | 66-45 |
| Total Points | 178 | 111 |
| Winners | 42 | 23 |
| %Winners | 43% | 35% |
Both Vukic and Sakamoto played 1 match. Also both players started their run from the qualifications.At the moment, Aleksandar Vukic surrendered 1 set while Rei Sakamoto hasn’t conceded a set so far. Vukic has played 1 set more than Sakamoto (3 vs 2). Therefore, Vukic played 13 games more than Sakamoto. Aleksandar scored 42 winners (43% of the total points). On the other side, Sakamoto bagged 23 winners (35%).
Serve Performance
| Serve | Vukic | Sakamoto |
|---|---|---|
| Aces | 21 | 7 |
| Avg per match | 21 | 7 |
| 1st in | 51/83 | 27/46 |
| %1st in | 61% | 59% |
| 1st pts | 42/51 | 23/27 |
| %1st pts | 82% | 85% |
| 2nd pts | 21/32 | 14/19 |
| %2nd pts | 66% | 74% |
Vukic scored 21 aces . Sakamoto scored 7 aces . Vukic won 82% points on his first serve. He very solid his second serve to win 66% of the points. On the other side, Sakamoto won 85% of the points behind his first serve. He had a solid display on his second serve to win 74% of the points.
How they played the important points
| Breaks | Vukic | Sakamoto |
|---|---|---|
| Won | 3 | 3 |
| Converted | 3/4 | 3/5 |
| % Converted | 75% | 60% |
| Conceded | 0 | 1 |
| Saved | 0 | 1 |
| % Saved | 0% | 100% |
| Times Broken | 0 | 0 |
Aleksandar broke his opponent 3 times with a 75% conversion rate. Vukic pretty solid on his serve as he has never conceded a single service game after saving 0 break points. The Japanese broke his opponent 3 times with a 60% conversion rate. Rei was rock solid on his serve as he has never conceded a single service game after saving 1 break points.
| Vukic | |||
| Q1 Kovacevic | Total | ||
|---|---|---|---|
| Score | 6-4 6-74 6-2 | ||
| Tot Set | 3 | 3 | |
| Tot Games | 31 | 31 | |
| pts | 97-81 | 97-81 | |
| Total points | 178 | 178 | |
| Winners | 42 | 42 | |
| %Winners | 43% | 43% | |
| SERVE | |||
| Aces | 21 | 21 | |
| Double Faults | 1 | 1 | |
| 1st in | 51/83 | 51/83 | |
| % 1st in | 61% | 61% | |
| 1st pts | 42/51 | 42/51 | |
| % 1st pts | 82% | 82% | |
| 2nd pts | 21/32 | 21/32 | |
| % 2nd pts | 66% | 66% | |
| Breaks | |||
| Won | 3 | 3 | |
| Converted | 3/4 | 3/4 | |
| Converted % | 75% | 75% | |
| Conceded | 0 | 0 | |
| Saved | 0/0 | 0 | |
| Saved % | – | 0% | |
| Times Broken | 0 | 0 | |
| Sakamoto | |||
| Q1 Walton | Total | ||
|---|---|---|---|
| Score | 6-2 6-4 | ||
| Tot Set | 2 | 2 | |
| Tot Games | 18 | 18 | |
| pts | 66-45 | 66-45 | |
| Total points | 111 | 111 | |
| Winners | 23 | 23 | |
| %Winners | 35% | 35% | |
| SERVE | |||
| Aces | 7 | 7 | |
| Double Faults | 0 | 0 | |
| 1st in | 27/46 | 27/46 | |
| % 1st in | 59% | 59% | |
| 1st pts | 23/27 | 23/27 | |
| % 1st pts | 85% | 85% | |
| 2nd pts | 14/19 | 14/19 | |
| % 2nd pts | 74% | 74% | |
| Breaks | |||
| Won | 3 | 3 | |
| Converted | 3/5 | 3/5 | |
| Converted % | 60% | 60% | |
| Conceded | 1 | 1 | |
| Saved | 1/1 | 1 | |
| Saved % | 100% | 100% | |
| Times Broken | 0 | 0 | |
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