Russians Ekaterina Alexandrova and Veronika Kudermetova looked in sharp form during their straight-sets first-round wins.
Norrie beat Dane Holger Rune in three sets.
Ben Simmons had filed a grievance against the Philadelphia 76ers after they withheld pay due to his continued absence in the 2021-22 season.
Marcus Peters tore his ACL in September, and has finally received the all-clear to begin his return to practice.