1challenge.atpworldtour.com's availability checks had carried out over the past 599 days, starting on May 22, 2023. As of January 10, 2025, challenge.atpworldtour.com was encountering issues or unable to be reached during all the tests conducted. All testing performed of challenge.atpworldtour.com as of January 10, 2025, found zero instances of inoperability. Of the 1 error responses, the one dated May 22, 2023, carried the most recent error code, 403. Challenge.atpworldtour.com has an average response time of 0.522 seconds, and on May 22, 2023, it was 0.522 seconds.