If the New York Knicks lose Game 6, all their outstanding work in the first few games could be undone. They are in a precarious position, with the Boston Celtics on the edge of an unprecedented comeback.

The Celtics would have to stage that rare comeback without their best player in Tatum, who suffered a torn Achilles at the end of Game 4. His teammates stepped up in his absence Wednesday, with Derrick White scoring 34 points and Jaylen Brown adding 26 points and a postseason career-high 12 assists.