The Celtics' 2-0 hole vs. Knicks is without precedent in the NBA playoffs

The second-seeded Boston Celtics are making all kinds of history in the Eastern Conference semifinals. None of it is good.Two days after blowing a 20-point lead in a humiliating loss to the third-seeded New York Knicks, the Celtics, well, they blew a 20-point lead Wednesday in a humiliating loss to the New York Knicks. It was an echo that defied belief, right up until Jayson Tatum's last-gasp drive culminated in a Mikal Bridges steal, the same way Game 1 ended. So now the Celtics are down 2