Doc Rivers is day-to-day.
The official Celtics twitter account noted that Rivers missed Monday’s Celtics practice to have a minor throat operation on Sunday. That is to relieve pressure on his vocal chords, according to Chris Mannix at Sports Illustrated.
Lawrence Frank ran the practice for the Celtics.
Rivers could be back at practice as soon as Tuesday. He may be yelling a little less than normal, but that would be just fine. Kevin Garnett will pick up the slack there anyway.