The Knicks rank 26th in the NBA in effective field goal % (51.2%), and the Celtics rank 14th in opponent eFG% (52.8%). The offense needs to find something against an average defense.
League average is 53.3%, so the Knicks are 2.1 points below it. Jalen Brunson leads them with 25.6 points a game on 53.8% true shooting.