The Boston Celtics had to be feeling good at halftime Tuesday night.
They had just played a great first half in Game 4 of the Eastern Conference finals against the Cleveland Cavaliers, and LeBron James already was in foul trouble with the C’s leading by 10 at the break.
“I thought we played as well as maybe we have the entire playoffs during the first half,” Celtics coach Brad Stevens told reporters afterward.
But that good feeling was a fleeting one. The Cavs erased what once was a 16-point deficit and charged to a 112-99 win at Quicken Loans Arena. And with the win, they took a 3-1 series lead and moved one victory away from reaching …