The Boston Celtics entered their Eastern Conference semifinal against the New York Knicks as overwhelming favorites to advance. In each of the first two games of the series, the Celtics led by at least 20. Both contests were in Boston. And somehow, after the Knicks stormed all the way back to win 91-90 on Wednesday, the underdog is up 2-0.

Not only do the Celtics need to climb out of a 2-0 series deficit, but there's more recent history that they need to overcome.

What is wrong with the Boston Celtics to cause them to drop two games to the New York Knicks to start their 2025 NBA Eastern Conference Semifinals second round series? Not only that, but they lost the contests on their own home court of TD Garden after being up in the second half of the game by as much as 20 points.