Smart didn't practice on Sunday as a precaution due to a left index finger sprain, Mark Murphy of the Boston Herald reports.
EDGE Analysis
Smart's precautionary rest likely came about due to Avery Bradley (hamstring) being doubtful for the rest of the Celtics series against the Hawks. Smart is a top candidate to fill up Bradley's minutes while he recovers. His injury isn't serious, so owners have nothing to worry about as of now.