Carlos Alcaraz comes into the Japan Open full of confidence after a great season. The World No. 1 recently won the US Open and is now looking strong on the Asian swing. In Tokyo, the Spaniard faced an injury scare in his opening match against Sebastián Báez but recovered to win in straight sets. He then beat Brandon Nakashima to reach the semifinals, reaffirming his position as this season’s standout player.
Casper Ruud has also been making his mark this week in Tokyo. The Norwegian, seeded fourth, got past Matteo Berrettini and Aleksandar Vukic to reach the semifinal. His big highlight came in Madrid, where he won his first Masters 1000 title. While knee problems have occasionally slowed him down, Ruud’s solid hard-court play has helped him stay competitive against top players.
Carlos Alcaraz vs Casper Ruud Match Details
Date:Â September 29, 2025
Tournament:Â Japan Open 2025
Round:Â Semifinal
Venue:Â Ariake Coliseum, Tokyo, Japan
Category:Â ATP 500
Surface:Â Outdoor Hard Court
Live Telecast: Tennis Channel, TVA, TSN, ESPN International
Alcaraz vs. Ruud Head-to-Head
Alcaraz and Ruud have met five times on the professional tour, with Alcaraz holding a 4–1 lead in their head-to-head. Their most recent match was at the 2024 Nitto ATP Finals in Turin, where Ruud pulled off a surprise straight-sets win over Alcaraz in 86 minutes.
Alcaraz vs. Ruud Prediction
Alcaraz’s numbers this year are outstanding: a 61-6 win-loss, 403 aces, 199 double faults, 74% of 1st serve points won, 57% of 2nd serve points won, and an 88% win rate on service games. These stats indicate his aggression on serve, willingness to go for his shots (high ace count), while still holding a high rate of service games.
Meanwhile, Ruud holds a 29-12 win-loss record, 225 aces, 94 double faults, 71% on 1st serve points, 53% on 2nd serve points, and an 82% win rate on service games. In comparison to his Spaniard’s consistent season, Ruud’s season has been uneven, especially highlighted by his struggles at the French Open, where he faced an early exit.
When looking closely at styles, Alcaraz is the risk-taker. His higher double-fault count (199) reflects how much he pushes his second serve, but he balances it with more aces and a better return game. The six-time Grand Slam champion is dangerous in short points, often dictating with his first forehand.
On the other hand, Ruud’s serve doesn’t give him as many free points, but sets up rallies where his fitness and heavy topspin can wear opponents down. However, bearing in mind the performance and recent results of these two, Alcaraz should be able to get over the line.
Prediction: Alcaraz to win in three sets
