CM Punk, seen here in 2012, competes against Chris Jericho at WrestleMania XXVIII in Sun Life Stadium in Miami Gardens, Florida. (Marc Serota/AP)

Ex-pro wrestler turned UFC fighter CM Punk may be done with the WWE, but some in the promotion aren’t done with him. WWE’s ringside doctor Chris Amann filed a $1 million libel lawsuit against Punk (real name: Phil Brooks) and his friend Colt Cabana (real name: Scott Colton) on Thursday in response to comments the ex-sports entertainer made on Cabana’s podcast last year, according to court documents.

Punk alleged medical negligence on Cabana’s popular “Art of Wrestling” podcast in November, calling Amann “lazy” and noting he mistreated a concussion and neglected a cyst on Punk’s back, which Punk says eventually developed into a life-threatening MRSA staph infection. Punk alleged Amann only prescribed him generic antibiotics for his back, which did nothing to solve his problem and instead created additional issues. Punk said it was only after he left the company and sought care from an independent doctor that his condition was properly diagnosed.

Amann objects to those claims in the suit, which was filed Thursday in Illinois’s Cook County Circuit Court. Amann maintains he never treated Punk for a cyst on his back and that he has always followed WWE’s concussion protocol, which included once removing Punk from the ring during a match, the Chicago Tribune reports.

“We look forward to vindicating Dr. Amann’s reputation and restoring his good name,” Phillip Zisook, Amann’s attorney at Deutsch, Levy & Engel Chartered, told The Washington Post on Friday.

Amann and Punk declined to comment. Cabana could not be reached for comment.