Smith received treatment on the ankle Monday and the team is hopeful he will be able to go in Game 2 against Indiana on Wednesday.
Smith was out with a sore knee.
The impending free agent only added six boards and four assists and remains a mixed bag in fantasy play.
Smith also had four steals and four assists, but it wasn't enough to give the Hawks the victory they needed to clinch a playoff spot on Monday. He's averaging 18.6 points on 51.5 percent shooting in seven games since missing one with a sprained knee.
Smith just missed a third straight double-double.
Smith missed his last game with a sprained knee.
Smith has double doubles in eight of 13 games.
Smith, the Hawks' leading scorer who becomes an unrestricted free agent after the season, was not traded before Thursday's trade deadline despite talks with the Milwaukee Bucks and other teams.
Smith also came up with a season best-tying three steals and three blocks. He's scored at least 20 points in four of his last six games after failing to reach that mark in his previous five.
Smith had a season-high 31 points against Detroit on Dec. 26 but had 20 or more only four other times in his previous 21 games.
Do you have improvements to suggest for this page?