Celtics Realize Defense Must Improve Going Forward (Video)

After yielding 120 points to the Miami Heat in their season opener, the Celtics know what part of their game needs to improve.

Although the Heat have a prolific offense and great speed, head coach Doc Rivers felt that the Celtics' defense was subpar, giving up far too much to a team equipped to take advantage. Like Rivers, the rest of the squad was taking responsibility for their deficiencies after the loss.

Check out the video above to hear what Rivers and Paul Pierce had to say about the D, in addition to a few words from Rondo on that hard foul on Dwyane Wade.