Philadelphia 76ers coach Doc Rivers admitted Joel Embiid is playing through pain after leading his side to a 127-111 Game 3 victory over the Atlanta Hawks in their Conference semi-final series.

Embiid scored 27 points, with nine rebounds and eight assists for the 76ers who claimed a 2-1 lead in the series with a crucial road win.

The 2021 NBA MVP runner-up has been battling knee soreness for the latter part of the season and suffered a small lateral meniscus tear in his right knee in Game 4 of the series against the Washington Wizards, missing Game 5.

"He's playing hard. He's giving us everything," Rivers said during his post-game video conference.

"What he's doing is incredible. He is going through a lot, I'll tell you that. It's been great to watch."

Rivers added praise for the 27-year-old Cameroonian, who defensively also had three blocks and a steal, to go with his 27 points in Game 3 against Hawks center Clint Capela.

"He was great. He was patient," Rivers said. "They were going to send two-three guys on him all night.

"I thought overall he kept his patience. We've got to do a little better job on our spacing so he can see guys better but overall I thought our movement, 10 turnovers for the game, told the story."

The Sixers lost starting forward Danny Green after only four minutes to injury and Rivers said the outlook was not positive for the 33-year-old who won NBA titles in 2019 with the Toronto Raptors and 2020 with the Los Angeles Lakers.

"I have no idea [of the extent]. It's a calf injury," Rivers said. "My doctors will tell you calf injuries aren't great."

Rivers also offered praise to Australian guard Ben Simmons for his role in nullifying Hawks guard Trae Young who scored 28 points, shooting at 52.9 per cent from the field.

"It's been big. It's exhausting when you think about what we're asking Ben to do, follow Trae around and push the ball up the floor with pace," Rivers said.

"It's tough, he's young, he has endurance, he's been good for us."