With the series pretty much at hand, Celtics coach Doc Rivers wants his team to remain as healthy as possible as it looks to move into the second round.  Which means, of course, that the Big Fella will be sitting until further notice. Via ESPN Boston: “Boston Celtics coach Doc Rivers ruled Shaquille O’Neal out for Sunday’s Game 4 of the Eastern Conference quarterfinals against the New York Knicks, noting the 39-year-old center simply is not ready for game action. O’Neal was present at Madison Square Garden on Saturday as the Celtics engaged in a walk-through after watching film at the team hotel. ‘He’s not playing [Sunday],’ said Rivers. ‘We didn’t do anything to see honestly. We didn’t practice, we just walked through. I’m not going to put him out on the floor.’