The group performed Thursday at Truist Park in Atlanta, Georgia, and Lee was only able to make it a few songs in before he made the announcement to the audience that that he had broken four ribs about two weeks ago.
It was news he had earlier shared on his verified Instagram account.
“But I’ve been resting and healing and even though the doctor tells me I shouldn’t play at all, you know I’m stubborn and I’ll beast through the pain every show for as many songs as I can,” he wrote in a statement posted.
According to the post, Black Sabbath drummer Tommy Clufetos would be subbing for Lee.
“We’ve all been waiting years for this moment and there’s no way I’m missing this!,” Lee wrote. “On with the show.”