Three things to look for as the Celtics try to bounce back in Game 3

Jayson Tatum expects more from himself. Photo by Brian Babineau/NBAE via Getty Images If you had told me before the series that the Celtics would blow a 20-point lead at some point, I would have believed you, shrugged my shoulders and nodded my head.

But if you had told me that it would happen in both Game 1 and Game 2 at TD Garden, and that Boston would be down 0-2 right now, my eyes would have bulged and I would have given you a double take.

It’s honestly pretty hard to fathom that a team this talented, and this cohesive, could squander such a sizable lead twice in a row, at home against the Knicks, in a span of three days. But hey, that’s life. What happened happened; it’s all about how…