Shintaro Mochizuki and Hugo Gaston will square off in the 1st round of the U.S. Open for the 3rd time in their career. They are scheduled to compete on Tuesday at 3:00 pm on Court 10. In the following lines you can find the head to head analysis and prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Shintaro Mochizuki who should win in 5 sets.

As per the initial odds, Shintaro Mochizuki is the pick to win this match.
Shintaro Mochizuki -> 1.68
Hugo Gaston -> 2.19

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Prediction and head to head Shintaro Mochizuki vs. Hugo Gaston

This will be the 3rd time that Shintaro Mochizuki and Hugo Gaston clash against each other. The head to head is 1-1 for Mochizuki and Gaston (see full H2H stats), but they have never played each other on hard.

The last time that they locked horns, Gaston won 7-6(5) 6-4 in the qualifications in at the Wimbledon back in 2024.

Shintaro Mochizuki

Shintaro Mochizuki

36 - 21win/loss

Hard
23-12
I Hard
0-0
Clay
2-6
Grass
11-3
Rank
94
High
92
LLLWLLWWLW
Year Total Hard Clay I.hard Grass Carpet
2025 43-31 27-16 2-6 3-6 11-3 0-0
2024 28-33 19-22 7-5 0-1 2-5 0-0
2023 41-33 22-16 13-8 2-5 4-4 0-0
2022 37-34 18-17 13-12 6-5 0-0 0-0
2021 35-30 11-10 18-11 5-7 1-1 0-1

Ranked no. 112 (career-high), Mochizuki got to the 1st round after defeating Jurij Rodionov 6-2 4-6 6-2, Roman Andres Burruchaga 6-4 1-6 6-4 and Daniel Elahi Galan 6-4 6-4.

In the qualifications, The Japanese had a good straight sets win against Elahi Galan Riveros (6-4 6-4). During the match, Mochizuki scored 74 points vs Elahi Galan Riveros’s 63. Mochizuki was quite aggressive to blast 27 winners.

Talking about the service games, Mochizuki bagged 6 aces and he committed only 4 double faults. Shintaro Mochizuki lost the serve once and he saved 7 break points. Furthermore, Mochizuki put 45% of his first serves in, winning 82% (27/33) of the points behind his 1st serve and 50% (20/40) on the 2nd serve. Shintaro broke Elahi Galan Riveros 3 times after converting 38% of his break points (3/8).

Overall Performance in this tournament

The Japanese started his run at this tournament from the qualifications. In the main draw, he has conceded 2 set in this event to conquer 52% of the points he played.

Mochizuki has a winning win-loss record in the last 8 years having won 55% of his matches (211-174). 23-12 on hard in 2025. In connection with his performance on the same surface of this competition, Mochizuki has an aggregate119-97 match record in the last 8 years on hard.

His best result of the current season was winning the title the Noumea Challenger where he beat Moerani Bouzige in the final 6-1 6-3.

The Japanese has an aggregate 36-21 win-loss record in 2025, 23-12 on hard (See FULL STATS).

Previously at the U.S. Open

U.S. Open
Mochizuki's Record

Hugo Gaston

Hugo Gaston

15 - 26win/loss

Hard
9-11
I Hard
0-0
Clay
6-14
Grass
0-1
Rank
98
High
58
LWWWWWWLWW
Year Total Hard Clay I.hard Grass Carpet
2025 30-31 9-12 6-14 15-4 0-1 0-0
2024 31-31 5-12 15-11 8-6 3-2 0-0
2023 45-32 6-5 30-18 8-6 1-3 0-0
2022 27-31 4-9 4-8 16-11 3-3 0-0
2021 44-30 2-3 32-16 10-10 0-1 0-0

Ranked no. 125, Gaston will start his run at the New York after he played his last match in Winston Salem where he lost 6-3 6-3 to Fucsovics in the 1st round on the 18th of August.

Hugo has a compiled 15-26 win-loss record in 2025, 9-11 on hard (See FULL STATS).

In terms of his career, Hugo has an overall 256-209 record. He has a negative 48-49 record on hard.

Previously at the U.S. Open

Previously, his best result was reaching the 2nd round in 2023. See his history.

U.S. Open
Gaston's Record

Tennis Scores – U.S. Open

Upcoming matches in the draw