ATLANTA — Boston Celtics guard Rajon Rondo has been suspended for Game 2 of the opening-round playoff series against the Atlanta Hawks.

The NBA announced its decision Monday, less than 24 hours after Rondo stuck out his chest to bump referee Marc Davis while complaining about a call in the final minute of Boston’s 83-74 loss in Game 1.

Rondo won’t be able to play Tuesday night in Atlanta when the Celtics try to even the series. The NBA’s assist leader scored 20 points and dished out 11 assists in the opener, leaving Boston with a huge hole in its lineup.

The Celtics already have been playing without shooting guard Ray Allen, who’s hobbling on a sore right ankle. Avery Bradley will likely move over to take Rondo’s place at the point.