Smith suffered a season-ending torn Achilles in Monday's win over Brooklyn, ESPN's Shams Charania reports.
Smith is part of the starting lineup for Saturday's game against the Magic.
Smith closed with seven points (2-4 FG, 1-2 3Pt, 2-2 FT), two assists and six steals over 31 minutes before fouling out of Monday's 125-124 overtime loss to Detroit.
Smith totaled 11 points (3-7 FG, 1-3 3Pt, 4-6 FT), three rebounds, three assists and one steal across 34 minutes during Thursday's 114-104 win over Toronto.
Smith (knee) will suit up for Wednesday's game at the Hornets.
Smith (knee) is probable for Wednesday's game against the Hornets.
Smith (knee) has been ruled out for Tuesday's game against the Bucks.
Smith (knee) is questionable for Tuesday's game against the Bucks.
Smith (knee) won't play in Sunday's game against Dallas.
Smith didn't participate in Friday's practice due to a swollen knee, Ira Winderman of the South Florida Sun Sentinel reports.