NBA Power Rankings: Celtics, Nuggets, Grizzlies battle for No. 1; Lakers, Warriors in bottom 10; OKC rising | CBS Sports Headlines NBA Power Rankings: Celtics, Nuggets, Grizzlies battle for No. 1; Lakers, Warriors in bottom 10; OKC rising A lot has changed since our last set of rankings before Christmas … Continue reading NBA Power Rankings: Celtics, Nuggets, Grizzlies battle for No. 1; Lakers, Warriors in bottom 10; OKC rising