ATP Challenger Tour on X: "Welcome back 👋 The October calendar has been released with South Korea 🇰🇷 & Japan 🇯🇵 returning to the #ATPChallenger Tour for the first time since 2019!
2019 Season: Week Week Starting City Current Tournament Name Surface | PDF | Recurring Sporting Events | Ball Games
![ZooTennis: ATP's First Quarter Calendar Released; BNP Paribas Open Postponed; Federer Out of Australian Open; UTR January $25K Deadlines Approaching; More on USTA Junior Structure Changes ZooTennis: ATP's First Quarter Calendar Released; BNP Paribas Open Postponed; Federer Out of Australian Open; UTR January $25K Deadlines Approaching; More on USTA Junior Structure Changes](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwG3MJ-vKGiZfh3mCM6aW7V_vhbzrw6kz6CZ-AUFielsGD5BPnkhKZoF9ySgWKYvpsYDqpO_8rfzDrXdskv39-Dvl4oj3RbyWIGHmff4cqXW7Gw9zN0kOSPIOnOwtTZ3QPlF49mw/s807/ATP_Announces_Updated_2021_Q1_Calendar___ATP_Tour___Tennis.png)