NEW YORK—The Boston Celtics are used to seeing Jayson Tatum get up when he goes down, like he did after a hard fall that caused a wrist injury in the first round of the playoffs.
When he couldn’t get to his feet late in Game 4 of the Eastern Conference semifinals and had to be carried off the court, it was clear just how serious his lower right leg injury was, even before testing that won’t come until Tuesday.
