The Phoenix Suns lost Devin Booker to a hamstring injury as they were stunned 125-114 by the New Orleans Pelicans who squared up their first-round playoffs series.

Brandon Ingram scored 37 points, including 26 in the second half, with 11 rebounds and nine assists, while CJ McCollum added 23 points including six three-pointers.

But the hamstring injury to Suns All-Star guard Booker was the major talking point, leaving the Western Conference's top seed severely weakened if he is out for an extended period.

The Suns were leading 61-56 at half-time with Booker having scored 31 first-half points including shooting seven-of-11 from three-point range, before he left the game in the third quarter and did not return.

Chris Paul could not lift the Suns in Booker's absence, finishing with 17 points and 14 rebounds, while Mikal Bridges added 19 points.

Butler on fire as Heat win

Jimmy Butler scored 45 points with 15-of-25 shooting from the field as the Miami Heat claimed a 2-0 lead in their series against the Atlanta Hawks with a 115-105 win.

The Heat went on an 11-0 run the third quarter to open up the game-winning lead led by Butler while Tyler Herro (15 points) and Max Strus (14 points) contributed well.

Trae Young, coming off a playoff career-low display, managed 25 points for the Hawks with Bogdan Bogdanovic landing five triples in his 29-point haul.

Grizzlies claim franchise-best playoff win

The Memphis Grizzlies overcame a Ja Morant injury scare as they levelled their series against the Minnesota Timberwolves with a 124-96 victory.

Morant left the court in the third quarter after copping a knee to his left leg but returned, finishing with 23 points, nine rebounds and 10 assists. That was Morant's third career playoffs double-double.

The victory was the Grizzlies' largest in their franchise playoff history, despite Anthony Edwards' best efforts with 20 points and six rebounds for the Timberwolves.