Williams knocked Boston's Rajon Rondo to the floor with 9:09 left in the third period of the Celtics' 99-65 victory on Sunday.
Williams, trying to prevent a breakaway basket by Rondo, put an arm across Rondo's chest and knocked the guard to the floor. Rondo lay for a few minutes while Celtics coaches and teammates checked on him.
After reviewing the play, officials threw Williams out of the game.
Williams said he didn't try to hurt Rondo.
``I saw it on TV and it did look pretty bad, so I can't argue that at all,'' Williams said Sunday. ``I just want Rondo to know that I would never try to hurt him.''
Williams will serve the suspension without pay.
Marvin Williams, center, seen here in a game played earlier this season, was suspended for the first game of next season for a flagrant foul committed in the Hawks' Game 7 loss to Boston on Sunday.
http://accesswdun.com/article/2008/5/209752