Williams, who is nursing a right wrist injury, rejoined the team in Orlando for Friday's game against the Magic. Williams, who has missed the past three games, had gone home to see his family while the Nets were in Cleveland Wednesday.
The Nets will face the Hawks in Atlanta on Saturday.
The 26-year-old All-Star is averaging 14.8 points and 13.1 assists in eight games with the Nets. However, he's shooting just 32.7 percent from the field and 28.6 percent from 3-point range.
Williams initially suffered the strained flexor tendon in his right shooting wrist Jan. 26, while he was a member of the Utah Jazz.
Doctors have told Williams that he will not need surgery, but will need three to six weeks of rest for the wrist to heal.
The Nets announced guard Sundiata Gaines is done for the season after fracturing his right hip Wednesday. He will be on crutches for six to eight weeks, then begin rehabilitation.
The Nets also will be without small forward Damion James (foot) for the next two games, The Record reported.
The Nets (23-47) have 12 games remaining in the regular season.
Mike Mazzeo is a regular contributor to ESPNNewYork.com.