Boston Celtics rookie guard Marcus Smart did not travel with the team to Atlanta in advance of Tuesday's game against the Hawks and will miss his 10th straight game since suffering a left ankle injury.

The team announced that Smart underwent a CT scan at New England Baptiste Hospital on Monday that came back negative. Stalled as he attempts to work his way back to game action, it would seem the imaging was precautionary to evaluate how the ankle is healing.

Smart suffered a severe sprain and bone bruising after stepping awkwardly on the foot of a defender in a game against the Indiana Pacers on Nov. 7. The team initially set a timeline of 2-3 weeks for his return, but Smart simply hasn't progressed enough to resume full-throttle activities.

Smart attempted to return to practice last Wednesday, but removed himself quickly after the ankle felt tender. Smart participated fully in the team's practice on Saturday, but it did not include 5-on-5 scrimmaging work.

"Some days I feel good, some days [the ankle] doesn’t,” Smart said on Friday. “I can’t really give you an exact date of when I’ll be back. I just know the way the progress is looking I’ll be back soon."

Added Smart: "“The type of player I am, I need to be able to cut with comfortably. We’re trying to make sure we can work those kinks out and get me able to cut right."

Asked about Smart before Sunday's game against the Spurs, Celtics coach Brad Stevens noted the guard was, "Better, but not well enough to play."

Asked if he would accompany the team on the trip to Atlanta, Stevens added, "The only way we’ll take him with us is if we expect him to play."

The Celtics are back home on Wednesday night to host the Pistons. The team said Smart would remain home to continue his conditioning and treatment the next two days.