Held during the second week of the BNP Paribas Open in Indian Wells, the Arizona Tennis Classic attracts a world-class field. The Challenger 175 category was introduced in 2023, with Phoenix serving as the inaugural host. Portugal's Nuno Borges is the two-time defending champion at the Phoenix Country Club, which opened in 1900. The state of Arizona previously hosted an ATP Tour event in nearby Scottsdale from 1986 to 2005.