NBA Power Rankings: Nuggets rise, Knicks fall as we assign third-quarter grades

It's time to cram with fewer than 20 games left. Three teams, including the Lakers, get an A for their recent work.

NBA Power Rankings: Nuggets rise, Knicks fall as we assign third-quarter grades
It's time to cram with fewer than 20 games left. Three teams, including the Lakers, get an A for their recent work.