What is going on with the Celtics that they would lose multiple home games to a ball club they swept -- and convincingly so -- in the regular season?

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.

In a surprising start to the second round of the NBA playoffs, the Boston Celtics find themselves trailing the New York Knicks 2-0 in their series. This comes after the Knicks rallied from 20-point deficits in the first two games to come away with a pair of narrow victories.