The Phoenix Suns are waiting to hear more on Devin Booker's hamstring injury, although coach Monty Williams insisted the NBA title favourites are ready for the "next man up".

After scoring 31 points in the first half of Tuesday's game against the New Orleans Pelicans, giving the Suns a 61-56 lead, Booker was held scoreless in the third quarter before going down injured.

The three-time All-Star, who has battled injury problems previously, left the floor and was unable to return.

"We'll have more information tomorrow," Williams told reporters. "We've played without Chris [Paul] and Book before. If we have to play without Book, next man up. We've done that all year long."

The Suns were 8-6 without Booker this year, 11-6 without Chris Paul and 3-3 when both were absent.

Paul continued on Tuesday to finish with 17 points and 14 assists but acknowledged the blow of Booker's injury.

"It is what it is, it's part of the game," he said. "He was killing, he was having a big-time game."

In Booker's absence, the Suns sensationally lost 125-114 as New Orleans levelled the first-round series at 1-1.

It was a historic win for the Pelicans, who became the first team in NBA history to beat 60-win opponents in the playoffs after themselves finishing the regular season at least 10 games under .500.

Brandon Ingram was the star of the show, with 37 points, 11 rebounds and nine assists.

"This was one of his best [games] and it was on the big stage," Pelicans coach Willie Green said of Ingram. "I'm proud of that young man. He works his tail off."

Ingram added: "Throughout this year I had confidence that we would be here.

"I didn't know what it would look like, but we continued to get better every single day with Willie being positive every single day and helping guys and teaching guys every single day."