The Boston Celtics, to a greater degree than any team in NBA history, embody the "live by the 3, die by the 3" mantra. For the most part, the reigning champs live damn well. But man, did they die in historic fashion on Monday night,

The Knicks were the definition of resilient — they could have rolled over down 20 but didn’t. With a 20-6 run in the second half of the third quarter, New York stormed back to make it a game. Jalen Brunson was doing his own matchup hunting, going at Al Horford, and it worked.

Kendrick Perkins, a former NBA champion and Boston player himself, spoke out on "First Take" with a stern warning to the Celtics before Game 2. "If [the Celtics] go down 0-2, this series is over with," he said boldly.