Losing key players to injury during the NBA playoffs is not uncommon; it happens every year. But it still hurts each time someone goes down.

Suddenly here we are, longing for those times when we thought the worst-case scenario for the Celtics meant falling behind ...

The Celtics blew a 14-point lead, then lost their best player to injury in a Game 4 loss to the Knicks that pushed Boston to ...

The worst possible outcome happened for the Boston Celtics on Monday night. And it’s not the Celtics heading back to TD Garden — where the Knicks won Games 1 and 2 — facing a 3-1 deficit. It’s that ...

Celtics star Jayson Tatum's injury in Game 4 against the New York Knicks had his teammates in a state of shock Monday.

Sometimes it makes sense, and this time, it didn’t make sense. … It’s weird, weird, weird, honestly. Super weird.” ...

Porzingis racked up seven points (2-6 FG, 0-2 3Pt, 3-6 FT), four rebounds and one steal in 24 minutes during Monday's 121-113 loss to the Knicks in Game 4 of the Eastern Conference Semifinals.

The Celtics will need a lot more from Kristaps Porzingis to keep their season alive after Jayson Tatum's injury in Game 4.

If Jayson Tatum is indeed out for Game 5 (and beyond), the Celtics' season could hinge on Kristaps Porzingis.

The somber atmosphere was about much more than the team falling down 3-1 in their series against the Knicks. Instead, the ...