The Pacers beat the Milwaukee Bucks 129-103, with the Bucks losing point guard Damian Lillard to a non-contact injury.
The 34-year-old, who has recently returned from a blood clot in his right calf, hurt his left leg in the first quarter and will have an MRI scan on Monday.
The Knicks edged out the Detroit Pistons 94-93, but there was controversy at the end when the Pistons’ Tim Hardaway Jr missed what would have been a winning shot at the buzzer with no foul called as he was knocked by Josh Hart.
In the Western Conference first-round series the Los Angeles Lakers fell to a 113-116 defeat by the Minnesota Timberwolves.
Luka Doncic scored 38 points and LeBron James 27 for the Lakers, but they will have to rally from 3-1 down when they host game five on Wednesday.