Power rankings: C's slide continues

The Boston Celtics dipped another spot to No. 6 in this week's ESPN.com NBA Power Rankings and are now buried behind the Lakers, Bulls, Heat, Mavericks and Spurs.

Writes curator Marc Stein: "One more time in case you haven't heard it: Friday's collapse against Charlotte marked the first time in Celts history that they fell to a team 10 or more games under .500 after leading by 10 or more to start the fourth." Yikes.

Elsewhere: C's at No. 8 in Hollinger's rankings | Boston dips to No. 7 in NBA.com poll