Smart will get the start at point guard Sunday against the Heat. With Rajon Rondo no longer in the picture, coach Brad Stevens will shake up the lineup, giving Smart his first NBA start. The rookie will join Avery Bradley in the backcourt, with Jeff Green, Jared Sullinger and Tyler Zeller comprising the froncourt. After missing a pair of games with an Achilles injury, Smart had eight points and four assists in 27 minutes against the wolves on Friday.