NBA Playoffs Odds Knicks Make History; Epic Comeback Against Celtics Shakes Up the NBA Betting Lines   New York Recovers from a 20-Point Deficit and Takes Control of the Series.   The New York Knicks shocked everyone on Monday night by overcoming a 20-point deficit and defeating the defending champions, the Boston Celtics, 108-105 in overtime in Game 1 of the Eastern Conference semifinals.