The Kinoshita Group Japan Open 2025, an ATP 500 tournament with great international appeal, will take place from 22 to 30 September at the Ariake Tennis Park in Tokyo, on hard courts. An event on the calendar since 1973, it is considered one of the main Asian events on the men's circuit, having concluded successfully in 2024 and ready to propose the formula with a main draw of 32 players and 16 doubles pairs again this year. The tournament will host a very high-level cast. Among the protagonists is the world number 2 Carlos Alcaraz, at his first participation in the Japan Open but highly anticipated after the choice to bypass the China Open to include Tokyo in his calendar. Alcaraz arrives in Tokyo after having had an excellent start to the season, crowned by the success at Roland Garros 2025 and by a confirmation of his solidity on clay. Alongside the young Spaniard will be established champions such as Stefanos Tsitsipas, Casper Ruud and Hubert Hurkacz, names that kept the tournament high last year. There will also be emerging stars such as Ben Shelton, Felix Auger-Aliassime and Holger Rune, who add further reasons to wait for the scheduled challenges. Among the participants is also the Italian tennis player Matteo Berrettini, former top-10 and semifinalist in Paris in 2023, ready to face top-level opponents. The competition will see different playing styles and strategies pitted against each other on a court that favors power and speed, fundamental characteristics on the hard courts of the Ariake Coliseum. The main facility, known for its retractable roof and a capacity of over 10.000 seats, guarantees a show even in case of rain, thanks to a technologically advanced covering. The tournament is held with canonical ATP formulas: singles best of three sets and doubles with tie-break match in the third set, together with qualifications played in the previous days. The Japan Open combines the competition on the court with an impeccable organizational structure, with extensive media coverage and the presence of an attentive and competent Japanese public. The choice to host Alcaraz, together with a group of global champions, further enhances the international scope of the event and promises duels of a level close to the great events of the circuit.