What happened: Vieira tested positive for a steroidal substance following the Cris Cyborg bout. Per MMA Mania, the finding triggered a six-month suspension. The sanction dates to the Oct. 14 report of the result.

Why it matters: The bout was billed as Cyborg's final MMA fight, raising stakes around the result. A failed test clouds Vieira's debut on that stage and forces a formal eligibility reset.

What to watch: Commission paperwork will set the eligibility date and appeal path. Vieira's next booking depends on that timeline.