The Philadelphia 76ers still do not know if Joel Embiid will be able to return in Game 3 against the Miami Heat, as he still has "so many steps to go through".

Embiid has not played so far in the second-round series, in which the 76ers now trail 2-0 after another defeat on Wednesday.

Although Tyrese Maxey went off for 34 points, Heat center Bam Adebayo (23 points and nine rebounds) enjoyed another big night in Embiid's absence to inspire a 119-103 win.

The 76ers will hope to get on the board as they head home to Philadelphia, but they may again be without their MVP candidate, who suffered a facial fracture and concussion against the Toronto Raptors in round one.

Coach Doc Rivers could offer no assurances ahead of Game 3, as he told reporters: "I really don't know [if Embiid can play].

"We talked [on Tuesday], and we talked [on Wednesday]. He looked good, as far as talking.

"But he's got so many steps to go through, and I don't think he's cleared any of them right now. So, we just have to wait and see."

Despite the Heat's dominant start, coach Erik Spoelstra remains wary of the series-altering impact of a potential Embiid return.

"It changes dramatically," Spoelstra said. "You're talking about MVP talent, you know? So, we'll just have to see.

"We knew that this series was going to shift, and it was going to change pretty dramatically [if Embiid returns].

"It's better for it to change dramatically when we're able to get a couple wins, but yeah, he changes the equation quite a bit."