It might sound weird to describe a team featuring Evan Mobley and Jarrett Allen as small, but take a look at the rest of the Cleveland Cavaliers' depth chart these days.
Cleveland's guard and wings are, on the whole, shorter than league average, especially since the Cavs acquired Dennis Schroder and Keon Ellis at the deadline. Ellis at 6-foot-4 has good size for a guard, but Cleveland's been playing Ellis at the 3 in a lot of lineups, which makes him suddenly undersized.
The Cavs' recent loss to the Boston Celtics, an Eastern rival with good positional size outside of Payton Pritchard, exposed Cleveland's size problem.