CLEVELAND -- Approximately 36 hours of reflection did nothing to change the mind of Celtics coach Doc Rivers. He is demanding his team improve and play with more consistency or, yes, roster changes could be in store.

The Celtics did not practice Monday in Cleveland, only going through a film session at the team hotel. But Rivers addressed the media Tuesday morning for the first time since threatening trades after the Celtics’ 103-88 loss to the Detroit Pistons on Sunday night.