Jrue Holiday is on the mend from a sprained shoulder, but the Celtics have no need to rush him back

But Jrue Holiday said Friday that his absence is about more than simply being cautious. The point guard missed his third consecutive game Friday due to a sprained right shoulder joint he says he suffered when he was hit on a screen during the Celtics’ win over the Wizards on Sunday , and he told the Globe he has been experiencing “dead arm.” DETROIT — The Celtics entered Friday night’s game against the Pistons with a 10½-game lead over the second-place Bucks with just 13 games remaining. They will eventually...