The Boston Celtics are facing a pivotal moment. As they prepare for a decisive Game 7 against the Philadelphia 76ers, all eyes are on head coach Joe Mazzulla. Is his job on the line if the Celtics crash out of the playoffs once again?

Let's be clear: Joe Mazzulla has been nothing short of dominant during the regular season. In his four years at the helm, the Celtics have won at least 56 games every single season and have never finished lower than the No. 2 seed in the Eastern Conference. His intensity, preparation, and attention to detail are undeniable. His system—relentless defense paired with a ruthless hunt for the best possible shot, usually a three-pointer—has worked wonders from October through April.

But the playoffs tell a different story. Mazzulla's teams have consistently underachieved when the stakes are highest, often blowing big leads and losing a shocking number of home games. In fact, during his four seasons, the Celtics have lost 12 postseason home games where they were favored by at least 7.5 points. That's a staggering number for a team with championship aspirations.

Adjustments have also been a challenge. We saw it last year against the New York Knicks, and we're seeing it again this year against the 76ers. When the game plan needs to shift on the fly, the Celtics have often struggled to respond.

Since 2022, Boston has reached three Eastern Conference Finals, two NBA Finals, and won a title. That's impressive. But during that same span, they've also lost playoff games at home as heavy favorites—including a -13.5 point spread against the 76ers in Game 2 of the first round this year, and a -10.5 spread in Game 5 of that same series.

This context is why the current situation feels so precarious. If the Celtics lose Game 7 on Saturday, it will mark the first time in franchise history they've blown a 3-1 series lead. That's not just a loss—that's a historic collapse. And for a team that entered the playoffs heavily favored to win both this series and the Eastern Conference, it would be a humiliating outcome.

Mazzulla's job is probably safe—after all, Boston wasn't even supposed to make the postseason this year in some eyes. But his playoff track record is becoming a real concern. Yes, he won it all in 2024, but that run was fueled by a stacked roster and an unusual amount of injury luck in the Eastern Conference playoffs. It was, by many accounts, an easy path to the title. When his teams have been truly challenged, they keep falling short.

If that happens again on Saturday, Mazzulla will have a lot of questions to answer. And the seat? It might get a little warmer.